OPTICAL DETECTOR, OPTICAL RECEIVER, AND OPTICAL TRANSCEIVER
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United States of America
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Issued Date -
Jan 9, 2025
app pub date -
Jun 26, 2024
filing date -
Jun 26, 2024
priority date (Note) -
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Abstract
An optical detector includes a photodetector that converts signal light into an electric signal, and a mode filter. The photodetector includes a first port to which signal light of a first mode is input, and a second port to which signal light of a second mode is input. The mode filter includes a third port connected to the first port, and a fourth port connected to the second port. The mode filter passes the signal light of the first mode towards the first port to be output from the third port, passe the signal light of the second mode towards the second port to be output from the fourth port, removes the signal light of the second mode from the first port input from the third port, and removes the signal light of the first mode from the second port input from the fourth port.
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