Thermo-optic wave-guide switch

Details Thermo-optic wave-guide switch Thermo-optic wave-guide switch

2005-06-28

2005-06-28

Williams, Joseph (Department: 2879)

Optical waveguides

With optical coupler

Particular coupling structure

C385S004000, C385S039000, C385S129000

Reexamination Certificate

active

06912344

ABSTRACT:
A thermo-optic wave-guide switch. The switch selectively switches the paths of an optical signal. The thermo-optic wave-guide switch includes a multi-mode wave-guide having an input port, a first output port and a second output port, and a thin film heater formed on the side of the multi-mode wave-guide. When the thin film heater does not provide the multi-mode wave-guide with heat and a signal is received by the input port, the first output port outputs the signal in a cross state according to the self-image theorem, and when the thin film heater provides the multi-mode wave-guide with heat and a signal is received by the input port, the second output port outputs the signal in a bar state.

REFERENCES:
patent: 4127320 (1978-11-01), Li
patent: 4753505 (1988-06-01), Mikami et al.
patent: 6122416 (2000-09-01), Ooba et al.
patent: 6215918 (2001-04-01), Keil et al.
patent: 6449404 (2002-09-01), Paiam
patent: 6470125 (2002-10-01), Nashimoto et al.
patent: 6535672 (2003-03-01), Paiam

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