H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 14/02 (2006.01) G02F 1/29 (2006.01) H04Q 11/00 (2006.01) G02B 6/34 (2006.01)
Patent
CA 2420972
An optical signal delay unit including a periodic wavelength demultiplexer having M (M is a natural number) input ports, including a signal input port, M output ports, including a signal output port, and periodic input/output characteristics for wavelengths between the M input ports and the M output ports, and M-1 optical paths to connect each of the M-1 output ports in which the signal output port is excluded from the M output ports of the periodic wavelength demultiplexer with any of the M-1 input ports in which the signal input port is excluded from the M input ports of the periodic wavelength demultiplexer.
Nishimura Kosuke
Usami Masashi
Kddi Corporation
Marks & Clerk
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