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Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3354–3356

C- and L-band tunable fiber ring laser using a two-taper Mach–Zehnder interferometer filter

Xiaozhen Wang, Yi Li, and Xiaoyi Bao  »View Author Affiliations

Optics Letters, Vol. 35, Issue 20, pp. 3354-3356 (2010)

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A stable C- and L-band tunable fiber ring laser, using a two-taper Mach–Zehnder interferometer (MZI) as a filter, is proposed and demonstrated experimentally. One of the two taper waists is mechanically bent to tune the laser wavelength. Being amplified by an L-band erbium-doped fiber amplifier and an erbium-doped fiber, respectively, the fiber ring laser has a full L-band ( 1564 1605 nm ) and C-band ( 1550 1565 nm ) tuning range with a side-mode suppression ratio as high as 50 dB . The laser linewidth and the minimum tuning step are related to the MZI’s cavity length. It was also found that thermal annealing relieved the internal stresses of the tapers and greatly improved the laser performance.

© 2010 Optical Society of America

OCIS Codes
(140.3600) Lasers and laser optics : Lasers, tunable
(230.0230) Optical devices : Optical devices

ToC Category:
Optical Devices

Original Manuscript: June 10, 2010
Revised Manuscript: August 31, 2010
Manuscript Accepted: September 1, 2010
Published: October 8, 2010

Xiaozhen Wang, Yi Li, and Xiaoyi Bao, "C- and L-band tunable fiber ring laser using a two-taper Mach–Zehnder interferometer filter," Opt. Lett. 35, 3354-3356 (2010)

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