Thermo-optic wave-guide switch
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United States of America Patent
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Jun 28, 2005
Grant Date -
May 29, 2003
app pub date -
May 6, 2002
filing date -
Nov 29, 2001
priority date (Note) -
Expired
status (Latency Note)
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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.
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