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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1170–1172

Fiber coupler for mode selection and high-efficiency pump coupling

Qirong Xiao, Xiao Chen, Haichui Ren, Ping Yan, and Mali Gong  »View Author Affiliations

Optics Letters, Vol. 38, Issue 7, pp. 1170-1172 (2013)

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A pump/signal fiber coupler with functions of pump light coupling and high-order-mode suppression is reported. This coupler is composed of pump fibers and a double-clad fiber (DCF) with high pump-coupling efficiency. The core of DCF is microdeformed in the coupling region, which serves mode selection. Theoretical analysis and experimental results verify these functions. In the experiment, the pump-coupling and signal-transmitting efficiency of the coupler were 98% and 96%, respectively. This coupler can prevent mode distortion with fundamental mode launching, and improve the fiber laser beam quality with high-order-mode launching.

© 2013 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2340) Fiber optics and optical communications : Fiber optics components
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 21, 2012
Manuscript Accepted: February 22, 2013
Published: April 1, 2013

Qirong Xiao, Xiao Chen, Haichui Ren, Ping Yan, and Mali Gong, "Fiber coupler for mode selection and high-efficiency pump coupling," Opt. Lett. 38, 1170-1172 (2013)

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