MICROSENS. Modular CWDM/DWDM-Multiplexer System. Introduction

Transcription

1 Modular CWDM/DWDM-Multiplexer System MICROSENS Introduction Increasing bandwidth requirements resulted from rising amount of transferred data leads inevitably to the higher demand for the backbone capacities. Solution to this problem can be shifting of new glass fibers, yet it is connected with high costs, planning, time and formalities. A faster and more economical solution is the more efficient use of existing fiber lines through the active wavelength multiplexing called also WDM - Wavelength Division Multiplexing. With the WDM technology different wavelengths are used for the parallel transfer of several signals. The WDM systems of MICROSENS permit immediate and above all economical capacity development of existing fiber lines for telecommunications providers, ISPs, operators of metro networks as well as for enterprises with large networks. The users can optimally use their dark fiber connections with these systems. With the application of the MICROSENS WDM technology the utilizable capacities can be adapted flexibly and fast to the requirements of backbone connections. By implementing the cost-efficient CWDM technology MICROSENS sets in its modular WDM systems an optimal scalability together with lower initial costs. With this technology MICROSENS offers the possibility to cover data transmission rate of up to 40 Gbit/s on standard optical fibers. The main application for this multiplexing system is CWDM technology, however DWDM can also be used, especially for applications that require more optical channels capacity (32, 48 etc.). This datasheet describes mainly CWDM functionality, the additional information about DWDM options and parameters of this system can be found in further documentation of appropriate DWDM modules (MUXs/DeMUXs/SFPs)

2 Modular CWDM/DWDM-Multiplexer Page 2/26 WDM-Technology The fiber offers an additional advantage, which enables a further, substantial capacity increase apart from the well-known advantages of the high bandwidth in long transmission connections. Since light of different wavelengths does not influence itself mutually, the transfer capacity can be multiplied by the simultaneous transfer of data with different wavelengths in an optical fiber. This technology is called wavelength multiplex or WDM (Wavelength Division Multiplexing). The simultaneous transfer can take place both in one transmission direction, and in addition, in opposite directions. The optical coupler of the wavelength multiplexers bundles the different light wavelengths and transfers the entire light stream, which contains all discrete wavelengths, over one fiber-optic cable to the receiving place, where it is separated by means of filter techniques into the individual channels. The number of channels available on a glass fiber at the same time is limited theoretically only by the technical feasibility. If a very small wavelength distance is selected, then a high channel number in only one optical window can be accommodated. DWDM systems (Dense WDM) based on this technology are used particularly in the long-distance traffic area. Critical technical factor of a DWDM system is the stability of the optical components, primarily of the transmission lasers. In order to achieve a wavelength stability within the nanometer area, very large electrical and thermal stabilization are necessary, which make the components expensive. Latest technology within the wavelength multiplex area is the CWDM (Coarse WDM). With these systems the channel spacing of the individual wavelengths is multiple times larger in the comparison to the DWDM technology (approx. 20 nm). Thus the requirements towards laser technology are reduced, which affects drastically the entire system costs.

3 Modular CWDM/DWDM-Multiplexer Page 3/26 Fig 1. CWDM and DWDM wavelengths according to ITU G & G The optical windows with wavelengths of 850 nm, 1300 nm and 1550 nm can be used for the transfer (see the following diagram). Fig. 2. Transmission parameters of the glass fiber For xwdm transmission the third optical window with a wavelength of 1550 nm is used, in which the different colours light signals are transferred. With the CWDM technology the light stream between 1470 nm and 1610 nm is divided on up to 8 wavelengths, whereby on each wavelength 2.5 Gbit/s can be transferred. Optionally it is possible to use second optical window with the light stream between 1470 nm and 1610 nm for transmission of inband management or another 8 CWDM channels. Please note however that maximum distance is significantly lower if second optical window is used for CWDM transmission.

4 Modular CWDM/DWDM-Multiplexer Page 4/26 Compared with DWDM systems the initial costs of the newest CWDM technology are substantially more favourable. Thus new target groups start to use this technology. Apart from telecommunications providers also private customers, maintaining larger network or several locations in one city, successfully deploy these cost-efficient solutions. Features With the use of optical multiplexer on the basis of CWDM technology a fast and simple reduction (8:1) of required optical connections is possible. The modular design makes an efficient and economical extension of the system possible. The optional SNMP management function enables a central controlling by administrator. The modular CWDM system can transfer up to eight independent high-speed services over a single mode fiber. The individual channels are transparent for the transferred data, they can transmit various service protocols from 100 Mbit/s up to max. 2.5 Gbit/s e.g. Fast Ethernet, ESCON, ATM OC-12/OC-48, 1G and 2G Fibre Channel, SDH STM-1/4/16 and Gigabit Ethernet. significant cost saving by using Coarse WDM technology up to 16 independent services on one glass fiber connection optimal expandability due to modular transceiver cards and pluggable transceivers. The local connections are realized by GBIC/SFP plug-in transceivers. optimal investment utilization. Only actually used ports are installed. line interface duplex (2 fibers) or simplex (1 fiber) optional Line-Protection. The output channel is transmitted parallel over two independent fiber lines thus the transmission is secured in case of fiber damage. service friendly due to minimum necessary spare part stock optical budget of min. 24 db. Distances of min. 80 km are possible to cover in addition to the simple point-to-point connection the system supports also building of complex linear add/drop and ring structures compact form, 19 chassis 4 HU with 28 module slots the multiplexer can be monitored by an integrated management module through SNMP (Simple Network Management Protocol) and web based management. Easy integration in SNMP management platforms is guaranteed.

5 Modular CWDM/DWDM-Multiplexer Page 5/26 Applications The main advantage of the multiplexer lies in the increasement of the capacity of existing glass fiber infrastructure, which is called "multiplex operation" e.g. by the bundling of several services on a transmission fiber. A further advantage is the possibility of coupling of heterogeneous networks, with the parallel transmission of different services e.g. Gigabit Ethernet, Fibre Channel and ATM. Fig. 3: Coupling of heterogeneous networks Thanks to its modular design MICROSENS CWDM multiplexer is high-grade scalable and can be economically adapted to the requirements of the network. Beside linear add/drop structures it is possible to build ring structures with this system.

6 Modular CWDM/DWDM-Multiplexer Page 6/26 Fig. 4: Parallel transmission of telecommunication services (SDH) and data Active Wavelength Conversion The transfer of the single channels takes place by means of the wavelength multiplexing equipment. Thereby a unique wavelength is assigned to each channel of the multiplexer system. Channels on the line side are operating in third optical window with a channel spacing of 20 nm each. CWDM 20 nm spacing ITU G optical power nm wavelength Fig. 5: CWDM channel spacing The modular system concept is based on the use of special CWDM lasers, which are laid out as GBIC/SFP transceiver modules. Thereby these cost-intensive system components can be used only in the actually needed quantity. Besides, service and maintenance are substantially simplified and the costs of spare part stock are minimized.

7 Modular CWDM/DWDM-Multiplexer Page 7/26 Fig. 6: Local/CWDM Laser - SFP Transceiver Description The actual SFP transceivers from MICROSENS offer an optical transmission over multimode or single mode fiber. Depending on the model the transceiver can cover distances up to 120 km. The SFP (Small Form Factor Pluggable) is based on the same principle as the GBIC. The main difference is the size of the transceiver with only half of the width (mechanical dimensions) due to the use of the LC connector. The optical transceiver from MICROSENS comply to the SFP specifications Revision Additional they are compliant to the Gigabit Ethernet specifications according IEEE Std , the Fibre Channel specifications FC-PH, PH2, PH3, FC-PI 10.0 and all common ATM (OC-12, OC-48) and Sonet (SDH STM-4, SDH STM-16) standards. The transceivers are available with different wavelengths. For multimode applications such as Gigabit Ethernet, Fibre Channel or Double Rate Fibre Channel VCSEL lasers with a wavelength of 850 nm are used. This allows to realise distances up to 550 m using a 50/125 µm multimode fiber. For single mode applications there are FP and DFB lasers with the wavelengths of 1310 and 1550 nm available. Depending on the model it is possible to cover distances from 10 km up to 120 km. The transceivers offer the highest flexibility and can be installed during operation (hot swap).

8 Modular CWDM/DWDM-Multiplexer Page 8/26 Technical Specifications of SFPs modules* Type Fiber type SFP (Small Form Factor Pluggable) Transceiver for data transmission up to Gigabit speed Multimode 62,5/125 or 50/125 µm, duplex, Single Mode 9/125 µm duplex, LC-connector Data Rates 622 Mbps to 1.25 Gbps (optional Gbps) Multimode Wavelength: 850 nm MM VCSEL min. optical power: -10 dbm min. opt. sensitivity: -20 dbm min. distance: 550 m (50 µm), 275 m (62,5 µm) Single Mode Wavelength: 1310 nm SM FP Laser min. optical power: -8 dbm -7 dbm 10 km / 25 km min. opt. sensitivity: -22 dbm -24 dbm min. distance: 10 km 25 km Single Mode Wavelength: 1550 nm SM DFB Laser min. optical power: -5 dbm 0 dbm 0 dbm 50 km / 80 km / 120 km min. opt. sensitivity: -24 dbm -24 dbm -32 dbm min. distance: 50 km 80 km 120 km Data Rates up to 2,488 Gbps Multimode Wavelength: 850 nm MM VCSEL min. optical power: -9 dbm min. opt. sensitivity: -18 dbm min. distance: 550 m (50 µm), 275 m (62,5 µm) Single Mode Wavelength: 1310 nm SM FP Laser min. optical power: -10 dbm -5 dbm 2 km / 15 km min. opt. sensitivity: -20 dbm -20 dbm min. distance: 10 km 25 km Single Mode Wavelength: 1550 nm SM DFB Laser min. optical power: -5 dbm 0 dbm 15 km / 80 km min. opt. sensitivity: -20 dbm -29 dbm min. distance: 50 km 80 km Data Rates CWDM up to 1,25 Gbps Single Mode Wavelength: 1470 nm nm SM CWDM Laser min. optical power: -0 dbm 0 dbm 50 km / 80 km min. opt. sensitivity: -23 dbm -29 dbm min. distance: 50 km 80 km Data Rates CWDM up to 2,67 Gbps Single Mode Wavelength: 1470 nm nm SM CWDM Laser min. optical power: -0 dbm 0 dbm 50 km / 80 km min. opt. sensitivity: -20 dbm -29 dbm min. distance: 50 km 80 km Operating temperature 0 C to 60 C Standards CDRH and IEC class 1 eye safety Supply Voltage 3,3 V * only sample SFP modules are given. For additional options and parameters please refer to additionalsfp datasheet.

9 Modular CWDM/DWDM-Multiplexer Page 9/26 Diagnostic Function (optional) Optional the transceivers are available with Diagnostic function (Extension of article number with D, e.g. MS100200D), to monitor detailed all operating information. This offers to read information such as optical transmit power, receive power, the optical budget, the resulting possible distances and the real used data rate via the management system. This feature is particular useful in combination with the MICROSENS xwdm systems, because it increases the functionality significant. CWDM transceiver modules* for applications with data rates from 0.1 up to max Gbit/s: Pos. Art.-No. Wavelength Color Description 1 MS100214D nm Grey SFP 1.25Gb, 1470nm, Single Mode, 80km 2 MS100214D nm Violet SFP 1.25Gb, 1490nm, Single Mode, 80km 3 MS100214D nm Blue SFP 1.25Gb, 1510nm, Single Mode, 80km 4 MS100214D nm Green SFP 1.25Gb, 1530nm, Single Mode, 80km 5 MS100214D nm Yellow SFP 1.25Gb, 1550nm, Single Mode, 80km 6 MS100214D nm Orange SFP 1.25Gb, 1570nm, Single Mode, 80km 7 MS100214D nm Red SFP 1.25Gb, 1590nm, Single Mode, 80km 8 MS100214D nm Brown SFP 1.25Gb, 1610nm, Single Mode, 80km CWDM transceiver modules* for applications with data rates from 0.1 up to max Gbit/s: Pos. Art.-No. Wavelength Color Description 1 MS100272D nm Grey SFP 2.5Gb, 1470nm, Single Mode, 80km 2 MS100272D nm Violet SFP 2.5Gb, 1490nm, Single Mode, 80km 3 MS100272D nm Blue SFP 2.5Gb, 1510nm, Single Mode, 80km 4 MS100272D nm Green SFP 2.5Gb, 1530nm, Single Mode, 80km 5 MS100272D nm Yellow SFP 2.5Gb, 1550nm, Single Mode, 80km 6 MS100272D nm Orange SFP 2.5Gb, 1570nm, Single Mode, 80km 7 MS100272D nm Red SFP 2.5Gb, 1590nm, Single Mode, 80km 8 MS100272D nm Brown SFP 2.5Gb, 1610nm, Single Mode, 80km * additionally wavelengths from second optical window as well as other options including DWDM lasers, different optical budget options, different max. throuput are also available

10 Modular CWDM/DWDM-Multiplexer Page 10/26 4 Channel Optical Crossbar Transponder with SFP-Ports 4 Channel Optical Crossbar Transponder to connect up to four fiber segments with optional complete signal regeneration. Due to the complete signal regeneration (3R) of the transponder, the signal distortion caused by the transmission over long distances is compensated. The transponder can operate in two modes: Transparent transponding: the input signal is not reclocked, only colour of wavelength is changed 3R regeneration: the input signal is completely refreshed and clock is rebuilt The process of complete signal regeneration is usually called '3R' (reamplification, reshaping, retiming) and regenerates the amplitude, the curvature and the timing of the transmitted signal. The deployment of transponders with retiming functionality enables the implementation of far longer transmission distances, and allows cascading several longdistance transponders with sub-segment lengths of up to 120 kilometres (75 miles) each. Optical Crossbar Transponder has got four installed modular SFP ports instead of permanent optical modules. The use of pluggable optical transceivers (SFPs) offers the highest flexibility for the implementation of different transmission distances. Beside the transparent transponding and retiming function the module can be configured to following operation modes using the integrated crossbar: Redundant configuration (protection of fiber links) Channel protection (protection of active lasers or complete module) Crossbar (all SFP ports freely interconnect able) Broadcast (1:n broadcast application) Using SFPs with digital diagnostics interface it is possible to monitor the status information of the SFP via the chassis management. It is possible to read information such as wavelength, optical transmit and receive power and other information. The transponder is laid out in form of a plug-in module card, which is installed into MICROSENS modular converter system. Beside the standalone chassis in single and double version, there is a special 19"-Chassis for mounting up to 12 modules. In combination with the MICROSENS SNMP management module (MS B) the converter can be supervised by SNMP/Web-based management. A further feature places an alarm contact (non-potential), which can be used for the connection to external alarm system.

11 Modular CWDM/DWDM-Multiplexer Page 11/26 Connectors There are the following connections on the front side of the module: PWR ALARM Tx 1 Rx Tx 2 Rx Tx 3 Rx Tx 4 Rx ON EN LK ON EN LK ON EN LK ON EN LK SFP Port 1 SFP Port 1 SFP Port 1 SFP Port 1 Optical Crossbar Alarm Alarm Contact - Configuration Due to a free programmable internal clock the converter does the signal regeneration for any protocol and data rate, e.g. ATM OC-3, SONET/SDH STM-1 (155 Mbps), ATM OC-12/ SONET/SDH STM-4 (622 Mbps), Gigabit Ethernet (1.25 Gbps), ATM OC-48/ SONET/SDH STM-16 (2488 Mbps), and others within the range of 100 Mbps up to 2.7 Gbps. The signal amplitude (1R), the signal form (2R) and the signal timing (3R) are regenerated. The selection of transmission rate is made via the management of the additional management agent module (MS B). Link Through Via the management software it is possible to activate or deactivate the Link Through function. The Twin Wide Range Retimer supports Link Through (LT) function in FX/FX retimer application. The link status on one port is propagated to the other port to notice the remote nodes. If one of the fiber port is unplugged, this converter stops transmission on the other fiber port. A Remote site Link error B Management alarm Location A Converter with Link Through Location B with network management

12 Modular CWDM/DWDM-Multiplexer Page 12/26 LED displays The status of the converter is indicated over 15 LEDS on the front side. Two general LEDs for the whole module: PWR ALARM LED Name Description PWR Power Module is ready ALARM Alarm Alarm is on Three LEDs for each SFP port: ON EN LK LED Name Description ON Laser On Transmit Laser on EN Enable Port able to transmit data In protection mode: On: active protection port Off: standby protection port LK Link Flashing: receiving optical signal On: Retimer lock Alarm contact The alarm contact enables the monitoring of the converter condition over an attached external signal generator. In case of a failure of the power supply of the module the alarm contact switches into the alarm condition. There are two different options how the alarm is provided at the relay contact, normally open or normally closed. The pinout of the alarm contact is shown in the following figure and table: C NC NO Alarm PIN Name Description C Common Common contact for NC and NO. NC Normally Closed Closed to common in normal operation, open in case of alarm. NO Normally Open Open to common in normal operation, closed in case of alarm. When connecting external devices the maximum contact stress of the connection must be considered. Never connect 230 V AC to this contact!

13 Modular CWDM/DWDM-Multiplexer Page 13/26 Technical Specifications of Optical Crossbar Transponder Type Connectors Data rate 4 channel Optical Transponder module to connect up to four fiber segments with integrated crossbar, protection and broadcast feature 4x SFP ports 100 Mbps up to 2.7 Gbps (free configurable internal clock) LED displays PWR Standby ALARM Fiber link error or power down ON Laser on EN Port enabled LK Link / clock locked Alarm contact Power supply potential free, max. 60 V DC, max. 0,5 A 12 V DC / max. 400 ma via Backplane Operating temperature 0 C to 55 C Storage temperature -20 C to 80 C Relative humidity Dimensions 5% to 80% non condensing 3 HE x 6 TE (128 x 31 mm)

14 Modular CWDM/DWDM-Multiplexer Page 14/26 Passive multiplexing (MUX) / demultiplexing (DeMUX) Due to the flexible design it is possible to realise different network topologies, depending on the application: Point-to-Point-Topology In this configuration the data channels are transmitted in parallel between two locations. In the end points standard MUX/DeMUX units are used, which are combining and splitting the optical wavelengths. It is possible to reach a minimum distance of 80 km. For the maximum possible distance the attenuation of the fiber is the limiting factor. Fig. 7: Point-to-Point-Topology The passive multiplexer (MUX) and demultiplexer (DeMUX) are designed as a modular card. In normal configuration a 8 channel multiplexer and a 8 channel demultiplexer are used. In case that the configuration is changed, these cards can be replaced by add/drop modules, due to the modular design (see next chapter). CWDM Channel λ1 1 CWDM Channel λ2 2 CWDM Channel λ3 3 CWDM Channel λ4 CWDM Channel λ5 4 Mux/ Demux 5 8 ch. 9 Line Interface λ1, λ2,..,λ8 CWDM Channel λ6 6 CWDM Channel λ7 7 CWDM Channel λ8 8 Fig. 8: CWDM MUX/DeMUX Combining the wavelengths

15 Modular CWDM/DWDM-Multiplexer Page 15/26 Linear-Add-Drop-Topology This is an extended point-to-point topology, where several nodes can be added between the end nodes. At these additional nodes it is possible to drop (take out) or to add (put in) single channels out of or into the fiber (see fig. 9). With a correct design it is possible to route the channels between any two nodes of the network. In the end nodes there are standard MUX/DeMUX units used. Designing the network it has to be considered that each add/drop multiplexer has its own attenuation, so that the total possible distance is reduced. Fig.. 9: Linear-Add-Drop-Technology The passive add/drop modules are available in different versions, which are having a different number of add/drop channels. Standard versions are the one, two and four channel add/drop modules. Because of the modular design it is possible to reconfigure existing multiplexer end system to add/drop units.

16 Modular CWDM/DWDM-Multiplexer Page 16/26 Ring-Topology Especially in the telecom area the use of ring structured networks is preferred, because this offers the highest security combined with a minimum use of fiber (see fig. 11). If the ring is interrupted at one location, the data traffic can be kept upright if the network is designed in this way. To build the ring structure it is necessary to use add/drop multiplexer in all nodes. With the correct design it possible to transmit the channels between any two nodes. Fig. 10: Ring-Topology Fig. 11: Example of wavelength add/drop

17 Modular CWDM/DWDM-Multiplexer Page 17/26 Passive xwdm MUX/DeMUX Modules* MICROSENS is expanding its product portfolio of optical Metro solutions by introducing new passive multiplexers for multiplying transmission capacities of fiber optical connections. By using passive multiplexers, several optical channels of different wavelengths can be combined, which will allow multiple services to the transmitted together via fiber without interference. What makes this possible is the fact that different light colours (wavelengths) do not affect each other. These components will make realizing CWDM and DWDM applications easy. Passive construction of the module permits its use for various applications including: - Fast Ethernet - ESCON, - STM-1/OC-3, STM-4/OC-12, STM-16/OC-48, STM-64/OC Gigabit Ethernet, - Fibre Channel - Double Rate Fibre Channel, - 10 Gigabit Ethernet For transmission, light colours are multiplexed onto an fiber using a wavelength-specific filter (multiplexing). At the other (receiving) end of the line, the wavelengths are divided again, or rather, demultiplexed. Hence, any transmission line consists of a multiplexer and a demultiplexer. For bi-directional transmission, both start and end points will then require the appropriate multiplexers and demultiplexers. Since we are dealing with true passive multiplexing, the individual optical signals must already be available in their respective wavelengths. The multiplexers are then selected according to the different wavelengths (window, number of channels, and wavelength difference). The design of these components emphasizes ease of installation and start-up of operations, as well as consistent modularity for optimal adaptability to given communication requirements. The multiplexer/demultiplexer rack modules are part of a wide product range of functional modules for installation in modular rack systems from MICROSENS. In addition to desktop housings, users can select a 19 chassis with up to 12 slots. When using multi-slot chassis, the converter may be combined with any other modules from the Enterprise Access family. In addition, the MICROSENS product portfolio offers active converters for optical or electrical/optical adaptation of data channels to the appropriate wavelengths and required ranges. These converters are also based on the modular system of the Enterprise Access family, allowing band-widths of up to 2.5 Gbit/s per channel. Depending on combination and wavelengths, ranges of up to 80 km can be realized. Using WDM as transmission technology, network operators can build an infrastructure that may be expanded depending on need. In addition, the capacities in all sub-areas of the network are expandable. This represents an advantage no other technology can provide. Using passive multiplexers is of interest for cable network operators, too. This technology will allow providing additional services such as combining bi-directional data services with unidirectional TV transmission without any problem, while using the existing infrastructure. * only sample MUX/DeMUX is described. For additional options and parameters please refer to additional MUX/DeMUX datasheets.

18 Modular CWDM/DWDM-Multiplexer Page 18/26 Device CWDM Channel λ CWDM Channel λ CWDM Channel λ CWDM Channel λ CWDM Channel λ CWDM Channel λ CWDM Channel λ CWDM Channel λ Line Passive CWDM Module MICROSENS Line Interface λ1, λ2,..,λ8 Function CWDM Channel λ1 1 CWDM Channel λ2 2 CWDM Channel λ3 3 CWDM Channel λ4 CWDM Channel λ5 4 Mux/ Demux 5 8 ch. 9 Line Interface λ1, λ2,..,λ8 CWDM Channel λ6 6 CWDM Channel λ7 7 CWDM Channel λ8 8 Connection The use of the multiplexer and demultiplexer is always done in a pair. From CWDM-GBIC Receive Transmit Mux DeMux MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS MICROSENS Notes Duplex fiber Line side Output (TX) The above diagrams show only basic point-to-point applications units. Further modules enable building add/drop configurations and adding service channels to the transmissions. Input (RX)

19 Modular CWDM/DWDM-Multiplexer Page 19/26 Technical Specifications of passive MUX/DeMUX modules Fiber type Single Mode 9/125 µm SC/APC-connector (Line Interface) SC/PC-connector (Channel Interface) CWDM Channels According to ITU G.694.2, spacing 20 nm: 1290 nm, 1310 nm, 1330 nm, 1350 nm, 1370 nm, 1390 nm, 1410 nm, 1430 nm 1470 nm, 1490 nm, 1510 nm, 1530 nm, 1550 nm, 1570 nm, 1590 nm, 1610 nm Channel width min. +/- 6,5 nm Channel Isolation min. 30 db (adjacent) min. 45 db (non adjacent) Insertion Loss max. 2,5 db per channel Return Loss min. 40 db Flatness max. 0,5 db Power supply 12 V DC / max. 100 ma via system backplane (for management only) Operating temperature 0 C to 55 C Storage temperature -20 C to 80 C rel. Humidity 5% to 80% non condensing Dimensions 31 x 128 x 170 mm (w x h x d) Notes The passive Mux/DeMUX modules are belonging to a big range of 19 system modules and are available in many different versions/options suitable for various applications. The basic types include point-to-point and add/drop modules (with variable number of add/drop channels). A power supply is not necessary for the passive modules.

20 Modular CWDM/DWDM-Multiplexer Page 20/26 Passive Line Interface Module (Optional) The standard xwdm systems are using MUX/DeMUX modules. The outputs of these modules are operating as the line interface. Using one 8 channel MUX (transmit direction) and one 8 channel DeMUX (receive direction), the system is offering one duplex line interface. One fiber (simplex) is used for the transmit direction and the other one for the receive direction. Simplex Line Interface The use of a special coupler offers the possibility to use one fiber (simplex) for both, transmit and receive direction without any interference. In this case the same wavelength is used for the transmit and the receive direction. By using existing duplex fiber connection it is possible to transmit up to 16 channels on one fiber pair. These direction dependent couplers are reducing the usable optical budget about db per side. Standard Simplex DeMux MUX Line Protection Module Fig. 12: Simplex Interface At this type of protection between two locations, the data is transmitted in parallel over two different fiber connections. To have a useful protection the two fiber connections should have a different route. On the receive side an optical switch is doing the selection of the active line. If the active line is interrupted the switch is switching automatically to the second backup line. The switching time is under the 50 ms switching time which is required in SDH networks. This type of protection secures interruptions of the fiber connections between the locations. A protection against failures of the active parts of the device is not given by this module. This option can be used only for the point to point connection. A combination of the line protection with the simplex interface is not recommended. Reflections on the fiber can cause malfunction on the line protection module. Protected West Protected East Fig. 13: Line Protection with optical switch

21 Modular CWDM/DWDM-Multiplexer Page 21/26 Management The connection with the Ethernet network is made by the RJ-45 socket of the module, which supports 10/100Base-TX connections. The Ethernet port allows a connection of an end device or a switch/hub. The connection to an end device has to be done with acrossed patch cable. The automatic rate adjustment with the receiving station is made by the integrated Autonegotiation function. The access is done using the TCP/IP protocol. The following applications are supported: SNMP SNMP is the standardized protocol for the integration of the equipment management in standard management platforms e.g. HP open View or IBM Tivoli. The access to the internal data structures of the equipment is made by the Management Information Base (MIB-II). In order to make an access over SNMP to the components data possible, the integration of the data structure of the MIB into the network management is necessary. The structure of the MICROSENS MIB can be loaded by HTTP download from MICROSENS Web Manager. The MIB file is in the ASCII format. http (Webserver) The integrated management agent web server based on HTTP protocol enables access by a standard Internet Browser (e.g. Microsoft Internet Explorer or Netscape Navigator). Device status is visualised graphically (GUI). Terminal + TELNET All equipment functions can be configured and queried also via a local serial port. This terminal is also available over the network port by means of Telnet protocol. FTP The integrated software of the agent is put down in a Flash ROM. It can be updated by FTP download over the network at any time. During the update no impairment of the data traffic of CWDM data channels takes place.

22 Modular CWDM/DWDM-Multiplexer Page 22/26 Configuration Examples Due to the modular design and the chassis based concept there are many different configurations possible. The following figures are showing some examples. MUX/DeMUX Active Interface modules with Retiming and GBIC-Slots Management Fig. 14: Standard configuration as 8 channel xwdm-system MUX/DeMUX Active Interface modules with Retiming and GBIC-Slots MUX/DeMUX Management Fig. 15: Configuration as 8 channel CWDM Retimer System Fig. 16: Configuration as 1 channel Add/Drop System with 3R-Retimer based on the 1 HU chassis

23 Modular CWDM/DWDM-Multiplexer Page 23/26 Technical data Type Optical multiplexer for parallel, transparent transmission of 8 channels over one fiber optic line Fiber type Bandwidth Data rate Local connector Multimode 62.5/125 or 50/125 µm, duplex, Single Mode 9/125 µm duplex, LC-connector 40 GBit/s (16x 2.5 Gbit/s per channel in each direction) max. 2.5 Gbit/s (STM-16) per channel CWDM Port wavelength: nm SM 80 km min. opt. budget: 24 db min. distance: 80 km (dependant on fiber type) Alarm contact Power supply Floating, max. 60 V DC, max. 0,5 A V AC, Hz, max. 90 W V DC, Hz Operating temperature 0 C to 55 C Storage temperature -20 C to 80 C Rel. humidity 5% to 80% non condensing Dimensions 450 x 400 x 174 mm (w x d x h)

24 Modular CWDM/DWDM-Multiplexer Page 24/26 Safety Notes Handling (installation of the system) CAUTION: Electrostatic discharges can destroy electronic components. Precautions against damage: An antistatic wristband connected to the multiplexer housing should be used during installation. Discharge any static electricity from your body and the system by touching the grounding terminal of the system housing for several seconds. Do not remove the system from packaging until immediately before installation. Do not touch any conductive parts of the system (components, soldering points, wires) and hold it by the mounting areas only. Electrical Safety DANGER! Conductive components of power and telecommunications networks can carry dangerously high voltage. To avoid electric shock: Do not carry out installation or maintenance work during lightning storms. All mains connections must be carried out via earthed mains sockets. All electric installations must be carried out in accordance with local regulations. Eye Safety DANGER! Optical components may radiate laser light. WARNING: Infrared radiation used for fiber optic data transmission, although invisible, may cause permanent damage to the human eye. To avoid damage to the eyes: Never look straight into the output of fiber optic components danger of blinding! Cover all unused optical connectors with protection caps. Establish the optical transmission link only after completing all connections. The active laser components used with this product comply with the specifications of Laser Class 1.

25 Modular CWDM/DWDM-Multiplexer Page 25/26 Order designation (sample modules only) Art.-Nr. Description Connectors MS416001M MS416010M MS416004M MS416005M MS416040M MS416453MR MS (D) MS (D) 19 Chassis 3 HU, 14 module slots, incl. Backplane 19 Chassis 3 HU, 28 module slots, incl. Backplane AC/DC VAC power supply (also redundant) DC 48 V power supply (also redundant) Fan Module for Modular System 4 Channel Optical Crossbar Transponder + Wide Range Retimer Module up to OC-48/STM-16, Active Local Interface (SFP), 850nm Multimode, max Gbit/s Active Local Interface (SFP), 1300nm Single Mode, min. 10 km, max GBit/s Backplane Backplane 4x SFP Slot 1x alarm contact 2 x LC 2 x LC MS (D) Active Local Interface (SFP), 850nm, max. 2,125 GBit/s, GBE, 1x/2x Fibre Channel" 2 x LC MS (D) Active Local Interface (SFP), 1300nm short reach, max. 2.5 GBit/s 2 x LC MS100213D-ww CWDM Line Interface max Gbps for STM- 1/OC-3, STM-4/OC-12, Gigabit Ethernet, 1x Fibre Channel, Single Mode CWDM Laser, LC connector, min. 23dB Budget MS100214D-ww CWDM Line Interface max Gbps for STM- 1/OC-3, STM-4/OC-12, Gigabit Ethernet, 1x Fibre Channel, Single Mode CWDM Laser, LC connector, min. 29dB Budget MS100270D-ww CWDM Line Interface max. 2.7 Gbps for STM- 1/OC-3, STM-4/OC-12, STM-16/OC-48, ESCON, Gigabit Ethernet, 1x/2x Fibre Channel, Single Mode CWDM Laser, LC connector, min. 20dB Budget MS100272D-ww CWDM Line Interface max. 2.7 Gbps for STM- 1/OC-3, STM-4/OC-12, STM-16/OC-48, ESCON, Gigabit Ethernet, 1x/2x Fibre Channel, Single Mode CWDM Laser, LC connector, min. 29dB Budget 2 x LC 2 x LC 2 x LC 2 x LC

26 Modular CWDM/DWDM-Multiplexer Page 26/26 MS100320D-nn MS100321D-nn DWDM Multirate Line Interface 100 Mbps..2.7 Gbps for Fast Ethernet, STM-1/OC-3, STM- 4/OC-12, STM-16/OC-48, ESCON, Gigabit Ethernet, 1x/2x Fibre Channel, Single Mode DWDM Laser, nn: ITU C-Band Channel 17-60, LC connector, min. 80km DWDM Multirate Line Interface 100 Mbps..2.7 Gbps for Fast Ethernet, STM-1/OC-3, STM- 4/OC-12, STM-16/OC-48, ESCON, Gigabit Ethernet, 1x/2x Fibre Channel, Single Mode DWDM Laser, nn: nn: ITU C-Band Channel 17-60, LC connector, min. 120km 2 x LC 2 x LC MS418360M Line Interface module simplex 3x SC MS419829M Line protection module (West/East) 4x SC MS416410M-nn 8 channel CWDM MUX and/or DeMUX module (for an 8 channel MUX/DeMUX system there are two modules necessary) MS416412M-nn 8 channel CWDM MUX and/or DeMUX module with express channel 1310 nm (for an 8 channel MUX/DeMUX system there are two modules necessary) MS416405M-nn 2 channel CWDM Add/Drop MUX and/or DeMUX (for an 8 channel MUX/DeMUX system there are two modules necessary) MS416408Mnnnn MS414020M-c- 22 MS414021M-c channel CWDM Add/Drop MUX and/or DeMUX (for an 8 channel MUX/DeMUX system there are two modules necessary) 8 Channel MUX DWDM, Local: 8x SC/PC simplex, Line: 1x SC/APC simplex 8 Channel DeMUX DWDM, Local: 8x SC/PC simplex, Line: 1x SC/APC simplex Local: 8x SC/PC simplex Line:1x SC/APC simplex Local: 9x SC/PC simplex Line:1x SC/APC simplex Local: 8x SC/PC simplex Line:2x SC/APC simplex Local: 8x SC/PC simplex Line:2x SC/APC simplex Local: 9x SC/PC simplex Line:1x SC/APC simplex Local: 9x SC/PC simplex Line:1x SC/APC simplex MS416361M- 3Mxx Multifunctional Twin Bridge for inband management 2x 10/100Base-TX, 2x 100Base- FX, Port1: Multimode 1300nm SC, Port2: xwdm 2x RJ45 (10/100TX) 2x SC duplex MS B SNMP Management Module, 1xRJ45 10/100Base-TX, 1xSUBD9 1x RJ45 (10/100TX) 1x SUB-D 9 (RS-232) * ww wavelength: nm, nm, nm, nm, nm, nm, nm, nm nm, nm, nm, nm, nm, nm, nm, nm * n channel number: nm, nm, nm, nm, nm, nm, nm, nm MICROSENS reserves the right to make any changes without further notice to any product to improve reliability, function or design. MICROSENS does not assume any liability arising out of the application or use of any product. 0807/tn