Patent ID: 6580558
Filing Date: 2003-06-17
Classification: G02B,Y10S

Abstract:
An optical isolator comprising:a first pigtail assembly comprising a first ferrule and a first optical fiber, one end of the first optical fiber arranged within the first ferrule; a first collimating lens aligned with the first pigtail assembly; an optical rotator assembly aligned with the first collimating lens, and comprising a first birefringent wedge and an optical rotator enclosed in a magnet; an adjustable assembly aligned with the rotator assembly, the adjustable assembly comprising a holder, a second birefringent wedge substantially retained in the holder, and a second collimating lens partially retained in the holder, thereby providing an access thereto; and a second assembly comprising a second ferrule, and a second optical fiber, one end of the second optical fiber arranged within the second ferrule; wherein the rotator is positioned between the first and second birefringent wedges and the position of the adjustable assembly is adjustable relative to the rotator assembly for achieving precise positional relationship among the rotator and the first and second birefringent wedges.