Limitation on Effective Area of Bent Large-Mode-Area Leakage Channel Fibers

被引：28

作者：

Saitoh, Kunimasa ^{[1
]}

Varshney, Shailendra ^{[2
]}

Sasaki, Kaori ^{[1
]}

Rosa, Lorenzo ^{[3
]}

Pal, Mrinmay ^{[4
]}

Paul, Mukul Chandra ^{[4
]}

Ghosh, Debashri ^{[4
]}

Bhadra, Shyamal Kumar ^{[4
]}

Koshiba, Masanori ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Sapporo, Hokkaido 0600814, Japan

[2] Max Planck Inst Sci Light, D-91058 Erlangen, Germany

[3] Swinburne Univ Technol, Ctr Microphoton, Melbourne, Vic 3122, Australia

[4] CSIR, Fibre Opt Div, Cent Glass & Ceram Res Inst, Kolkata 700032, India

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2011年 / 29卷 / 17期

基金：

日本科学技术振兴机构;

关键词：

Effectively single mode (ESM); fiber lasers; large-mode-area (LMA) fibers; leakage channel fibers (LCFs); microstructured optical fibers (MOFs); PHOTONIC CRYSTAL FIBERS; LOW BENDING LOSS; OPTICAL-FIBERS; OPERATION; PROPAGATION; MU-M(2); DESIGN; POWER;

D O I：

10.1109/JLT.2011.2161603

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate the bending characteristics of leakage channel fibers (LCFs) to achieve large mode area (LMA) and effectively single-mode operation with a practically allowable bending radius for compact Yb-doped fiber applications. Through numerical simulations, carried by the full-vectorial finite-element method, we present the limitations on the effective area of LCFs under bent condition and compare their limits with that of conventional step-index LMA fibers. Due to a better controllability of the low numerical aperture and a large value of the differential bending loss (similar to 20 dB/m) between the fundamental and higher order modes in LCFs, the LMA of similar to 500 mu m(2) (core diameter of similar to 36 mu m) at 1064 nm can be achieved when the optimized LCF is bent into a 10 cm bending radius.

引用

页码：2609 / 2615

页数：7

共 22 条

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