Title :
Frequency-Independent Phase Noise in a Dual-Wavelength Brillouin Fiber Laser
Author :
Callahan, Patrick T. ; Gross, Michael C. ; Dennis, Michael L.
Author_Institution :
Appl. Phys. Lab., Johns Hopkins Univ., Laurel, MD, USA
Abstract :
An in-depth analysis of the phase noise of a microwave oscillator based on dual-wavelength stimulated Brillouin scattering is presented. The system is investigated under the influence of injection-locking and also in a regenerative-frequency configuration. Measurements from 1 to 25 GHz demonstrate the invariance of the phase-noise spectrum with respect to carrier frequency. Phase noise of -90 dBc/Hz at 1-kHz offset is shown, and is compared to the best reported performance of optical heterodyne sources. The frequency stability of the oscillator is also discussed.
Keywords :
fibre lasers; laser frequency stability; laser mode locking; laser noise; microwave oscillators; microwave photonics; phase noise; stimulated Brillouin scattering; carrier frequency; dual-wavelength Brillouin fiber laser; dual-wavelength stimulated Brillouin scattering; frequency 1 GHz to 25 GHz; frequency 1 kHz; frequency stability; frequency-independent phase noise; injection-locking; microwave oscillator; optical heterodyne sources; regenerative-frequency configuration; Frequency modulation; Laser noise; Masers; Phase noise; Scattering; Brillouin scattering; microwave generation; optical fiber lasers; phase noise;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2011.2160047
