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ZTE—Your Expert on WDM OpticalTransmissionXiao LiAs data traffic, especiallyIP-based data trafficenjoys exponentialgrowth, and the Internet is gainingworldwide popularity, morebandwidth is needed. WavelengthDivision Multiplexing (WDM)technology which can optimizecost-efficiency in the network,tackle fiber constraints and solvelong-haul transmission issues hasachieved a dominating position inthe global trunk line transmissionmarket. Furthermore, its two maintechnical development trends,dense WDM (DWDM) and coarseWDM (CWDM) are widelyused for metro area networkconstruction and have an upwardspiraling growth tendency becauseof its distinctive advantages.A full line of WDM productsZTE is one of the backbone vendorsin China who began research anddevelopment of optical communicationproducts as early as 1990s. Withresearch on WDM underway for overa decade now, ZTE holds two editorpositions in ITU standard activitiesand is one of the main contributorst o d o m e s t i c W D M s t a n d a r d s .Having served the needs of operatorsworldwide, ZTE knows what acustomer wants, needs and expects.Today, it has successfully launcheda full line of products covering thebackbone, convergence and accesslayers of MANs.The ZXWM M900 trunk lineDWDM systemThe ZXWM M900 is a largecapacityultra long-haul DWDMequipment which provides full-rateoptical access to services with speedsfrom OC-3c/STM-1 to OC-192c/STM-64 as well as enablesintegrated access to POS, ATM,GE and PDH services.● Large capacity and ultralong-haulDWDM equipment. Itcan multiplex up to 160 differentwavelengths in a single core fiber,and its total transmission capacitycan reach 1600Gbs.● The modular design enables acapacity scale design of 400Gbs,800Gbs and even 1600Gbs. Thesystem adopts flexible designs:MUX/DMUX+Interleaver+C/Lpassband OMU/ODU to ensuresmooth scalability and capacityexpansion.● Using advanced technologiessuch as FEC/EFEC, Ramana m p l i fi e r, R Z c o d i n g , a n ddispersion management. The 160wavelength×10Gb/s system is ableto fulfill ultra long-haul transmissionover 5000km (54×27dB) without aregenerator.● Accommodating a variety ofservices, including STM-N, GE, FE,Fiber Channel, Enterprise SystemsConnection (ESCON), DigitalVideo, and Fiber Connectivity(FCON); WDM offers powerfulaccess and convergence capabilitiesfor low-rate services and is ableZTE TECHNOLOGIES 15