POLARIZATION SEPARATOR, POLARIZATION SEPARATION STRUCTURE, OPTICAL MIXER, AND METHOD FOR MANUFACTURING POLARIZATION SEPARATOR

摘要

A polarization separator includes a polarization separation film, an analyzer, and optical waveguides. The analyzer emits a linearly polarized light of a light, the linearly polarized light including a TE light and a TM light, the intensities of the TE TM lights being equal to each other. The polarization separation film is arranged on a substrate, transmits a TE light, reflects a TM light, and performing polarization separation on the linearly polarized light. An end surface of the first optical waveguide is opposed to a first surface of the polarization separation film, and a waveguide direction of the first optical waveguide is a direction in which the TE light propagates. An end surface of the second optical waveguide is opposed to a second surface of the polarization separation film, and a waveguide direction of the second optical waveguide is a direction in which the TM light propagates.

主权项

1. A polarization separator comprising:
a substrate; an analyzer that emits a linearly polarized light including a first polarization signal and a second polarization signal included in an incident light, the second polarization signal being different from the first polarization signal, and the intensity of the first polarization signal and the intensity of the second polarization signal being equal to each other; a polarization separation film arranged on the substrate, the polarization separation film performing polarization separation on the linearly polarized light by transmitting the first polarization signal and reflecting the second polarization signal; a first optical waveguide formed on the substrate, an end surface of the first optical waveguide being opposed to a first surface of the polarization separation film, and a waveguide direction of the first optical waveguide being a direction in which the first polarization signal propagates; and a second optical waveguide formed on the substrate, an end surface of the second optical waveguide being opposed to a second surface which is a surface opposite to the first surface of the polarization separation film, and a waveguide direction of the second optical waveguide being a direction in which the second polarization signal propagates.