Spectral compression of femtosecond pulses in photonic crystal fiber with anomalous dispersion

H. P. Li; X. J. Zhang; J. K. Liao; X. G. Tang; Y. Liu; Y. Z. Liu

doi:10.1117/12.852965

1 December 2009 Spectral compression of femtosecond pulses in photonic crystal fiber with anomalous dispersion

H. P. Li, X. J. Zhang, J. K. Liao, X. G. Tang, Y. Liu, Y. Z. Liu

Proceedings Volume 7630, Passive Components and Fiber-based Devices VI; 76301I (2009) https://doi.org/10.1117/12.852965
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

We present a numerical investigation of nonlinear propagation of chirp-free femtosecond pulses at 1550-nm wavelength in a nonlinear photonic crystal fiber (PCF) with anomalous dispersion. The PCF has a second-order dispersion of - 8.67 ×10⁴ fs²/m, third-order dispersion of 2.8 x 10⁵ fs³/m and nonlinear coefficient of 11 W^-1km^-1 at 1550 nm. The simulation results show that efficient spectral compression of unchirped ultrashort pulses is induced in PCF when the input pulse parameters satisfy the condition 0.6< N<0.7for the soliton number N. It is found that the compressed spectral width is strongly dependent on the initial peak power and propagation length of the incident pulse. A compression factor up to 7 can be achieved. With the PCF, efficient spectral compression can take place in the wavelength range of 1530 ~ 1570 nm covering the C-band. This spectral-compression scheme offers much promise for laser spectroscopy, optical information technologies and high-power fiber-laser systems.

Citation Download Citation

H. P. Li, X. J. Zhang, J. K. Liao, X. G. Tang, Y. Liu, and Y. Z. Liu "Spectral compression of femtosecond pulses in photonic crystal fiber with anomalous dispersion", Proc. SPIE 7630, Passive Components and Fiber-based Devices VI, 76301I (1 December 2009); https://doi.org/10.1117/12.852965

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