Optical waveguides – With optical coupler – Particular coupling structure
Patent
1995-03-22
1996-10-15
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Particular coupling structure
385 16, 385 31, 385 45, 25022711, G02B 635
Patent
active
055662633
ABSTRACT:
A system for tuning an integrated optical switch element utilizes a reflection from a light signal that is propagated into a first input port defined on one side of an interaction region of the optical switch element. The reflection occurs beyond an opposite side of the interaction region from the side on which the light signal is introduced. The reflection is detected at a second input port of the optical switch element on the same side of the interaction region as the side on which the light signals is introduced. The reflection is used to tune the optical switch element to a desired switch state by minimizing the reflection detected at the second input port. By minimizing the reflection detected at the second input port for a desired switch state, the strength of the optical signal through the wave guide channels intended to be used to propagate the light signal in the desired switch state is maximized. As a result, the switching extinction ratio for the optical switch element in the desired switch state is optimized. The system can be used to selectively tune a single optical switch element, or can be used to selectively tune multiple integrated optical switch elements that form an optical switch matrix on a common substrate, for example.
REFERENCES:
patent: 4769534 (1988-09-01), Brand
patent: 4960989 (1990-10-01), Liebenrood et al.
patent: 4968880 (1990-11-01), Beller
patent: 5013907 (1991-05-01), Bateman
patent: 5020872 (1991-06-01), DuPuy et al.
patent: 5023445 (1991-06-01), Goll et al.
patent: 5028775 (1991-07-01), Furukawa et al.
patent: 5045689 (1991-09-01), Froehly et al.
patent: 5050947 (1991-09-01), Kawashima et al.
patent: 5065201 (1991-11-01), Yamauchi
patent: 5072111 (1991-12-01), Gilino
patent: 5093568 (1992-03-01), Maycock
patent: 5144125 (1992-09-01), Carter et al.
patent: 5149961 (1992-09-01), Arnold et al.
patent: 5218198 (1993-06-01), Bristow et al.
patent: 5218468 (1993-06-01), Shaw
patent: 5255334 (1993-10-01), Mak et al.
patent: 5259044 (1993-11-01), Isono et al.
patent: 5261014 (1993-11-01), Bruno et al.
patent: 5283842 (1994-02-01), Hakogi et al.
patent: 5388172 (1995-02-01), Anderson
"Photonic switches set to prosper," Zucker et al., Physics World, Sep. 1991, pp. 57-60.
"Electro-optically switched coupler with stepped .DELTA..beta. reversal using Ti-diffused LiNbO.sub.3 waveguides," Schmidt et al., Applied Physics Letters, vol. 28, No. 9, May 1, 1976, pp. 503-506.
"Switch Arrays for Photonic Switching, Status Review and Prospects," Thylen et al., Globecom '90 IEEE Global Telecommunications Conference & Exhibition, vol. 2, Dec. 1990, pp. 1296-1300.
Attanasio Daniel V.
Hare George R.
Smith Terry L.
Watson James E.
Bovernick Rodney B.
Griswold Gary L.
Gwin, Jr. H. Sanders
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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