Study on the bandwidth broadening of optical parametric amplifier based on conventional dispersion-shifted fiber

LI Jian-ping; LUO Bin; PAN Wei; LU Jing; WANG Xin; LUO Guang-jun

In order to broaden the amplification bandwidth of conventional dispersion-shifted fiber(DSF) double-pumped fiber optical parametric amplifier(FOPA),a cascade configuration with periodic dispersion compensation composed of conventional DSF and single-mode fiber(SMF) was proposed.Utilizing the configuration,the phase-mismatch caused by the negative fourth-order dispersion of DSF can be reduced by the positive second-order dispersion of SMF,thus the amplification bandwidth can be broadened efficiently.Utilizing the four-wave-mixing coupling equations,the double FOPA was studied.Through simulation,a 69nm bandwidth after broadening was obtained.The results show,for a fixed DSF fiber length,using the optimal SMF length to compensate the dispersion,the phase-mismatch induced by the fourth-order dispersion of DSF can be efficiently reduced and the amplification bandwidth can be broadened.It further shows that a larger bandwidth can be obtained by using multi-segment compensation.

Corresponding author: LUO Bin, bluo@home.swjtu.edu.cn;

1. School of Information Science & Technology, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2006-06-14

Accepted Date: 2006-12-12

Available Online: 2007-08-25

Abstract: In order to broaden the amplification bandwidth of conventional dispersion-shifted fiber(DSF) double-pumped fiber optical parametric amplifier(FOPA),a cascade configuration with periodic dispersion compensation composed of conventional DSF and single-mode fiber(SMF) was proposed.Utilizing the configuration,the phase-mismatch caused by the negative fourth-order dispersion of DSF can be reduced by the positive second-order dispersion of SMF,thus the amplification bandwidth can be broadened efficiently.Utilizing the four-wave-mixing coupling equations,the double FOPA was studied.Through simulation,a 69nm bandwidth after broadening was obtained.The results show,for a fixed DSF fiber length,using the optimal SMF length to compensate the dispersion,the phase-mismatch induced by the fourth-order dispersion of DSF can be efficiently reduced and the amplification bandwidth can be broadened.It further shows that a larger bandwidth can be obtained by using multi-segment compensation.

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Reference (8)

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Study on the bandwidth broadening of optical parametric amplifier based on conventional dispersion-shifted fiber

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