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Low-noise x-band tunable microwave generator based on external cavity lasers
Author(s): Michael J. Wishon; Daeyoung Choi; Evgeny A. Viktorov; Yanne K. Chembo; Alexandre Locquet
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Paper 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.

Paper Details

Date Published: 26 February 2019
PDF: 4 pages
Proc. SPIE 10912, Physics and Simulation of Optoelectronic Devices XXVII, 109120H (26 February 2019); doi: 10.1117/12.2509660
Show Author Affiliations
Michael J. Wishon, Georgia Tech-Lorraine, CNRS (France)
Georgia Institute of Technology (United States)
Daeyoung Choi, Georgia Tech-Lorraine, CNRS (France)
Georgia Institute of Technology (United States)
Evgeny A. Viktorov, ITMO Univ. (France)
Yanne K. Chembo, Georgia Tech-CNRS Joint Lab. (France)
Alexandre Locquet, Georgia Tech-Lorraine, CNRS (France)
Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 10912:
Physics and Simulation of Optoelectronic Devices XXVII
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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