OPTICAL DROP DEVICE, OPTICAL DROP METHOD, AND OPTICAL ADD DEVICE

摘要

An optical drop device includes: a clock extractor configured to extract a clock signal from a multi-channel optical signal that includes a plurality of optical signals having different optical frequencies; a pulse generator configured to generate a pulse signal that is synchronized with the clock signal; an optical inverse Fourier transform unit configured to transform the multi-channel optical signal into a time division multiplexing optical signal by using an inverse Fourier transform; and an optical switch configured to drop an optical signal that exists in a time slot to which the pulse signal is applied, from the time division multiplexing optical signal.

主权项

1. An optical drop device, comprising:
a clock extractor configured to extract a clock signal from a multi-channel optical signal that includes a plurality of optical signals having different optical frequencies; a pulse generator configured to generate a pulse signal that is synchronized with the clock signal; an optical inverse Fourier transform unit configured to transform the multi-channel optical signal into a time division multiplexing optical signal by using an inverse Fourier transform; and an optical switch configured to drop an optical signal that exists in a time slot to which the pulse signal is applied, from the time division multiplexing optical signal.