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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 21 — Oct. 13, 2008
  • pp: 16670–16679

A micromachined tunable coupled-cavity laser for wide tuning range and high spectral purity

H. Cai, B. Liu, X. M. Zhang, A. Q. Liu, J. Tamil, T. Bourouina, and Q. X. Zhang  »View Author Affiliations


Optics Express, Vol. 16, Issue 21, pp. 16670-16679 (2008)
http://dx.doi.org/10.1364/OE.16.016670


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Abstract

This paper presents the design and experimental study of a coupled-cavity laser based on the micromachining technology for wide tuning range and improved spectral purity. The core part of this design utilizes a deep-etched movable parabolic mirror to couple two identical Fabry-Pérot chips and thus allows the active adjustment of the cavity gap so as to optimize the mode selection and to increase the tuning range as well. In experiment, the laser achieves the single longitudinal mode output over 51.3 nm and an average side-mode-suppression ratio of 22 dB when the tuning current varies from 5.7–10.8 mA. The measured wavelength tuning speed is 1.2 µs and the single mode output is stable at any wavelength when the tuning current is varied within ±0.06 mA. Compared with the conventional fixed cavity gap coupled-cavity lasers, such design overcomes the phase mismatching and mode instability problems while maintaining the merit of high-speed wavelength tuning using electrical current.

© 2008 Optical Society of America

OCIS Codes
(140.3600) Lasers and laser optics : Lasers, tunable
(140.3325) Lasers and laser optics : Laser coupling
(230.4685) Optical devices : Optical microelectromechanical devices
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 14, 2008
Revised Manuscript: September 24, 2008
Manuscript Accepted: September 30, 2008
Published: October 3, 2008

Citation
H. Cai, B. Liu, X. M. Zhang, A. Q. Liu, J. Tamil, T. Bourouina, and Q. X. Zhang, "A micromachined tunable coupled-cavity laser for wide tuning range and high spectral purity," Opt. Express 16, 16670-16679 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-21-16670


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