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本文将交叉反馈半导体环形激光器（SRL）产生的两路混沌信号平行单向注入到从激光器对应的模式中，构成了宽带混沌激光生成方案.通过建立速率方程，数值分析了失谐频率和注入强度对系统带宽及安全性影响.利用强度时间序列的频域变化规律揭示了带宽增强的物理原因，并且对增强区域不对称进行了解释.仿真结果表明：两路混沌信号的带宽增强路径相似.在非注入锁定区域，选择较高失谐频率以及适当的注入强度可以实现两路信号的带宽以及不可预测度同时增强.通过分析混沌信号的光谱可知注入混沌光与从激光器激光之间的拍频作用产生的高频振荡是导致带宽增强的物理原因.主激光器发生红移现象导致带宽增强区域呈现不对称，并且负失谐频率下容易实现带宽增强.非对称注入强度使得注入锁定区域缩小，拓宽了高注入强度下带宽增强范围.
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[1] Ermakov I V, Kingni S T, Tronciu V Z, Danckaert J 2013 Opt. Commun. 286 265
[2] Li N Q, Pan W, Yan L S, Luo B, Zou X H 2014 Commun. Nonlinear Sci. Numer. Simul. 19 1874
[3] Li N Q, Pan W, Xiang S Y, Luo B, Yan L S, Zou X H 2013 Appl. Opt. 52 1523
[4] Sunada S, Harayama T, Arai K, Yoshimura K, Tsuzuki K, Uchida A, Davis P 2011 Opt. Express 19 7439
[5] Hirano K, Yamazaki T, Morikatsu S, Okumura H, Aida H, Uchida A, Yoshimori S, Yoshimura K, Harayama T, Davis P 2010 Opt. Express 18 5512
[6] Wang A B, Wang B J, Li L, Wang Y C, Shore K A 2015 IEEE J. Sel. Top. Quantum Electron. 21 1800710
[7] Sakuraba R, Iwakawa K, Kanno K, Uchida A 2015 Opt. Express 23 1470
[8] Murakami A, Kawashima K, Atsuki K 2003 IEEE J. Quantum Electron. 39 1196
[9] Wang A B, Wang Y C, He H 2008 IEEE Photonics. Technol. Lett. 20 1633
[10] Wang A B, Wang Y C, Wang J F 2009 Opt. Lett. 34 1144
[11] Hong Y H, Spencer P S, Shore K A 2012 Opt. Soc. Am. 29 415
[12] Chen J J, Wu Z M, Tang X, Deng T, Fan L, Zhong Z Q, Xia G Q 2015 Opt. Express 23 7173
[13] Uchida A, Heil T, Liu Y, Davis P, Aida T 2003 IEEE J. Quantum Electron. 39 1462
[14] Xiang S Y, Pan W, Luo B, Yan L S, Zou X H, Li N Q, Zhu H N 2012 IEEE J. Quantum Electron. 48 1069
[15] Memon M I, Li B, Mezosi G, Wang Z R, Sorel M, Yu S Y 2009 IEEE Photonics Technol. Lett. 21 1792
[16] Yuan G H, Zhang X, Wang Z R 2013 Optik 124 5715
[17] Xiang S Y, Wen A J, Shang L, Zhang H X, Lin L 2013 International Conference on Optical Communications & Networks Bhopal, India July 26-28, 2013 p1
[18] Li N Q, Pan W, Xiang S Y, Yan L S, Luo B, Zou X H, Zhang L Y 2013 Optics & Laser Technology 53 45
[19] Nguimdo R M, Verschaffelt G, Danckaert J, van der Sande G 2012 Opt. Lett. 37 2541
[20] Wang Z R, Yuan G H, Verschaffelt G, Danckaert J, Yu S Y 2008 IEEE Photonics Technol. Lett. 20 1228
[21] Trita A, Mezosi G, Sorel M, Giuliani G 2014 IEEE Photonics Technol. Lett. 26 96
[22] Wang S T, Wu Z M, Wu J G, Zhou L, Xia G Q 2015 Acta Phys. Sin. 64 154205 (in Chinese)[王顺天, 吴正茂, 吴加贵, 周立, 夏光琼2015物理学报64 154205]
[23] Chrostowski L, Shi W 2008 IEEE J. Lightwave Technol. 26 3355
[24] Sorel M, Giuliani G, Scire A, Miglierina R, Donati S, Laybourn P J R 2003 IEEE J. Quantum Electron. 39 1187
[25] Xiang S Y 2012 Ph. D. Dissertation (Chengdu:Southwest jiaotong university) (in Chinese)[项水英2012博士学位论文(成都:西南交通大学)]
[26] Liu Q X, Pan W, Zhang L Y, Li N Q, Yan J 2015 Acta Phys. Sin. 64 242091 (in Chinese)[刘庆喜, 潘炜, 张力月, 李念强, 阎娟2015物理学报64 242091]
[27] Bandt C, Pompe B 2002 Phys. Rev. Lett. 88 174102
[28] Zunino L, Rosso O A, Soriano M C 2011 IEEE J. Sel. Top. Quantum Electron. 17 1250
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