Optical switch and optical switching matrix having a plurality o

Details Optical switch and optical switching matrix having a plurality o Optical switch and optical switching matrix having a plurality o

1995-10-19

1998-07-21

Ullah, Akm E.

Optical waveguides

With optical coupler

Switch

G02B 626, G02B 642

Patent

active

057845050

ABSTRACT:
An optical switch, in which optical input signals are fed together with pumping light to input waveguides. Output waveguides and/or conducting waveguides connected downstream thereof are doped with a dopant which effects amplification of the signal light. A wavelength-selective coupling element is arranged on the output side for the purpose of coupling out the pumping light. This improves signal quality, since the interfering pumping light is virtually no longer present downstream of the wavelength-selective coupling element.

REFERENCES:
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patent: 4946236 (1990-08-01), Dautartas et al.
patent: 5010542 (1991-04-01), Pfaff
patent: 5050954 (1991-09-01), Gardner et al.
patent: 5255332 (1993-10-01), Welch et al.
patent: 5440654 (1995-08-01), Lambert, Jr.
patent: 5446809 (1995-08-01), Fritz et al.

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