Method for optical switching and an optical switch

Details Method for optical switching and an optical switch Method for optical switching and an optical switch

1991-02-19

1992-08-04

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

372 6, 385 16, 385 43, 385 50, G02B 626

Patent

active

051366703

ABSTRACT:
A method for optical switching using an optical directional coupler. In a first step, excitation light is supplied to an interaction region of the coupler having input and output ports. The interaction region is doped with an active ion having the capability for optical amplification. In a second step, signal light is inputted to one of the input ports and amplified in the interaction region. In a third step, the signal light is outputted from one of the output ports depending on whether saturation of optical gain takes place or not.

REFERENCES:
patent: 4515431 (1985-05-01), Shaw et al.
patent: 4546476 (1985-10-01), Shaw et al.
patent: 4674830 (1987-06-01), Shaw et al.
patent: 4938561 (1990-07-01), Grasso et al.
patent: 4962987 (1990-10-01), Doran
patent: 4995690 (1991-02-01), Islam

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