Polarization Control Device and Polarization Control Method

摘要

A polarization control device and a polarization control method, wherein the polarization control device includes a polarization beam splitting apparatus, a first phase shifter, a beam combiner, a first waveguide, a second waveguide, and a third waveguide, where the polarization beam splitting apparatus is configured to split input light into two beams of transverse electric (TE) mode light or two beams of transverse magnetic (TM) mode light, where the first phase shifter is configured to adjust a phase of light that is input to the first phase shifter, and the beam combiner is configured to adjust a split ratio of the beam combiner, and combine the two beams of TE mode light or the two beams of TM mode light that is input from a first input port and a second input port of the beam combiner, into one beam of TE mode light or one beam of TM mode light.

主权项

1. A polarization control device, comprising:
a polarization beam splitting apparatus; a first phase shifter; a beam combiner; a first waveguide; a second waveguide; and a third waveguide, wherein the first waveguide is configured to connect a first output port of the polarization beam splitting apparatus and a first input port of the beam combiner, wherein the second waveguide is configured to connect a second output port of the polarization beam splitting apparatus and an input port of the first phase shifter, wherein the third waveguide is configured to connect an output port of the first phase shifter and a second input port of the beam combiner, wherein the polarization beam splitting apparatus is configured to split input light into two beams of transverse electric (TE) mode light or two beams of transverse magnetic (TM) mode light, wherein the two beams of TE mode light are output through the first output port and the second output port of the polarization beam splitting apparatus, respectively, or the two beams of TM mode light are output through the first output port and the second output port of the polarization beam splitting apparatus, respectively, wherein the first phase shifter is configured to adjust a phase of light that is input to the first phase shifter, and wherein the beam combiner is configured to:
adjust a split ratio of the beam combiner; andeither combine the two beams of TE mode light that are respectively input from the first input port and the second input port of the beam combiner, into one beam of TE mode light, or combine the two beams of TM mode light that are respectively input from the first input port and the second input port of the beam combiner, into one beam of TM mode light.