Light branching and insertion apparatus and optical transmission

Details Light branching and insertion apparatus and optical transmission Light branching and insertion apparatus and optical transmission

1997-02-14

1999-09-21

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359127, H04J 1402

Patent

active

059561670

ABSTRACT:
The invention provides a light branching and insertion apparatus wherein branching and insertion of signal light can be effected accurately with a low loss and with a high degree of accuracy by optical transmission lines of a simple construction. The apparatus includes a first branching element for outputting signal light of a first wavelength from within signal light inputted from a first optical fiber to a third optical fiber and outputting signal light of the other wavelengths to a fourth optical fiber, a first insertion element for outputting signal light inputted from a fifth optical fiber to a second optical fiber, a second branching element for outputting signal light of a second wavelength from within signal light inputted from a sixth optical fiber to an eighth optical fiber and outputting signal light of the other wavelengths to a ninth optical fiber, a second insertion element for outputting signal light inputted from a tenth optical fiber to a seventh optical fiber, a third branching element for outputting signal light of a third wavelength from within signal light inputted from an eleventh optical fiber to the fifth optical fiber and outputting signal light of the other wavelengths to the tenth optical fiber, and a third insertion element for outputting signal light inputted from the ninth optical fiber to a twelfth optical fiber.

REFERENCES:
patent: 5572357 (1996-11-01), Nakazato et al.
patent: 5586115 (1996-12-01), Nakano et al.
patent: 5615290 (1997-03-01), Harasawa et al.
patent: 5726785 (1998-03-01), Chawki et al.
patent: 5751456 (1998-05-01), Koonen
patent: 5778118 (1998-07-01), Sridhar

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