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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 14 — May. 10, 2010
  • pp: 2653–2657

Waveband-tunable multiwavelength erbium-doped fiber laser

Hermann Lin  »View Author Affiliations

Applied Optics, Vol. 49, Issue 14, pp. 2653-2657 (2010)

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A waveband-tunable multiwavelength erbium-doped fiber laser based on a novel integrated structure of nonlinear polarization rotation and an unbalanced in-line Sagnac interferometer is proposed and demonstrated. An ultrabroadband lasing spectrum with 140 wavelength lasing peaks periodically distributed from 1563 to 1612.5 nm accompanied by a lasing linewidth of 0.112 nm , a free spectral range (FSR) of 0.32 nm , and a signal-to-noise ratio (SNR) of 20 dB has been achieved. A laser with high-wavelength lasing and waveband tunability was also achieved by merely adjusting the polarization controllers. The wavebands can be tuned from 1567 to 1606 nm continuously. Thirty-one lasing wavelengths in a 3 dB flattened spectrum has been achieved with a SNR of 48 dB , a linewidth of 0.03 nm , and a FSR of 0.32 nm . Good stability of the laser operating at room temperature has been verified by using an optical spectrum analyzer to measure every 2 min for a half-hour.

© 2010 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2410) Fiber optics and optical communications : Fibers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3560) Lasers and laser optics : Lasers, ring
(190.4370) Nonlinear optics : Nonlinear optics, fibers

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 25, 2010
Revised Manuscript: April 6, 2010
Manuscript Accepted: April 9, 2010
Published: May 4, 2010

Hermann Lin, "Waveband-tunable multiwavelength erbium-doped fiber laser," Appl. Opt. 49, 2653-2657 (2010)

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