Patent ID: 6826319
Filing Date: 2004-11-30
Classification: G02B,G02F

Abstract:
An optical isolator comprising:a first optical collimator comprising: a first collimating lens, an input optical fiber terminating opposite one end of the first collimating lens, and a ferrule retaining the input fiber therein; a second optical collimator comprising: a second collimating lens, an output optical fiber terminating opposite one end of the second collimating lens, and a ferrule retaining the output fiber therein; and an optical isolating unit disposed between the first and second optical collimators, the optical isolating unit comprising: a first birefringent wedge and a second birefringent wedge, an optical rotator disposed between the first and second birefringent wedges, two beam displacers disposed at opposite ends of the optical rotator, and a magnetic tube enclosing the first birefringent wedge, the optical rotator and the second birefringent wedge sequentially therein.