Abstract
The temporal drift due to the polarization noise in an ultralow
temporal drift photonic phase reference distribution system is analyzed. The
temporal drift is shown to be associated with the polarization changes, the
differential group delay of the subsequent parts, and, the state of polarization
dispersion of the photonic local oscillator signal. Such temporal drift cannot
be corrected by line length correction schemes. As an example, polarization
changes from a fiber stretcher are presented, discussed, and identified as
one of the major contributors to the system temporal drift. A numerical model
is developed. The magnitude and statistical distribution (based on random
coupling) of the temporal drift excited by the polarization change of the
fiber stretcher are investigated. Experimental work demonstrates that reduction
in the polarization change successfully reduces the temporal drift, as predicted
by the theory and simulation.
© 2008 IEEE
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