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A novel method of bandwidth enhancement of a chaotic carrier from a semiconductor laser transmitter is studied by cross-phase modulation (XPM). And a physical model of laser dynamics is presented under the condition of XPM effect of optical fiber path. A frequency detuning formula with optical dual-feedback and XPM effect is deduced. The nonlinear phase shift arisen from XPM effect impacts on the gain and bandwidth enhancement factor of the laser. The second order nonlinear effect of the fiber enriches the varieties in the amplitude and the phase of the laser while the nonlinear phase shift produces a lot of new frequencies, which spread the bandwidth. Numerical results reveal that, with XPM effect, the new bandwidth is the quadruple of the bandwidth without XPM effect, and the relaxation oscillation frequency of the chaotic laser is increased to 285 times that of the laser without XPM effect. It is found that the enhancement of the chaotic bandwidth depends evidently on the optical fiber length, the power input into the optical fiber, the mirror reflectance and the second order nonlinear coefficient.
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Keywords:
- chaos /
- semiconductor laser /
- cross-phase modulation /
- bandwidth
[1] ［1］Roy R, Thornburg K S 1994 Phys. Rev. Lett. 72 2009
[2] ［2］Van Wiggeren G D, Roy R 1998 Science 279 1198
[3] ［3］Wu L, Zhu S Q 2003 Phys. Lett. A 308 157
[4] ［4］Yan S L 2007 Chin. Phys. B 16 3271
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[6] ［6］Zhou Y, Wu L, Zhu S Q 2005 Chin. Phys. B 14 2196
[7] ［7］Zhang F, Chu P L 2003 J. Lightwave Technol. 21 3334
[8] ［8］Li X F, Pan W, Ma D, Luo B, Zhang W L, Xiong Y 2006 Acta Phys. Sin. 55 5094 (in Chinese) ［李孝峰、潘炜、马冬、罗斌、张伟利、熊悦 2006 55 5094］
[9] ［9］Yan S L 2008 Acta Phys. Sin. 57 2819 (in Chinese) ［颜森林 2008 57 2819］
[10] ］Wu J G, Wu Z M, Lin X D, Zhang Y, Zhong D Z, Xia G Q 2005 Acta Phys. Sin. 54 4169 (in Chinese) ［吴加贵、吴正茂、林晓东、张毅、钟东洲、夏光琼 2005 54 4169］
[11] ］Argyris A, Syvridis D, Larger L, Lodi V A, Colet P, Fischer I, Ojalvo J G, Mirasso C R, Pesquera L, Shore K A 2005 Nature 438 343
[12] ］Lodi V A, Benedetti M, Merlo S, Norgia M, Provinzano B 2005 2 IEEE Photon. Technol. Lett. 17 1995
[13] ］Kusumoto K, Ohtsubo J 2002 Opt. Lett. 27 989
[14] ］Paul J, Lee M W, Shore K A 2005 IEEE Photon. Technol. Lett. 17 920
[15] ］Takiguchi Y, Ohyagi K, Ohtsubo J 2003 Opt. Lett. 28 319
[16] ］Murakami A, Shore K A 2005 Phys. Rev. A 72 053810
[17] ］Wang Y C, Zhang G W, Wang A B, Wang B J, Li Y L, Guo P 2007 Acta Phys. Sin. 56 4372 (in Chinese) ［王云才、张耕玮、王安帮、王冰洁、李艳丽、郭萍 2007 56 4372］
[18] ］Kong L Q, Wang A B, Wang H H, Wang Y C 2007 Acta Phys. Sin. 57 2266 (in Chinese) ［孔令琴、王安帮、王海红、王云才 2007 57 2266］
[19] ］Liu X M, Yang X, Lu F, Ng J, Zhou X, Lu C 2005 Opt. Express 13 142
[20] ］Liu X M, Wang T, Shu C, Wang L R, Lin A, Lu K Q, Zhang T Y, Zhao W 2008 Laser Phys. 18 1357
[21] ］Agrawal G P 1989 Nonlinear Fiber Optics (San Diego: Academic)
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[1] ［1］Roy R, Thornburg K S 1994 Phys. Rev. Lett. 72 2009
[2] ［2］Van Wiggeren G D, Roy R 1998 Science 279 1198
[3] ［3］Wu L, Zhu S Q 2003 Phys. Lett. A 308 157
[4] ［4］Yan S L 2007 Chin. Phys. B 16 3271
[5] ［5］Ramos R V, Souza R F 2001 Opt. Cummun. 22 90
[6] ［6］Zhou Y, Wu L, Zhu S Q 2005 Chin. Phys. B 14 2196
[7] ［7］Zhang F, Chu P L 2003 J. Lightwave Technol. 21 3334
[8] ［8］Li X F, Pan W, Ma D, Luo B, Zhang W L, Xiong Y 2006 Acta Phys. Sin. 55 5094 (in Chinese) ［李孝峰、潘炜、马冬、罗斌、张伟利、熊悦 2006 55 5094］
[9] ［9］Yan S L 2008 Acta Phys. Sin. 57 2819 (in Chinese) ［颜森林 2008 57 2819］
[10] ］Wu J G, Wu Z M, Lin X D, Zhang Y, Zhong D Z, Xia G Q 2005 Acta Phys. Sin. 54 4169 (in Chinese) ［吴加贵、吴正茂、林晓东、张毅、钟东洲、夏光琼 2005 54 4169］
[11] ］Argyris A, Syvridis D, Larger L, Lodi V A, Colet P, Fischer I, Ojalvo J G, Mirasso C R, Pesquera L, Shore K A 2005 Nature 438 343
[12] ］Lodi V A, Benedetti M, Merlo S, Norgia M, Provinzano B 2005 2 IEEE Photon. Technol. Lett. 17 1995
[13] ］Kusumoto K, Ohtsubo J 2002 Opt. Lett. 27 989
[14] ］Paul J, Lee M W, Shore K A 2005 IEEE Photon. Technol. Lett. 17 920
[15] ］Takiguchi Y, Ohyagi K, Ohtsubo J 2003 Opt. Lett. 28 319
[16] ］Murakami A, Shore K A 2005 Phys. Rev. A 72 053810
[17] ］Wang Y C, Zhang G W, Wang A B, Wang B J, Li Y L, Guo P 2007 Acta Phys. Sin. 56 4372 (in Chinese) ［王云才、张耕玮、王安帮、王冰洁、李艳丽、郭萍 2007 56 4372］
[18] ］Kong L Q, Wang A B, Wang H H, Wang Y C 2007 Acta Phys. Sin. 57 2266 (in Chinese) ［孔令琴、王安帮、王海红、王云才 2007 57 2266］
[19] ］Liu X M, Yang X, Lu F, Ng J, Zhou X, Lu C 2005 Opt. Express 13 142
[20] ］Liu X M, Wang T, Shu C, Wang L R, Lin A, Lu K Q, Zhang T Y, Zhao W 2008 Laser Phys. 18 1357
[21] ］Agrawal G P 1989 Nonlinear Fiber Optics (San Diego: Academic)
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