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Proceedings Paper

Side pumping of double clad fiber laser with a nonfusional fiber coupler
Author(s): Jianqiu Xu; Junhua Lu; Jianren Lu; Ken-ichi Ueda
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Paper Abstract

A non-fusional fiber coupler is demonstrated for the high power double clad fiber lasers with optical adhesive technique. The fiber coupler is constructed by polishing a non-doped single-clad fiber at a bevel angle and then adhere to the doped double-clad fiber with an optical adhesive. The pump light is launched through the single-clad fiber to the doped double-clad fiber. The polished angle for the optimal coupling depends on the fiber numerical aperture and coupling efficiency of 90 percent can be achieved. The bend effects on the coupling efficiency is investigated and find that the degrade of coupling efficiency is very sensitive to distance between the bend to the coupling point. Finally, laser radiation is demonstrate with a Nd-doped double clad fiber in low pump regime.

Paper Details

Date Published: 29 October 2001
PDF: 6 pages
Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); doi: 10.1117/12.446553
Show Author Affiliations
Jianqiu Xu, Univ. of Electro-Communications (Japan)
Junhua Lu, Univ. of Electro-Communications (Japan)
Jianren Lu, Univ. of Electro-Communications (Japan)
Ken-ichi Ueda, Univ. of Electro-Communications (Japan)

Published in SPIE Proceedings Vol. 4594:
Design, Fabrication, and Characterization of Photonic Devices II
Marek Osinski; Soo-Jin Chua; Akira Ishibashi, Editor(s)

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