Polarization-maintaining optical isolator
AssigneeIntel Corporation
InventorNathan L. Shou
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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.
Claims22
An optical isolator having an input and an output, the optical isolator comprising:
- a phase retardation plate positioned at the input, wherein the phase retardation plate is the first polarization-modifying component encountered by an optical signal entering through the input;
- and
- an optical rotator positioned between the phase-retardation plate and the output, the optical rotator comprising a Faraday rotator positioned between a first polarizer and a second polarizer.
A process comprising:
- rotating a polarization of an optical signal using a phase retardation plate, wherein the phase retardation plate is the first polarization-modifying component encountered by the optical signal;
- 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.
A system comprising:
- an optical signal source;
- an optical isolator having an input and an output, the optical signal source being coupled to the input, and the optical isolator comprising:
- a phase retardation plate positioned at the input, wherein the phase retardation plate is the first polarization-modifying component encountered by the optical signal,
- an optical rotator positioned after the phase-retardation plate, the optical rotator comprising a first Faraday rotator positioned between a first polarizer and a second polarizer;
- and
- a polarization-maintaining fiber connected to the output of the optical isolator.
Dependencies are inferred from the claim text.