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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 16 — Aug. 15, 2011
  • pp: 3142–3144

40 GHz mode-beating with 8 Hz linewidth and 64 fs timing jitter from a synchronized mode-locked quantum-dash laser diode

Ramón Maldonado-Basilio, Sylwester Latkowski, Severine Philippe, and Pascal Landais  »View Author Affiliations


Optics Letters, Vol. 36, Issue 16, pp. 3142-3144 (2011)
http://dx.doi.org/10.1364/OL.36.003142


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Abstract

Linewidth narrowing of the radio frequency beat-tones and the optical-modes is experimentally investigated in a 40 GHz quantum-dash mode-locked laser diode subject to optical injection of 10 GHz pulses. In comparison to the 75 kHz linewidth exhibited by the beat-tones in passive mode-locking conditions, a remarkable reduction to less than 8 Hz is achieved when the laser is under optical injection. From this beat-tone signal, an integrated root-mean-square timing jitter of 64 fs is calculated. In addition, a quadratic profile of the optical linewidth with the wavelength is observed in active locking, reaching a minimum of 1.7 MHz for the longitudinal modes around 1530 nm and progressively increasing to 37.4 MHz for modes at 1525 nm .

© 2011 Optical Society of America

OCIS Codes
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 15, 2011
Revised Manuscript: July 13, 2011
Manuscript Accepted: July 17, 2011
Published: August 10, 2011

Citation
Ramón Maldonado-Basilio, Sylwester Latkowski, Severine Philippe, and Pascal Landais, "40 GHz mode-beating with 8 Hz linewidth and 64 fs timing jitter from a synchronized mode-locked quantum-dash laser diode," Opt. Lett. 36, 3142-3144 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-16-3142

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