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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 24 — Nov. 24, 2008
  • pp: 19872–19881

Pulse-shaping of gain-switched pulse from multimode laser diode using fiber Sagnac interferometer

Kenji Wada, Shuji Takamatsu, Hideyuki Watanabe, Tetsuya Matsuyama, and Hiromichi Horinaka  »View Author Affiliations


Optics Express, Vol. 16, Issue 24, pp. 19872-19881 (2008)
http://dx.doi.org/10.1364/OE.16.019872


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Abstract

We propose a pulse-tail elimination and pulse shortening method using an optical interferometer, which is effective for picosecond chirped pulses from gain-switched multimode laser diodes. In a numerical simulation, when the delay distance between a chirped pulse and its replica in an optical interferometer matches two times the round-trip optical length of the laser cavity, the pulse-front and -rear tail parts are effectively eliminated from the input chirped pulse after passing through the optical interferometer. Using this method with a fiber Sagnac interferometer, a 33 ps pulse with a long-tail emitted from a gain-switched 1540 nm multimode laser diode was linearly transformed into a 20 ps pulse with a substantially reduced tail.

© 2008 Optical Society of America

OCIS Codes
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(140.2020) Lasers and laser optics : Diode lasers
(320.5540) Ultrafast optics : Pulse shaping
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 6, 2008
Revised Manuscript: November 8, 2008
Manuscript Accepted: November 11, 2008
Published: November 17, 2008

Citation
Kenji Wada, Shuji Takamatsu, Hideyuki Watanebe, Tetsuya Matsuyama, and Hiromichi Horinaka, "Pulse-shaping of gain-switched pulse from multimode laser diode using fiber Sagnac interferometer," Opt. Express 16, 19872-19881 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-24-19872


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References

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