Femtosecond pulse delivery using a chirped long-period grating of multi-mode fiber for mode conversion

被引：5
作者：
Yao, J. [1 ]
Zhan, L. [1 ]
Wang, Y. X. [1 ]
Li, H. G. [1 ]
Luo, S. Y. [1 ]
Xia, Y. X. [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Phys, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
来源：
JOURNAL OF MODERN OPTICS | 2010年 / 57卷 / 06期
基金：
中国国家自然科学基金;
关键词：
long-period fiber grating; fiber grating; multi-mode fiber; mode conversion; femtosecond pulse delivery; pulse propagation; temporal soliton; DISTORTION-FREE DELIVERY; ALL-FIBER; PROPAGATION; SENSITIVITY; LASER;
D O I：
10.1080/09500341003714130
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A period-chirped long-period fiber grating (CLPFG), using ordinary multi-mode fiber (MMF), for broadband mode conversion (60 nm bandwidth of coupling efficiency >90%) has been proposed. Through using such a MMF-CLPFG, a broad-spectrum pulse can be converted into LP02 for femtosecond pulse distortion-free delivery in MMF. The simulation shows that the pulse suffers less nonlinear distortion than that in a single-mode fiber. In addition, the negative pre-chirp introduced by MMF-CLPFG can offset the linear and positive SPM-induced frequency chirp and thus compress the pulse. Using this scheme, an initial 18 kW peak power 75 fs pulse distortion-free delivery in MMF has been numerically demonstrated.
引用
收藏
页码：485 / 491
页数：7
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