Optical multiplexer/demultiplexer

Details Optical multiplexer/demultiplexer Optical multiplexer/demultiplexer

2006-10-31

2006-10-31

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Plural

C398S043000

Reexamination Certificate

active

07130503

ABSTRACT:
Light of wavelengths λ2and λ3(λ2<λ3) is propagated in a first core. The light emitted form the first core is divided at a filter. That is, the light of the wavelength λ2transmits through the filter and is made incident onto a third core while the light of the wavelength λ3is reflected from a filter and is made incident onto a second core. The second core has a sectional area which works in a single mode for the light of the wavelength λ3and works in a multiple mode for the light of the wavelength λ2. It is therefore possible to prevent noise or stray light in an optical multiplexer/demultiplexer.

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patent: 9-236725 (1997-09-01), None
patent: 2002-277674 (2002-09-01), None
Patent Abstracts of Japan; Publication No. 09-236725 dated Sep. 9, 1997 (2 pgs.).
Patent Abstracts of Japan; Publication No. 2002-277674 dated Sep. 25, 2002 (2 pgs.).

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