| 摘要 |
An optical transceiver module includes a semiconductor laser that emits light along a first optical axis. A grating coupler, located in a plane including the first optical axis, diffracts the emitted light out of the plane and into an external optical system. A photodetector receives incoming light from the external optical system on a second optical axis that passes through the grating coupler at an angle to the plane. The photodetector can be placed parallel to the plane, directly above or below the grating coupler, to create an extremely compact optical transceiver module.
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