What is LWDM wavelength division multiplexing technology?

LWDM( WDM) is a WDM( WDM technology, The frequency grid of 100 GHz and above specified in the central frequency reference ITU-T G.694.1, Path spacing 200 GHz~800 GHz, Between DWDM, Usually 100 GH and 50 GHz) and CWDM (coarse wavelength multiplexing, nm,20 About three THz or so), Using 1269 nm to 1332 nm wavelengths in the O-band (1260 nm) range, Wavelength intervals were 4 nm (1269.23,1273.54,1277.89,1282.26,1286.66,1291.1,1295.56,1300.05,1304.58,1309.14,1313.73,1318.35 nm). A pair of multiplexers / demultiplexers is required for LWDM systems, where the RRU/AAU side multiplexer / demultiplexer is R type (distal end) multiplexer / demultiplexer, BBU/DU side multiplexing / demultiplexer is B type (indoor) multiplexing / demultiplexer, R and B multiplexing / demultiplexer should be paired for application.

Technical characteristics and advantages. The transmission performance is good, the LWDM all work near zero dispersion point, the dispersion cost is small (<1 dB), the optical module adopts low cost DML low cost PIN; good expansibility, high LWDM spectrum efficiency, with 10 Gbit/s CWDM technology, single fiber supports five 5 forward demand models; high reliability, TEC( temperature control), optical module working in the best temperature range for a long time, lower failure rate and longer laser life; Maintenance redundancy is sufficient, LWDM performance is good, support 3 dB maintenance redundancy supports passive and semi-active deployment patterns, and the budget in the LWDM chain is sufficient to meet the additional insertion loss and the additional cost caused by the semi-active scheme.

Qingdao Guangying Technology Co., Ltd. can provide customers with a full range of WDM wavelength division multiplexing solutions. Qingdao Guangying focuses on providing customers with optical communication passive basic optical components design, research and development, manufacturing one-stop customized production, mainly optical fiber jumper, PLC/FBT splitter, WDM wavelength division multiplexer, optical switch and other product lines, products are widely used in FTTH, data center (Data center),5G network, telecommunications network and other scenarios.

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