ARRAYED WAVEGUIDE GRATING WITH REUSABLE DELAY LINE (AWG-RDL)
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United States of America Patent
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Issued Date -
Feb 15, 2024
app pub date -
May 16, 2023
filing date -
May 16, 2022
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Abstract
An arrayed waveguide grating (AWG) can have a reusable delay line, a plurality of coupling devices, and a free propagation region (FPR). The delay line can have a continuous first waveguide connected to receive a plurality of wavelengths. Each coupling device can have a second waveguide coupled to a respective portion of the continuous first waveguide. The FPR can have input and output ends. The input end of the FPR can be coupled to receive the radiation from each of the coupling devices. The radiation can be directed to spatially-separated output channels based on wavelength at the output end of the FPR. The plurality of coupling devices and the delay line are configured to control power and phase distributions of the radiation transmitted to the FPR.
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