Optical circulator

Details Optical circulator Optical circulator

1998-11-24

1999-07-27

Bovernick, Rodney

Optical waveguides

With optical coupler

Particular coupling structure

385 11, 359281, 359484, 359495, 359497, G02B 530

Patent

active

059304227

ABSTRACT:
A compact non-reciprocal optical waveguide-circulating device comprising three optical waveguides disposed along side one another at an input end adjacent a thin birefringent crystal to which they are optically coupled. The circulating device also includes at a distal end, a mirror for reflecting light backwards and providing a folded configuration. The device is capable of accepting a non-collimated beam of light that is launched from the input end through the birefringent crystal and rotating elements. By providing end faces at one end of the waveguides that are mode field expanded, light is effectively coupled between the waveguides and the adjacent crystal.

REFERENCES:
patent: 5471340 (1995-11-01), Cheng et al.
patent: 5689359 (1997-11-01), Kurata et al.
patent: 5706371 (1998-01-01), Pan
patent: 5768005 (1998-06-01), Cheng et al.

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