Author(s): Zou, SZ (Zou, Shuzhen); Yu, HJ (Yu, Haijuan); Zuo, JX (Zuo, Jiexi); Xu, S (Xu, Shuang); Ning, CY (Ning, Chaoyu); Zhao, PF (Zhao, Pengfei); He, CJ (He, Chaojian); Lin, XC (Lin, Xuechun)

Source: JOURNAL OF LIGHTWAVE TECHNOLOGY Volume: 39 Issue: 7 Pages: 2130-2135 DOI: 10.1109/JLT.2020.3045510 Published: APR 1 2021

Abstract: We present the design and fabrication of a 4 x 1 fiber combiner with low brightness loss. The effective area ratio (AR) of light transmission was first introduced to estimate the brightness loss. A square core fiber was used as the output fiber of the fiber combiner to achieve a high AR. The adiabatic criterion for tapering multimode fibers was investigated to obtain the structure parameters required for the fabrication. We used an auxiliary fiber of appropriate size to achieve a regular squared fiber bundle and improve bundle cutting and splicing quality. The fiber combiner yielded a high average power transmission efficiency of 97.8% when the brightness ratio was 1.05. In addition, the output power of 1030 W was obtained by combining two LDs. This type of fiber combiner can produce multi-kilowatts laser by combining high power LDs or fiber lasers. And it can be flexibly applied in laser welding, laser cladding, and laser cleaning.

Accession Number: WOS:000628977000027

ISSN: 0733-8724

eISSN: 1558-2213

Full Text: https://ieeexplore.ieee.org/document/9296837