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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 17 — Aug. 26, 2013
  • pp: 20052–20061

Root cause analysis and solution to the degradation of wavelength division multiplexing (WDM) couplers in high power fiber amplifier system

Xiang Peng, Kyungbum Kim, Xinhua Gu, Michael Mielke, Stephen Jennings, Andy Rider, Norman Fisher, Toby Woodbridge, Rene Dionne, and Francois Trepanier  »View Author Affiliations

Optics Express, Vol. 21, Issue 17, pp. 20052-20061 (2013)

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In the evaluation a fused biconical taper 1480/1580 nm WDM’s ability to handle high power cascaded Raman laser throughput (>100 W) a significant degradation in performance was observed. A systematic root cause investigation was conducted and it is experimentally confirmed that the WDM degradation was caused by an interaction between the high power 1480 nm line, an out-of-band Stokes line, and the -OH content of the glass optical fiber. Slanted fiber Bragg grating (SFBG) was introduced to filter out the 1390 nm out-of-band Stokes line in an attempt to avoid this interaction. Ultimately a series of tests were conducted and it was confirmed that the addition of a 1390 nm SFBG in between a high power Raman laser and the high power WDM has successfully prevented the degradation which therefore allowed the continued high power operation of the WDM. NAVAIR Public Release SPR 2013-469 Distribution Statement A-“Approved for Public release; distribution is unlimited”.

© 2013 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 4, 2013
Revised Manuscript: July 22, 2013
Manuscript Accepted: August 2, 2013
Published: August 19, 2013

Xiang Peng, Kyungbum Kim, Xinhua Gu, Michael Mielke, Stephen Jennings, Andy Rider, Norman Fisher, Toby Woodbridge, Rene Dionne, and Francois Trepanier, "Root cause analysis and solution to the degradation of wavelength division multiplexing (WDM) couplers in high power fiber amplifier system," Opt. Express 21, 20052-20061 (2013)

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