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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 32 — Nov. 10, 2012
  • pp: 7745–7749

Portable fiber group velocity test method with a gain-switched laser

Ye Feng, Lin Zou, Yi Shan Wang, Wei Zhao, Zhi Yang, Wei Zhang, and Xiao Hong Hu  »View Author Affiliations

Applied Optics, Vol. 51, Issue 32, pp. 7745-7749 (2012)

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A portable method of group velocity measurement is proposed based on a self-seeded gain-switched laser. The calculated group velocity in the optical fiber is obtained by measuring the round-trip frequencies of the gain-switched laser diode with different external cavities, and only a 2 m long fiber is needed. The measurement can be accomplished without oscilloscope or optical spectrum analyzer. The error associated with this test is within 0.65%, which is limited by the jitter of the voltage-controlled oscillator. Its spectrum resolution is 0.1 nm.

© 2012 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2400) Fiber optics and optical communications : Fiber properties
(140.5960) Lasers and laser optics : Semiconductor lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 14, 2012
Revised Manuscript: October 10, 2012
Manuscript Accepted: October 12, 2012
Published: November 5, 2012

Ye Feng, Lin Zou, Yi Shan Wang, Wei Zhao, Zhi Yang, Wei Zhang, and Xiao Hong Hu, "Portable fiber group velocity test method with a gain-switched laser," Appl. Opt. 51, 7745-7749 (2012)

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