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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 6, Iss. 11 — Nov. 1, 2008
  • pp: 845–847

Narrow-linewidth single-polarization frequency-modulated Er-doped fiber ring laser

Pan Ou, Yudong Jia, Bin Cao, Chunxi Zhang, Shuling Hu, and Di Feng  »View Author Affiliations


Chinese Optics Letters, Vol. 6, Issue 11, pp. 845-847 (2008)


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Abstract

We demonstrate a 1550-nm narrow-linewidth fiber ring laser with stable single polarization by using single-mode Er-doped fiber as active fiber and saturable absorber. A polarization-maintaining circulator is used to acquire single-polarization laser light with the degree of polarization of 99.8%-99.9%. The linewidth measured using a delayed self-heterodyne method is less than 0.5 kHz. Frequency of the fiber laser can be modulated by driving the waveguide phase modulator with proper voltage. A Mach-Zehnder interferometer with the optical path difference between two arms of about 36 km is used to study the long-distance coherent detection of the fiber laser for frequency-modulated continuous-wave application.

© 2008 Chinese Optics Letters

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3560) Lasers and laser optics : Lasers, ring

Citation
Pan Ou, Yudong Jia, Bin Cao, Chunxi Zhang, Shuling Hu, and Di Feng, "Narrow-linewidth single-polarization frequency-modulated Er-doped fiber ring laser," Chin. Opt. Lett. 6, 845-847 (2008)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-6-11-845

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