Abstract
This paper reports both theoretical and experimental studies on nonlinear
optical phenomena generated at very low thresholds in fiber ring resonators
featuring ultrahigh quality factors. These studies are focused on two optical
scattering phenomena: the Rayleigh and the Brillouin scatterings. The effects
of these scattering phenomena on the phase noise of an optoelectronic oscillator
based on the fiber ring resonator are detailed. A 30 dB reduction in the oscillator
phase noise at 10 Hz offset frequency has been demonstrated by limiting the
nonlinear scattering effects when using low input optical power. Moreover,
a new high quality factor fiber ring resonator, optimized and immunized against
some of these nonlinear optical effects, has been designed and an oscillator
phase noise level of -50 dBc/Hz at 10 Hz offset frequency has been achieved.
© 2013 IEEE
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