Communications Circuitry with Injection Locking Mode Control

Abstract

An electronic device may include signal generation circuitry that generates an optical signal for performing communications. The circuitry may include a laser coupled to a first port of an optical resonator over an optical path. An optical phase shifter may be disposed on the optical path. The signal generation circuitry may include multi-mode mitigation circuitry coupled in a loop between a second port of the optical resonator and the optical phase shifter. The laser may begin transmitting the optical signal. The laser may become injection locked to the optical resonator. The laser may initially operate in a multi-mode condition while injection locked to the optical resonator. The optical signal may include multiple signal peaks while the laser operates in the multi-mode condition. The multi-mode mitigation circuitry may process the optical signal until the optical signal includes only a single peak, corresponding to a single-mode condition of the laser.

Dependencies are inferred from the claim text.