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Based on a delayed mutually coupled system consisting of two semiconductor lasers (SL) with different injection currents, the influences of the asymmetric bias currents of two SLs and the frequency detuning Δf (Δf=f1-f2, where f1 and f2 are the free frequencies of SL1 and SL2 respectively) on synchronization performance have been investigated experimentally. The results show that for the case of the two SLs with identical free oscillation frequencies, the mutually coupled system can achieve excellent chaos synchronization under relatively large asymmetrical injection currents. Furthermore, the frequency detuning, controlled by adjusting the temperature of one of the two SLs, has an obvious influence on synchronization performance. For the case of the SL1 biased at a relatively much larger current than that of SL2, the synchronization performance will degrade with the increase of the positive frequency detuning (f1>f2), while the synchronization performance can be further improved with suitable negative frequency detuning. The simulated results are basically consistent with experimental results.
[1] Pecora L M, Carroll T L 1990 Phys. Rev. Lett. 64 821
[2] Sivaprakasam S, Shore K A 1999 Opt. Lett. 24 466
[3] Rogister F, Locquet A, Pieroux D, Sciamanna M, Deparis O, Mégre P, Blondel M 2001 Opt. Lett. 26 1486
[4] Zhang X J, Wang B J, Yang L Z, Wang A B, Guo D M, Wang Y C 2009 Acta Phys. Sin. 58 3203 (in Chinese) [张秀娟、王冰洁、杨玲珍、王安帮、郭东明、王云才 2009 58 3203]
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[6] Yan S L 2008 Acta Phys. Sin. 57 6878 (in Chinese) [颜森林 2008 57 6878]
[7] Wang X F, Xia G Q, Wu Z M 2009 Acta Phys. Sin. 58 4669 (in Chinese) [王小发、夏光琼、吴正茂 2009 58 4669]
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[9] Zhang J Z, Wang Y C, Wang A B 2008 Chin. Phys. B 17 3264
[10] 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]
[11] Buldú J M, García-Ojalvo J, Torrent M C 2004 IEEE J. Quantum Electron. 40 640
[12] Liu J, Wu Z M, Xia G Q 2009 Opt. Express 17 12619
[13] Wu J G, Xia G Q, Wu Z M 2009 Opt. Express 17 20124
[14] Wu J G, Xia G Q, Tang X, Lin X D, Deng T, Fan L, Wu Z M 2010 Opt. Express 18 6661
[15] Hohl A, Gavrielides A, Erneux T, Kovanis V 1997 Phys. Rev. Lett. 78 474
[16] Fujino H, Ohtsubo J 2001 Opt. Rev. 8 351
[17] Heil T, Fischer I, Elsasser W, Mulet J, Mirasso C R 2001 Phys. Rev. Lett. 86 795
[18] Klein E, Gross N, Rosenbluh M, Kinzel W, Khaykovich L, Kanter I 2006 Phys. Rev. E 73 066214
[19] Vicente R, Mirasso C R 2007 Opt. Lett. 32 403
[20] Chen Z L, Zhou P, Xu X J, Hon J, Jiang Z F 2008 Acta Phys. Sin. 57 3588 (in Chinese) [陈子伦、周 朴、许晓军、侯 静、姜宗福 2008 57 3588]
[21] Deng T, Xia G Q, Cao L P, Chen J G, Lin X D, Wu Z M 2009 Opt. Commun. 282 2243
[22] Gao Z C, Wu Z M, Cao L P, Xia G Q 2009 Appl. Phys. B 97 645
[23] Gross N, Kinzel W, Kanter I, Rosenbluh M, Khaykovich L 2006 Opt. Commun. 267 464
[24] Rogister F, Garacía-Ojalvo J 2003 Opt. Lett. 28 1176
[25] Zhang W L, Pan W, Luo B, Zou X H, Wang M Y, Zhou Z 2008 Opt. Lett. 33 237
[26] Zhang W L, Pan W, Luo B, Zou X H, Wang M Y 2008 IEEE Photon. Technol. Lett. 20 712
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[1] Pecora L M, Carroll T L 1990 Phys. Rev. Lett. 64 821
[2] Sivaprakasam S, Shore K A 1999 Opt. Lett. 24 466
[3] Rogister F, Locquet A, Pieroux D, Sciamanna M, Deparis O, Mégre P, Blondel M 2001 Opt. Lett. 26 1486
[4] Zhang X J, Wang B J, Yang L Z, Wang A B, Guo D M, Wang Y C 2009 Acta Phys. Sin. 58 3203 (in Chinese) [张秀娟、王冰洁、杨玲珍、王安帮、郭东明、王云才 2009 58 3203]
[5] Lee M W, Paul J, Sivaprakasam S, Shore K A 2003 Opt. Lett. 28 2168
[6] Yan S L 2008 Acta Phys. Sin. 57 6878 (in Chinese) [颜森林 2008 57 6878]
[7] Wang X F, Xia G Q, Wu Z M 2009 Acta Phys. Sin. 58 4669 (in Chinese) [王小发、夏光琼、吴正茂 2009 58 4669]
[8] Argyris A, Syvridis D, Larger L, Annovazzi-Lodi V, Colet P, Fischer I, García-Ojalvo J, Mirasso C R, Pesquera L, Shore K A 2005 Nature 437 343
[9] Zhang J Z, Wang Y C, Wang A B 2008 Chin. Phys. B 17 3264
[10] 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]
[11] Buldú J M, García-Ojalvo J, Torrent M C 2004 IEEE J. Quantum Electron. 40 640
[12] Liu J, Wu Z M, Xia G Q 2009 Opt. Express 17 12619
[13] Wu J G, Xia G Q, Wu Z M 2009 Opt. Express 17 20124
[14] Wu J G, Xia G Q, Tang X, Lin X D, Deng T, Fan L, Wu Z M 2010 Opt. Express 18 6661
[15] Hohl A, Gavrielides A, Erneux T, Kovanis V 1997 Phys. Rev. Lett. 78 474
[16] Fujino H, Ohtsubo J 2001 Opt. Rev. 8 351
[17] Heil T, Fischer I, Elsasser W, Mulet J, Mirasso C R 2001 Phys. Rev. Lett. 86 795
[18] Klein E, Gross N, Rosenbluh M, Kinzel W, Khaykovich L, Kanter I 2006 Phys. Rev. E 73 066214
[19] Vicente R, Mirasso C R 2007 Opt. Lett. 32 403
[20] Chen Z L, Zhou P, Xu X J, Hon J, Jiang Z F 2008 Acta Phys. Sin. 57 3588 (in Chinese) [陈子伦、周 朴、许晓军、侯 静、姜宗福 2008 57 3588]
[21] Deng T, Xia G Q, Cao L P, Chen J G, Lin X D, Wu Z M 2009 Opt. Commun. 282 2243
[22] Gao Z C, Wu Z M, Cao L P, Xia G Q 2009 Appl. Phys. B 97 645
[23] Gross N, Kinzel W, Kanter I, Rosenbluh M, Khaykovich L 2006 Opt. Commun. 267 464
[24] Rogister F, Garacía-Ojalvo J 2003 Opt. Lett. 28 1176
[25] Zhang W L, Pan W, Luo B, Zou X H, Wang M Y, Zhou Z 2008 Opt. Lett. 33 237
[26] Zhang W L, Pan W, Luo B, Zou X H, Wang M Y 2008 IEEE Photon. Technol. Lett. 20 712
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