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Proceedings Paper

The study of the thermally expanded core technique in end-pumped (N+1)×1 type combiner
Author(s): Juan Wu; Yinhong Sun; Yanshan Wang; Tenglong Li; Yujun Feng; Yi Ma
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Paper Abstract

Tapering will raise the signal loss in an end-pumped (N+1)×1 type combiner. In this paper, the Thermally Expanded Core (TEC) technique is used in the signal loss optimization experiment with the tapering ratio of the pump combiner is 0.6. The experimental results indicate that the coupling efficiency of the 1.55μm signal light increases from 81.1% to 86.6%, after being heated 10 minutes at the homo-waist region of the tapered signal fiber with an 8mm wide hydroxygen flame. Detail analysis shows that the TEC technique can both reduce the loss of the LP01 mode and the LP11 mode in the signal fiber.

Paper Details

Date Published: 3 February 2015
PDF: 7 pages
Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92550I (3 February 2015); doi: 10.1117/12.2065298
Show Author Affiliations
Juan Wu, China Academy of Engineering Physics (China)
Yinhong Sun, China Academy of Engineering Physics (China)
Yanshan Wang, China Academy of Engineering Physics (China)
Tenglong Li, China Academy of Engineering Physics (China)
Yujun Feng, China Academy of Engineering Physics (China)
Yi Ma, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 9255:
XX International Symposium on High-Power Laser Systems and Applications 2014
Chun Tang; Shu Chen; Xiaolin Tang, Editor(s)

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