A efficient and inexpensive optical WDM network architecture with add and drop couplers. Add couplers and drop couplers connected to a network optical fiber with wavelength blocker units which filter out optical signals at selected wavelengths on the optical fiber. The wavelength blocker units are distributed among the add and drop couplers so that each segment of the optical fiber between pairs of neighboring wavelength blocker units has at least three add and drop couplers. More specifically, each segment has the following relationship: THRU+ADD+DROP+LOCAL.ltoreq.TOTAL where THRU is the number of channels passing through the segment; ADD is the number of channels added within the segment; DROP the number of channels dropped within the segment; LOCAL the number of channels confined within the segment; and TOTAL is the total capacity of the optical fiber.

 
Web www.patentalert.com

< Optical signal receiver, an associated photonic integrated circuit (RxPIC), and method improving performance

< Optical cross-connecting device

> Method and system for reducing intra-channel nonlinear effects in highly dispersed optical pulse transmission

> Method of monitoring and controlling the bit error rate (BER) in an optical communication network
~ 00292