Four-port PM circulator

Details Four-port PM circulator Four-port PM circulator

2005-04-19

2005-04-19

Bovernick, Rodney (Department: 2874)

Optical waveguides

Polarization without modulation

C385S031000, C359S483010

Reexamination Certificate

active

06882759

ABSTRACT:
A four-port circulator includes a first birefringent crystal, a structured polarization rotator, a first birefringent wedge, a second birefringent crystal, a non-reciprocal device, and a second birefringent wedge. The structured polarization rotator is coupled to the first birefringent crystal. The first birefringent wedge is coupled to the structured polarization rotator. The second birefringent crystal is coupled to the first birefringent wedge. The non-reciprocal device is coupled to the second birefringent crystal. The second birefringent wedge is coupled to the non-reciprocal device.

REFERENCES:
patent: 5930039 (1999-07-01), Li et al.
patent: 6014475 (2000-01-01), Frisken
patent: 6339661 (2002-01-01), Kokkelink et al.
patent: 6445499 (2002-09-01), Chang et al.
patent: 6587267 (2003-07-01), Tai et al.
patent: 6590706 (2003-07-01), Xie et al.
patent: 6636651 (2003-10-01), Li

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