Wavelength division element and optical module

Details Wavelength division element and optical module Wavelength division element and optical module

2007-05-08

2007-05-08

Font, Frank G. (Department: 2883)

Optical communications

Multiplex

Wavelength division or frequency division

C398S086000, C398S087000, C398S088000, C398S139000, C385S031000, C385S039000, C385S047000

Reexamination Certificate

active

10898336

ABSTRACT:
A wavelength division element includes a first filter and a second filter. The first filter has incident angle-to-transmission wavelength characteristics and separates multiplexed lights in a plurality of wavelength bands into first lights that are in a first wavelength band and first reflected lights. The first filter allows the first lights to pass through in a first direction and reflects the first reflected lights in a second direction. The second filter is located in the second direction and separates the first reflected lights into second lights that are in a second wavelength band and second reflected lights. The second filter allows the second lights to pass through in a third direction and reflects the second reflected lights in a fourth direction.

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Optical Thin Film, Chapter 2: Optical Properties of Multilayer Film, Kozo Ishiguro, Hideo Ikeda and Hideshi Yokota.

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