提出了一种产生高消光比超短光脉冲的新方法.利用相位调制器调制连续光生成啾啁光,而后利用M-Z强度调制器的倍频调制抑制对压缩不利的啁啾部分的影响,再通过等效啁啾光纤光栅进行压缩产生光脉冲.理论和仿真结果表明,该方法可以很好地消除光脉冲的基底及减小旁辦,产生消光比大于30 dB、波形理想的光脉冲,具有很强的可实现性.最后利用实际制作的色散系数为-380 ps/nm的等效啁啾光纤光栅对该方法进行了实验验证,结果表明,在重复频率为2.5 GHz、相位调制系数为9时,可产生脉宽小于18 ps的高质量光脉冲.
参考文献
| [1] | John E B,Paul A M,et al.Actively mode-locked semiconductor lasers[J].IEEE J.Quantum Electron.,1989,25(6):1426-1439. |
| [2] | Wan F,Wang Z Y.Repetition rate continuously tunable 10-GHz picosecond mode-locked fiber ring laser[J].Chin.Opt.Lett.,2005,4(6):339-341. |
| [3] | Peter P,Ralf L,Dieter Jager.Generation and optimum control of picosecond optical pulses from gain-switched semiconductor lasers[J].IEEE J.Quantum Electron.,1988,24(8):1519-1523. |
| [4] | Saeko O,Koji N,Hideaki H.Low-drive-voltage MQW electroabsorption modulator for optical short-pulse gener-ation[J].IEEE J.Quantum Electron.,1998,34(2):277-282. |
| [5] | Tetsuro K,Hiroshi Y,Kazuhiko A,et al.Optical pulse compression using high-frequency electrooptic phase modulation[J].IEEE J.Quantum Electron.,1988,24(2):382-387. |
| [6] | Tetsuro K,Takashi Y,Satoki K.Optical pulse generator using please modulator and linearly chirped fiber Bragg gratings[J].IEEE Photon.Technol.Lett.,2005,17(8):1746-1748. |
| [7] | Talichi O,Makoto Y,Tadao N,et al.10-80-Gb/s highly extinctive electrooptic pulse pattern generation[J].IEEE J.Selected Topics in Quantum Electron.,1996,2(3):643-649. |
| [8] | Dal Y T,Chen X F,Xia L,et al.Sampled Bragg grating with desired response in one channel by use of a reconstruction algorithm and equivalent chirp[J].Opt.Lett.,2004,29(12):1333-1335. |
| [9] | Wang Aanbin,Wu Jian,Gong Wei,et al.Experimental study on generation of ultra Short optical pulse with high extinction ratio[J].Chinese Journal of Lasers (中国激光),2004,31(3):265-268 (in Chinese). |
| [10] | Yu Bingtao,Xu Wencheng,Xu Yongzhao,et al.Pedestal-free ultra-short pulse generation using nonlinear optical loop mirror by soliton compression efect[J].Chinese Journal of Quantum Electronics (量子电子学报),2005,22(1):90-94 (in Chinese). |
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