Waveguide-type optical multiplexer/demultiplexer

Details Waveguide-type optical multiplexer/demultiplexer Waveguide-type optical multiplexer/demultiplexer

2005-09-20

2005-09-20

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Plural

C385S015000, C385S027000, C385S031000, C385S039000, C385S041000, C385S042000, C398S079000, C398S082000

Reexamination Certificate

active

06947631

ABSTRACT:
A waveguide-type optical multiplexer/demultiplexer with low crosstalk characteristics and reduced wavelength dispersion is provided. A waveguide-type optical multiplexer/demultiplexer comprising, first, second and third optical multiplexer/demultiplexer circuits connected in multistage, each multiplexer/demultiplexer circuit has four input-output ports, third input-output port of first optical multiplexer/demultiplexer circuit is connected to third input-output port of second optical multiplexer/demultiplexer circuit, and fourth input-output port of first optical multiplexer/demultiplexer circuit is connected to fourth input-output port of third optical multiplexer/demultiplexer circuit, when wavelength division multiplex signals having wavelength λ1, λ2, λ3, λ4, λ5, λ6. . . are input through first input-output port of first optical multiplexer/demultiplexer circuit, multiplex signals of odd wavelength λ1, λ3, λ5. . . are output from first input-output port of second optical multiplexer/demultiplexer circuit, and multiplex signals of even wavelength λ2, λ4, λ6. . . are output from first input-output port of third optical multiplexer/demultiplexer circuit.

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