Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles

doi:10.1088/1674-1056/21/9/094217

中国物理B ›› 2012, Vol. 21 ›› Issue (9): 94217-094217.doi: 10.1088/1674-1056/21/9/094217

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles

赵佳生^a, 李磐^a, 陈晓东^a, 冯素娟^a, 毛庆和^{a b}

a Anhui Provincial Key Laboratory of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
b University of Science and Technology of China, Hefei 230026, China

收稿日期:2012-01-13 修回日期:2012-02-25 出版日期:2012-08-01 发布日期:2012-08-01
基金资助:
Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA030203) and the National Basic Research Program of China (Grant No. 2007CB936603).

Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles

Zhao Jia-Sheng (赵佳生)^a, Li Pan (李磐)^a, Chen Xiao-Dong (陈晓东)^a, Feng Su-Juan (冯素娟)^a, Mao Qing-He (毛庆和)^{a b}

a Anhui Provincial Key Laboratory of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
b University of Science and Technology of China, Hefei 230026, China

Received:2012-01-13 Revised:2012-02-25 Online:2012-08-01 Published:2012-08-01
Contact: Mao Qing-He E-mail:mqinghe@aiofm.ac.cn
Supported by:
Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA030203) and the National Basic Research Program of China (Grant No. 2007CB936603).

摘要/Abstract

摘要： The evolutions of the pulses propagating in decreasing and increasing gain distributed fiber amplifiers with finite gain bandwidths are investigated by simulating with the nonlinear Schrödinger equation. The results show that the parabolic pulse propagations in both the decreasing and the increasing gain amplifiers are restricted by the finite gain bandwidth. For a given input pulse, by choosing small initial gain coefficient and gain variation rate, the whole gain for the pulse amplification limited by the gain bandwidth may be higher, which is helpful to the enhancement of the output linearly chirped pulse energy. Compared to the decreasing gain distributed fiber amplifier, the increasing gain distributed amplifier may be more conducive to suppress the pulse spectral broadening and increase the critical amplifier length for achieving a larger output linearly chirped pulse energy.

关键词: finite gain bandwidth, parabolic pulse, linearly chirped pulse energy

Abstract: The evolutions of the pulses propagating in decreasing and increasing gain distributed fiber amplifiers with finite gain bandwidths are investigated by simulating with the nonlinear Schrödinger equation. The results show that the parabolic pulse propagations in both the decreasing and the increasing gain amplifiers are restricted by the finite gain bandwidth. For a given input pulse, by choosing small initial gain coefficient and gain variation rate, the whole gain for the pulse amplification limited by the gain bandwidth may be higher, which is helpful to the enhancement of the output linearly chirped pulse energy. Compared to the decreasing gain distributed fiber amplifier, the increasing gain distributed amplifier may be more conducive to suppress the pulse spectral broadening and increase the critical amplifier length for achieving a larger output linearly chirped pulse energy.

Key words: finite gain bandwidth, parabolic pulse, linearly chirped pulse energy

中图分类号: (Ultrafast processes; optical pulse generation and pulse compression)

42.65.Re

42.65.-k (Nonlinear optics)

赵佳生, 李磐, 陈晓东, 冯素娟, 毛庆和. Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles[J]. 中国物理B, 2012, 21(9): 94217-094217.

Zhao Jia-Sheng (赵佳生), Li Pan (李磐), Chen Xiao-Dong (陈晓东), Feng Su-Juan (冯素娟), Mao Qing-He (毛庆和). Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles[J]. Chin. Phys. B, 2012, 21(9): 94217-094217.

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Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles

Influences of finite gain bandwidth on pulse propagating in parabolic fiber amplifiers with distributed gain profiles

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