Method for adjusting optical receiver and apparatus for adjusting polarization of optical receiver
AssigneeSumitomo Electric Industries, Ltd.
InventorYoshihiro Tateiwa
Life of this patent
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Abstract
An optical receiver is disclosed. The optical receiver includes a polarization holding fiber configured to receive a light emitted from a light source and a polarizer configured to be irradiated with the light output from the polarization holding fiber. A method for adjusting the optical receiver comprises: inputting a plurality of lights having different wavelengths to a polarization holding fiber; detecting intensities of a plurality of lights output from the polarization holding fiber; calculating an adjustment value for an angle of the polarization holding fiber based on a ratio between the detected intensities of the plurality of lights; and adjusting the angle of the polarization holding fiber based on the calculated adjustment value.
Claims10
A method for adjusting an optical receiver including a polarization holding fiber configured to receive a light emitted from a light source and a polarizer configured to be irradiated with the light output from the polarization holding fiber, the method comprising:
- inputting a plurality of lights having different wavelengths to the polarization holding fiber;
- detecting intensities of the plurality of lights output from the polarization holding fiber;
- calculating an adjustment value for an angle of the polarization holding fiber based on a ratio of the detected intensities of the plurality of lights;
- and
- adjusting the angle of the polarization holding fiber based on the calculated adjustment value.
An apparatus for adjusting polarization of an optical receiver comprising:
- a polarization holding fiber configured to receive a light emitted from a light source;
- a polarizer configured to be irradiated with the light output from the polarization holding fiber;
- a polarization controller configured to adjust an angle of the polarization holding fiber;
- and
- a control unit configured to control the polarization controller,
- wherein, after the control unit detects intensities of a plurality of lights having different wavelengths and being output from the polarization holding fiber, the control unit is configured to calculate an adjustment value for an angle of the polarization holding fiber based on a ratio between the detected intensities of the plurality of lights, and
- wherein the polarization controller is configured to adjust the angle of the polarization holding fiber based on the calculated adjustment value.
Dependencies are inferred from the claim text.