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Proceedings Paper

Numerical simulation on spectral compression of frequency-shifting femtosecond pulses in photonic crystal fiber
Author(s): S. N. Li; H. P. Li; Q. M. Wang; J. K. Liao; X. G. Tang; Y. Liu; Y. Z. Liu
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Paper Abstract

We present a numerical investigation of nonlinear propagation of femtosecond pulses in photonic crystal fibers (PCFs) by solving the generalized nonlinear Schrodinger equation. The PCFs have a second-order dispersion of -48 ps2/km, nonlinear coefficient of 115 W-1km-1, and third-order dispersion (TOD) ranging from 0.1 ps3/km to 1 ps3/km at 1550-nm wavelength. The simulation results show that efficient spectral compression of ultrashort pulses can be induced in the regime of soliton self-frequency shift (SSFS) in PCFs when the input pulse parameters satisfy the condition 0.9 ≤N ≤ 1.2 for the soliton order N. It is found that the output spectral width is dependent on the peak power of input pulse and the PCF length. A spectral-compression factor up to 2.2 can be achieved for 50-fs, 1550-nm solitons propagating through 10-m PCF with a TOD of 0.5 ps3/km, where the soliton wavelength shifted from 1550 nm to 1698 nm. The effect of initial pulse chirp on output spectral width can be negligible for large PCF length. Greater spectral-compression factor can be obtained using PCF with larger TOD value. This SSFS-based spectral-compression scheme offers much promise for generation of narrow line-width tunable light sources in photonic applications.

Paper Details

Date Published: 5 December 2011
PDF: 6 pages
Proc. SPIE 8198, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 81980O (5 December 2011); doi: 10.1117/12.906297
Show Author Affiliations
S. N. Li, Univ. of Electronic Science and Technology of China (China)
H. P. Li, Univ. of Electronic Science and Technology of China (China)
Q. M. Wang, Univ. of Electronic Science and Technology of China (China)
J. K. Liao, Univ. of Electronic Science and Technology of China (China)
X. G. Tang, Univ. of Electronic Science and Technology of China (China)
Y. Liu, Univ. of Electronic Science and Technology of China (China)
Y. Z. Liu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 8198:
2011 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration
Xuping Zhang; P. K. Alex Wai; Hai Ming, Editor(s)

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