Techniques for equalizing powers of multiple local oscillator beams using optical attenuators

Abstract

Aspects of the present disclosure provide an amplifier chip comprising: an optical source configured to generate a plurality of beams, a plurality of output waveguides configured to convey the plurality of beams, a plurality of semiconductor optical amplifiers (SOAs), each of the plurality of SOAs configured to receive a respective beam from the plurality of waveguides and amplify the respective beam, and a plurality of output couplers configured to output the plurality of amplified beams from the amplifier chip. The apparatus further comprises a silicon photonic integrated circuit (SPIC), comprising: a plurality of input couplers, where each of the plurality of input couplers is aligned with a respective output coupler on the amplifier chip so as to receive the plurality of amplified beams, and optical processing circuitry disposed on the SPIC and configured to receive and process one or more of the amplified beams from the plurality of input couplers.

Dependencies are inferred from the claim text.