Through silicon modulator and method using polarized light
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United States of America Patent
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Jul 31, 2001
Grant Date -
N/A
app pub date -
Dec 30, 1998
filing date -
Dec 30, 1998
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Abstract
Through silicon optical modulators (TSOM) formed in a silicon integrated circuit comprise an array of MOSFET elements which cause optical phase shifts of reflected light to identify a state of a signal. A polarization of the reflected light is modified by the phase shift and transmits the signal. The polarization of reflected light can be controlled by the angle of the incident light, by polarizing optical slits fabricated in the modulator, or by using a polarized mirror. Either embodiment allows the polarized reflected light to be nulled out. As such, a polarization of the reflected light is altered when the signal is applied to the modulator. The altered polarization can then be detected.
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