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.
(This article is reproduced and processed from the network when writing)