Spatially dephasing local oscillator for coherent free-space optical communications
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United States of America Patent
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Nov 6, 2018
Grant Date -
Jan 11, 2018
app pub date -
Jul 7, 2016
filing date -
Jul 7, 2016
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Abstract
A coherent transceiver system includes a local oscillator (LO) light source to generate an LO optical signal. An adaptive fiber array is coupled to the LO light source to dephase the LO optical signal. A balanced detector is coupled to the adaptive fiber array to receive a dephased LO signal from the adaptive fiber array and an optical input signal and to generate a heterodyne signal. A controller receives the heterodyne signal and generates one or more control signals. The adaptive fiber array utilizes the control signals to dephase the LO optical signal.
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