Optical circulator or switch having a birefringent wedge positioned between faraday rotators

摘要

An optical device, such an as optical circulator or switch, which includes a birefringent tapered element, such as a birefringent wedge, positioned between first and second Faraday rotators. Light travels through the first Faraday rotator, the first birefringent tapered element and then the second Faraday rotator, in order, and along travel paths which are not parallel to each other.