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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 14 — Jul. 15, 2008
  • pp: 1602–1604

Stable and spacing-adjustable multiwavelength Raman fiber laser based on mixed- cascaded phosphosilicate fiber Raman linear cavity

Zhengqian Luo, Zhiping Cai, Jiafu Huang, Chenchun Ye, Chaohong Huang, Huiying Xu, and Wen-De Zhong  »View Author Affiliations


Optics Letters, Vol. 33, Issue 14, pp. 1602-1604 (2008)
http://dx.doi.org/10.1364/OL.33.001602


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Abstract

A novel multiwavelength Raman fiber laser based on the mixed-cascaded Stokes effects of phosphosilicate fiber is proposed and demonstrated experimentally. By using stimulated Raman scattering of both P 2 O 5 and Si O 2 along 1 km phosphosilicate fiber pumped with a 1064 nm double-clad fiber laser, the mixed-cascaded Raman linear cavity is formed by a pair of fiber Bragg gratings at 1239 nm , a polarization-maintaining fiber (PMF) Sagnac loop filter, and a conventional optical loop mirror. Up to 15-wavelength stable oscillations around 1320 nm are obtained with a wavelength spacing of 0.44 nm and power nonuniformity of less than 4 dB . By changing the length of the PMF in the Sagnac loop filter from 10 to 5.5 m , the wavelength spacing is adjustable from 0.44 to 0.8 nm . The extinction ratio of the laser is more than 30 dB . Excellent stability is also observed with a peak power fluctuation of less than 0.8 dB in 1 h .

© 2008 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3510) Lasers and laser optics : Lasers, fiber
(290.5910) Scattering : Scattering, stimulated Raman

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 22, 2008
Revised Manuscript: June 10, 2008
Manuscript Accepted: June 11, 2008
Published: July 14, 2008

Citation
Zhengqian Luo, Zhiping Cai, Jiafu Huang, Chenchun Ye, Chaohong Huang, Huiying Xu, and Wen-De Zhong, "Stable and spacing-adjustable multiwavelength Raman fiber laser based on mixed- cascaded phosphosilicate fiber Raman linear cavity," Opt. Lett. 33, 1602-1604 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-14-1602


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