Abstract
Component birefringence can cause signal impairments in phase modulated
optical links. At the transmitter, imperfect launch conditions couple phase
modulation to unintended polarization modulation. At the receiver, polarization
modulation creates spurious photocurrents due to birefringence in, and time
delays between, interferometric paths. In this paper, we analyze such systems,
and develop a formula for the photocurrent as a function of 11 system parameters.
We utilize both the Jones description and our recent generalization of the
Stokes description that includes optical phase, examine several special cases
for phase modulated RF optical links, and evaluate some typical system performance
issues.
© 2013 USGov
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