Optical switch and optical waveform monitoring apparatus
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United States of America Patent
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Dec 14, 2010
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app pub date -
Nov 30, 2007
filing date -
Nov 30, 2006
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Abstract
According to an aspect of an embodiment, an optical switch comprises: a coupler for coupling a signal light and a control pulse; a first nonlinear medium for amplifying the signal light in accordance with the polarization direction of the control pulse light by nonlinear effect; a first polarizer outputting a component light in a signal light and the control pulse light in parallel with the transmission axis of the first polarizer; a second nonlinear medium for changing status of polarization of the signal light by nonlinear effect; and a second polarizer outputting a signal light and a control pulse light in parallel with the transmission axis of the second polarizer.
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