Optimum DC bias for an electro-optic switch
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United States of America Patent
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Nov 29, 2011
Grant Date -
Jan 29, 2009
app pub date -
Jul 26, 2007
filing date -
Jul 26, 2007
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Abstract
A method for balancing optical transmission for a first ON state and a second ON state of an electro-optic switch having an RF input port and a DC port, in one implementation, comprises the steps of associating a positive RF voltage with the first ON state of the electro-optic switch, associating a negative RF voltage with the second ON state of the electro-optic switch, wherein absolute value of the negative RF voltage associated with the second ON state is approximately equal to the positive RF voltage associated with the first ON state, and balancing optical transmission of the first ON state and the second ON state by adjusting a voltage applied to the DC port to obtain minimum optical transmission in an OFF state of the electro-optic switch.
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