Patent ID: 6813400
Filing Date: 2004-11-02
Classification: G02B,G02F

Abstract:
An optical isolator comprising:a housing tube; a first collimator, including a collimator holder, affixed within the housing tube, for receiving and collimating an optical signal from a first optical fiber; a second collimator affixed within the housing tube, for receiving and collimating an optical signal from a second optical fiber; and a core assembly residing within the housing tube between the first collimator and second collimator, the core assembly including a cylindrical permanent magnet that is joined at one end to an end of the collimator holder of the first collimator, wherein the core assembly is configured to pass substantially all the light received from the first collimator to the second collimator and pass substantially none of the light received from the second collimator to the first collimator.