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Proceedings Article

Ge-codoped laser fibers for mitigating stimulated Brillouin scattering in high power fiber amplifiers

[+] Author Affiliations
Xin Chen, Ming-Jun Li, Anping Liu

Corning Inc. (USA)

Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860B (January 19, 2011); doi:10.1117/12.888050
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From Conference Volume 7986

  • Passive Components and Fiber-Based Devices VII
  • Perry P. Shum
  • Shanghai, China | December 08, 2010

abstract

Rare-earth doped fibers for high power fiber amplifiers normally have a small refractive index difference between the core and inner cladding, but have a larger core diameter than conventional telecom fibers. We take advantage of this feature as well as the difference between the optical and acoustic waveguides and proposed several fiber designs to mitigate Stimulated Brillouin Scattering (SBS) to produce higher output powers. The numerical modeling showed that an increase in SBS threshold by 3-5 dB can be achieved using Ge-codopant while maintaining diffraction limited beam quality. The study also highlights the need to take into account the effects of minor refractive index profile variation in evaluating SBS performance.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Xin Chen ; Ming-Jun Li and Anping Liu
"Ge-codoped laser fibers for mitigating stimulated Brillouin scattering in high power fiber amplifiers", Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860B (January 19, 2011); doi:10.1117/12.888050; http://dx.doi.org/10.1117/12.888050


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