Optical repeater complying with redundant configuration

摘要

An optical repeater formed in an optical passive component passively relays an incoming multiplexed optical signal. The repeater has an optical decoder decoding the multiplexed optical signal, and an optical encoder encoding an optical signal from a termination unit connected to the repeater. The repeater further includes a first optical path switch outputting an incoming multiplexed optical signal to the optical decoder and outputting the optical signal delivered from the optical decoder, a second optical path switch outputting the optical signal coming from the first optical path switch to the termination unit, and a third optical path switch outputting the optical signal coming from the second optical path switch to the encoder and outputting the optical signal delivered from the encoder.

主权项

1. An optical repeater passively relaying a multiplexed optical signal, comprising:
a first and a second input/output port each receiving and outputting the multiplexed optical signal; an optical decoder decoding the multiplexed optical signal to a first optical signal; a first optical path switch outputting the multiplexed optical signal to said optical decoder and outputting the first optical signal entering from said optical decoder; a second optical path switch outputting the first optical signal received from said first optical path switch to a termination unit connected to said repeater and outputting a second optical signal delivered from the termination unit; an optical encoder encoding the second optical signal to a third optical signal; a third optical path switch outputting the second optical signal entering from said second optical path switch to said optical encoder and outputting the third optical signal; a fourth optical path switch outputting the multiplexed optical signal received on said first input/output port to said first optical path switch and outputting the third optical signal delivered from said third optical path switch to said first input/output port; and a fifth optical path switch outputting the multiplexed optical signal received on said second input/output port to said optical encoder and outputting the first optical signal delivered from said optical decoder to said second input/output port.