Patent ID: 6556733
Filing Date: 2003-04-29
Classification: G02B

Abstract:
An optical isolator comprising:an outer tube; a first optical collimator received in the outer tube, the first optical collimator comprising a first ferrule with an optical fiber therewithin and a first collimating lens, the first ferrule and the first collimating lens being secured within a first tube; a first birefringent crystal attached to an inner end of the first collimating lens; a second optical collimator received in the outer tube, the second optical collimator comprising a second ferrule with an optical fiber therewithin and a second collimating lens, the second ferrule and the second collimating lens being secured within a second tube; a second birefringent crystal attached to an inner end of the second collimating lens; and a Faraday rotator received in the outer tube and located between the first and second birefringent crystals.