A new interferometric setup using a 3 × 3 coupler and two Faraday mirrors is presented. It has the advantages of being built only with passive components, of freedom from the polarization fading problem, and of operation with a LED. It is well suited for sensing time-dependent signals and does not depend on reciprocal or nonreciprocal constant perturbations.
© 1995 Optical Society of America
Equations on this page are rendered with MathJax. Learn more.