A study of a ring resonator in a Sagnac loop is presented. The results of a theoretical analysis based on Jones calculus are confirmed by experiments. Comparison of a ring resonator in a Sagnac loop with a ring only is performed, and the advantages of our scheme are pointed out. The scheme can be used to increase the measurement sensitivity to small birefringence and associated polarization mode dispersion and to decrease the threshold for Sagnac-loop-based nonlinear switching and laser mode locking.
© 2005 Optical Society of America
(060.2310) Fiber optics and optical communications : Fiber optics
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(260.1440) Physical optics : Birefringence
Eli Simova, Ilya Golub, and Marie-Josée Picard, "Ring resonator in a Sagnac loop," J. Opt. Soc. Am. B 22, 1723-1730 (2005)