Modified Raman Response Model and Supercontinuum Generation in Flat Dispersion Photonic Crystal Fiber with Two-Zero Dispersion Wavelengths
WANG He-Lin1, YANG Ai-Jun1**, LENG Yu-Xin2, WANG Cheng2
1College of Science, Zhejiang University of Technology, Hangzhou 310023 2State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Modified Raman Response Model and Supercontinuum Generation in Flat Dispersion Photonic Crystal Fiber with Two-Zero Dispersion Wavelengths
WANG He-Lin1, YANG Ai-Jun1**, LENG Yu-Xin2, WANG Cheng2
1College of Science, Zhejiang University of Technology, Hangzhou 310023 2State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
摘要The generation mechanisms of supercontinuum (SC) and the effect of the modified Raman model on SC are further analyzed in a flat dispersion photonic crystal fiber (PCF) with two-zero dispersion wavelengths (TZDWs) by introducing an accurate Raman response function in the scalar nonlinear Schrödinger equation. The results show that the introduction of Boson peak in the modified Raman gain model not only results in much rapider broadening of SC but also promotes more pump pulse energy transferred to the short wavelength region, which is related to stimulated Raman scattering. Moreover, SC generated from the PCF splits into two spectral bands, and their spectral peaks rapidly separate and broaden with the increase of incident power. Double-band central wavelengths are finally located at about 850 nm and 1220 nm. The pumping energy depletion phenomenon occurs. The simulated results from the modified Raman model are in better agreement with the experimental results than that from the single-Lorentzian model.
Abstract：The generation mechanisms of supercontinuum (SC) and the effect of the modified Raman model on SC are further analyzed in a flat dispersion photonic crystal fiber (PCF) with two-zero dispersion wavelengths (TZDWs) by introducing an accurate Raman response function in the scalar nonlinear Schrödinger equation. The results show that the introduction of Boson peak in the modified Raman gain model not only results in much rapider broadening of SC but also promotes more pump pulse energy transferred to the short wavelength region, which is related to stimulated Raman scattering. Moreover, SC generated from the PCF splits into two spectral bands, and their spectral peaks rapidly separate and broaden with the increase of incident power. Double-band central wavelengths are finally located at about 850 nm and 1220 nm. The pumping energy depletion phenomenon occurs. The simulated results from the modified Raman model are in better agreement with the experimental results than that from the single-Lorentzian model.
WANG He-Lin;YANG Ai-Jun**;LENG Yu-Xin;WANG Cheng
. Modified Raman Response Model and Supercontinuum Generation in Flat Dispersion Photonic Crystal Fiber with Two-Zero Dispersion Wavelengths[J]. 中国物理快报, 2011, 28(3): 34206-034206.
WANG He-Lin, YANG Ai-Jun**, LENG Yu-Xin, WANG Cheng
. Modified Raman Response Model and Supercontinuum Generation in Flat Dispersion Photonic Crystal Fiber with Two-Zero Dispersion Wavelengths. Chin. Phys. Lett., 2011, 28(3): 34206-034206.
[1] Alfano R R and Shapiro S L 1970 Phys. Rev. Lett. 24 592
[2] Ashcom J B et al 2006 J. Opt. Soc. Am. B 23 2317
[3] Skupin S et al 2005 International Conference on Nonlinear Guided Waves and Their Applications paper FC5
[4] Zhang R et al 2006 Opt. Express 14 6800
[5] Genty G et al 2007 Opt. Express 15 5382
[6] Yin L, Lin Q and Agrawal G P 2007 Opt. Lett. 32 391
[7] Gaeta A L 2002 Opt. Lett. 27 924
[8] Coen S et al 2002 J. Opt. Soc. Am. B 19 753
[9] Shreiber T 2003 Opt. Commun. 228 71
[10] Wang H L et al 2009 Laser Phys. 19 993
[11] Wang H L et al 2009 Chin. Phys. Lett. 26 084201
[12] Wang H L et al 2009 Chin. Phys. B 18 5375
[13] Hu M L et al 2004 Acta Phys. Sin. 53 4243 (in Chinese)
[14] Sun X W et al 2007 Acta Photon. Sin. 36 51 (in Chinese)
[15] Lin Q and Agrawal G P 2006 Opt. Lett. 31 3086
[16] Agrawal G P 2004 Nonlinear Fiber Optics (San Diego: Academic)
[17] http://www.crystal-fibre.com/datasheets/NL-1050-ZERO-2
[18] Frosz M H et al 2005 Optics Express 13 6181
2011, Vol. 28 
