Low-noise x-band tunable microwave generator based on external cavity lasers

Michael J. Wishon; Daeyoung Choi; Evgeny A. Viktorov; Yanne K. Chembo; Alexandre Locquet

doi:10.1117/12.2509660

26 February 2019 Low-noise x-band tunable microwave generator based on external cavity lasers

Michael J. Wishon, Daeyoung Choi, Evgeny A. Viktorov, Yanne K. Chembo, Alexandre Locquet

Proceedings Volume 10912, Physics and Simulation of Optoelectronic Devices XXVII; 109120H (2019) https://doi.org/10.1117/12.2509660
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

A relatively simple and stable microwave oscillator tunable across the full X-band is achieved. The microwave oscillations are self-generated limit-cycles produced by a laser diode subjected to optical feedback from a mirror. Further, the oscillations are stabilized utilizing two techniques in tandem, the first being a resonance effect based on locking the two inherent timescales of the laser, and the second being optoelectronic feedback. The resulting stable oscillations are fully tunable across the X-band from 5.5 to 12.1 GHz with typical phase noise performance of -107 dBc/Hz at 10 kHz offset. Further, the system is relatively simple by not requiring multiple lasers, radio-frequency filters, external RF sources, or any specialized equipment, thus, enabling a compact and low-cost microwave oscillator for applications in radar, radio over fiber, and telecommunications.

Conference Presentation

Citation Download Citation

Michael J. Wishon, Daeyoung Choi, Evgeny A. Viktorov, Yanne K. Chembo, and Alexandre Locquet "Low-noise x-band tunable microwave generator based on external cavity lasers", Proc. SPIE 10912, Physics and Simulation of Optoelectronic Devices XXVII, 109120H (26 February 2019); https://doi.org/10.1117/12.2509660

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