Side pumping of double clad fiber laser with a nonfusional fiber coupler

Jianqiu Xu; Junhua Lu; Jianren Lu; Ken-ichi Ueda

doi:10.1117/12.446553

29 October 2001 Side pumping of double clad fiber laser with a nonfusional fiber coupler

Jianqiu Xu, Junhua Lu, Jianren Lu, Ken-ichi Ueda

Proceedings Volume 4594, Design, Fabrication, and Characterization of Photonic Devices II; (2001) https://doi.org/10.1117/12.446553
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

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.

Citation Download Citation

Jianqiu Xu, Junhua Lu, Jianren Lu, and Ken-ichi Ueda "Side pumping of double clad fiber laser with a nonfusional fiber coupler", Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); https://doi.org/10.1117/12.446553

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