Polarization-maintaining optical isolator

Details Polarization-maintaining optical isolator Polarization-maintaining optical isolator

2006-10-24

2006-10-24

Font, Frank G (Department: 2883)

Optical waveguides

Polarization without modulation

Reexamination Certificate

active

07127130

ABSTRACT:
The application discloses an optical isolator having an input and an output, the optical isolator comprising a phase retardation plate positioned at the input, and an optical rotator positioned between the phase-retardation plate and the output, the isolator comprising a Faraday rotator positioned between a first polarizer and a second polarizer. The application also discloses a process comprising rotating a polarization of an optical signal using a phase retardation plate, and following the rotation of the polarization of the optical signal using a phase retardation plate, further rotating the polarization of the optical signal using an optical rotator.

REFERENCES:
patent: 5727109 (1998-03-01), Pan et al.
patent: 6178044 (2001-01-01), Li et al.
patent: 6587266 (2003-07-01), Tai et al.
patent: 2003/0090796 (2003-05-01), Tai et al.
patent: 2004/0184148 (2004-09-01), Chang et al.

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