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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 27 — Dec. 19, 2011
  • pp: 26911–26916

Active Q-switching in an erbium-doped fiber laser using an ultrafast silicon-based variable optical attenuator

You Min Chang, Junsu Lee, Young Min Jhon, and Ju Han Lee  »View Author Affiliations

Optics Express, Vol. 19, Issue 27, pp. 26911-26916 (2011)

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Presented herein is the use of an ultrafast Si-based variable optical attenuator (VOA) as a Q-switch for rare earth-doped fiber lasers. The ultrafast VOA is based on a forward-biased p-i-n diode integrated with a ridge waveguide, which was originally designed and optimized for WDM channel power equalization in optical communication systems. By incorporating a Si-based VOA with a transient time of ~410 ns into an erbium-doped fiber-based Fabry-Perot cavity it has been shown that stable Q-switched pulses possessing a temporal width of less than ~86 ns can be readily obtained at a repetition rate of up to ~1 MHz. The laser’s peak power of ~38 W is shown to be obtainable at 20 kHz with a slope efficiency of ~21%.

© 2011 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3540) Lasers and laser optics : Lasers, Q-switched
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 8, 2011
Revised Manuscript: October 21, 2011
Manuscript Accepted: December 9, 2011
Published: December 16, 2011

You Min Chang, Junsu Lee, Young Min Jhon, and Ju Han Lee, "Active Q-switching in an erbium-doped fiber laser using an ultrafast silicon-based variable optical attenuator," Opt. Express 19, 26911-26916 (2011)

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