Optical multiplexing/demultiplexing device

Details Optical multiplexing/demultiplexing device Optical multiplexing/demultiplexing device

2008-11-06

2010-11-16

Le, Uyen-Chau N (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S027000

Reexamination Certificate

active

07835606

ABSTRACT:
In an optical multiplexing/demultiplexing device are arranged in parallel and disposed on a substrate. The optical multiplexing/demultiplexing device is disposed with three or more Mach-Zehnder interferometers between the first and second optical input/output ports. The optical multiplexing/demultiplexing device divides, by wavelength, multiplexed light comprising first light and second light whose wavelengths are different and which are input to one of the first optical input/output ports and outputs the multiplexed light from each of the second optical input/output ports. The absolute value of an optical path difference ΔL of each the Mach-Zehnder interferometers is constant. The optical multiplexing/demultiplexing device includes one or more each of a pair of two successive Mach-Zehnder interferometers where the sum of their optical path differences becomes +2ΔL or −2ΔL and a pair of two successive Mach-Zehnder interferometers where the sum of their optical path differences becomes 0.

REFERENCES:
patent: 7027686 (2006-04-01), Wang et al.
patent: A 8-163028 (1996-06-01), None

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