System and method for directionally-dependent polarization modification
AssigneeRaytheon Company
InventorsAndrew M. Kowalevicz, Benjamin P. Dolgin, Gary M. Graceffo
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Abstract
A system includes an optical transceiver configured to transmit and receive optical signals. The optical transceiver includes a Faraday rotator and a waveplate. The Faraday rotator and the waveplate are collectively configured to provide a relative polarization change between (i) light propagating in a first direction through the Faraday rotator and the waveplate and (ii) light propagating in a second direction opposite the first direction through the Faraday rotator and the waveplate. The waveplate may include a quarter waveplate or a half waveplate.
Claims20
An apparatus comprising:
- a Faraday rotator;
- and
- a waveplate;
- wherein the Faraday rotator and the waveplate are collectively configured to provide a relative polarization change between (i) light propagating in a first direction through the Faraday rotator and the waveplate and (ii) light propagating in a second direction opposite the first direction through the Faraday rotator and the waveplate;
- and
- wherein the Faraday rotator and the waveplate are collectively configured to cause the light propagating in the second direction to have a polarization rotation at a same angle but a different sign compared to a polarization rotation of the light propagating in the first direction.
A system comprising:
- an optical transceiver configured to transmit and receive optical signals, wherein the optical transceiver comprises:
- a Faraday rotator;
- and
- a waveplate;
- wherein the Faraday rotator and the waveplate are collectively configured to provide a relative polarization change between (i) light propagating in a first direction through the Faraday rotator and the waveplate and (ii) light propagating in a second direction opposite the first direction through the Faraday rotator and the waveplate;
- and
- wherein the Faraday rotator and the waveplate are collectively configured to cause the light propagating in the second direction to have a polarization rotation at a same angle but a different sign compared to a polarization rotation of the light propagating in the first direction.
A method comprising:
- propagating light in first and second directions through a Faraday rotator and a waveplate;
- and
- using the Faraday rotator and the waveplate to provide a relative polarization change between (i) the light propagating in the first direction through the Faraday rotator and the waveplate and (ii) the light propagating in the second direction opposite the first direction through the Faraday rotator and the waveplate;
- wherein the Faraday rotator and the waveplate cause the light propagating in the second direction to have a polarization rotation at a same angle but a different sign compared to a polarization rotation of the light propagating in the first direction.
Dependencies are inferred from the claim text.