Optoelectronic oscillator using monolithically integrated multi-quantum well laser and phase modulator

A device comprising:

• a tunable multi-mode laser configured to generate a multi-mode optical signal at a tuned wavelength;
• and
• a feedback loop coupled to the tunable multi-mode laser to receive the multi-mode optical signal and including at least one delay line, wherein an output of the delay line is fed back to the tunable multi-mode laser in order to provide at least one of self-injection locking and self-phase locked looping for the tunable multi-mode laser,
• wherein the tunable multi-mode laser includes:
• at a first end of the tunable multi-mode laser, a semiconductor optical gain region;
• at a second end of the tunable multi-mode laser, a feedback region including a feedback mirror configured to sustain an optical signal at a plurality of wavelengths separated by an inter-modal separation frequency;
• and
• between the semiconductor optical gain region and feedback region, a phase modulation region configured to control a phase of the multi-mode optical signal transmitted through the phase modulation region,
• wherein the output of the delay line fed back into the tunable multi-mode laser is configured to bias each of the semiconductor optical gain region and phase modulation region in order to reduce phase drift of the multi-mode optical signal.