Optical circulator

Details Optical circulator Optical circulator

G - Physics

02

B

88/98

G02B 27/10 (2006.01) G02B 27/28 (2006.01)

Patent

CA 1217962

- 11 - OPTICAL CIRCULATOR Abstract A polarization independent optical circulator is disclosed. A first birefringent plate is used to separate an incident beam from a first port into two beams having orthogonal polarizations, and a second plate recombines the beams at a second port. Means providing nonreciprocal rotation of the polarizations are disposed between the plates. Placed between the rotating means and the second plate is a third plate to further separate the beams and a reflecting element for deflecting the beams toward the second port. The reflecting element includes a slotted portion so that light from a third port can pass therethrough back toward the first port.

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