Thermal gradient prism for active beam steering

Details Thermal gradient prism for active beam steering Thermal gradient prism for active beam steering

2006-04-04

2006-04-04

Kianni, Kaveh (Department: 2883)

Optical waveguides

Accessories

Attenuator

C385S036000, C385S031000, C385S033000

Reexamination Certificate

active

07024091

ABSTRACT:
A variable optical attenuator (VOA) for use in an optical fiber communication system has a substrate, a thermal gradient prism and a heating element deposited on the prism. Heat is applied to the thermal gradient prism through the heating element. An optical signal is input into the prism via an optical signal input source. The optical signal traveling through the prism may be deflected due to a thermal gradient of the prism. The deflected optical signal is output into an optical signal output carrying medium. An optical signal strength measuring apparatus may measure a parameter related to the strength of the optical signal output into the optical signal output carrying medium.

REFERENCES:
patent: 5347395 (1994-09-01), Lautenschlager et al.
patent: 5956312 (1999-09-01), Ishihara
patent: 2002/0001135 (2002-01-01), Berman et al.
patent: 2003/0058537 (2003-03-01), Domroese et al.
patent: 2004/0120041 (2004-06-01), Silverstein et al.

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