Isshin bidirectional optical transmitting and receiving apparatus in the wavelength division multiplexing optical communication system of

摘要

PROBLEM TO BE SOLVED: To provide an optical transmitting/receiving apparatus, with excellent economical efficiency capable of automatic wavelength setting in the same apparatus configuration between counter apparatuses in a wavelength multiplexed optical communication system.;SOLUTION: An optical transmitting/receiving apparatus 310 comprises an optical transmitter 312 corresponding to both optical signals of wavelengths λ₁ and λ₂, an optical receiver 314 corresponding to both the optical signals of the wavelengths λ₁ and λ₂, 2×2 optical switches 316 capable of switching a transmission/reception path between cross and through, and a wavelength multiplexer/demultiplexer 318 for multiplexing/demultiplexing the optical signals of the wavelengths λ₁ and λ₂. Said optical transmitting/receiving apparatus is capable of switching the wavelength of the optical transmitter 312 and the state of connecting the optical switches 316 using a control circuit 1000 in accordance with the wavelength of a received optical signal from a counter optical transmitting/receiving apparatus. The control circuit 1000 switches the transmission/reception wavelength at random time intervals, thereby reducing the repetition probability of a wavelength setting operation caused by simultaneously setting the same transmission/reception wavelength with the counter optical transmitting/receiving apparatus.;COPYRIGHT: (C)2007,JPO&INPIT