一种新型高速光保持模块

针对光电混合模数转换系统中采样光脉冲很窄，高速积分保持电路实现较困难这一问题，本文提出了一种新型的高速光保持模块.通过使用多个耦合器组成的无源结构，将采样后的超窄光脉冲转换成一族脉冲簇，再经过光电转换和电低通滤波，得到了顶部较平、脉宽较宽的脉冲，有助于降低后续处理电路的复杂度.实验结果表明，这种结构能够较好地实现将超窄脉冲展宽成平顶宽脉冲的功能.

Abstract

In an optoelectronic hybrid analog-to-digital conversion system,the duration of the optical sampling pulses was so short that high-speed "integrate-hold" electrical circuits were comparatively difficult to realize.In order to deal with this problem,a novel high-speed "Optical Hold Module" was proposed in this paper.By using a passive structure that consists of multiple optical couplers,the post-sampling ultra-short optical pulses were converted to pulse clusters,which were further converted to broader pulses with a relatively flat top after photo-electrical conversion and electrical low-pass filtering.This was helpful to reduce the complexity of the following electrical processing.The experiment shows that this structure was capable of converting the ultra-short pulses to broader pulses with flat top.

参考文献

[1] WALDEN R.Analog-to-digital converter survey and analysis［J］.IEEE J Sel Areas Commun,1999,17(4): 539-550.

[2] VALLEY G.Photonic analog-to-digital converters［J］.Opt Express,2007,15(5): 1955-1982.

[3] GUO Xiong-ying,YANG Ling-zhen,HE Hu-cheng,et al.Wavelength tunable mode-locked pulse fiber laser based on figure-of-eight cavity［J］.Acta Photonica Sinica,2008,37(2): 212-215.郭雄英,杨玲珍,贺虎成,等.8字形腔波长可调谐锁模脉冲光纤激光器［J］.光子学报,2008,37(2): 212-215.

[4] LI Chun-ming,GAO Lan-lan,TAN Hui-ming,et al.Intracavity frequency doubling multi-longitudinal-mode low noise green laser［J］.Acta Photonica Sinica,2007,36(1): 1-4.李春明,高兰兰,檀慧明,等.腔内倍频多纵模低噪音绿激光器［J］.光子学报,2007,36(1): 1-4.

[5] JIA Dong-fang,TAN Bin,WANG Zhao-ying,et al.Study on stability of harmonic mode locked fiber laser［J］.Acta Photonica Sinica,2007,36(3):391-395.贾东方,谈斌,王肇颖,等.谐波锁模掺铒光纤激光器的稳定性研究［J］.光子学报,2007,36(3):391-395.

[6] STIGWALL J,GALT S.Demonstration and analysis of a 40 gigasample/s interferometric analog-to-digital conversion［J］.J Lightw Technol,2006,24(3): 1247-1256.

[7] LI Wang-zhe,ZHANG Hong-ming,WU Qing-wei,et al.All-optical analog-to-digital conversion based on polarization-differential interference and phase modulation［J］.IEEE Photon Technol Lett,2007,19(8): 625-627.

[8] WU Qing-wei,YAO Min-yu,ZHANG Hong-ming,et al.All-optical analog-to-digital conversion using inherent multiwavelength phase shift in LiNbO3 phase modulator［J］.IEEE Photon Technol Lett,2008,20(12): 1036-1038.

[9] ZHANG Zhuang-qian,ZHANG Hong-ming,FU Xin,et al.A new approach for analog to digital conversion based on double parallel optical intensity modulator［J］.Chinese J Lasers,2008,35(3): 378-382.章壮前,张洪明,傅鑫,等.一种采用并行光强度调制器的模数转换方法［J］.中国激光,2008,35(3): 378-382.

[10] FU Xin,ZHANG Hong-ming,ZHANG Zhuang-qian,et al.Demonstration of quadrature-intensity-modulation-based phase-shifted optical quantization［DB/OL］.(2008-10-31) ［2008-11-28］.http://www.opticsinfobase.org/abstract.cfm URI=AOE-2008-SaK13.

[11] SUN C,WU C,CHANG C,et al.A bridge type optoelectronic sample and hold circuit［J］.J Lightwave Technol,1991,9(3): 341-346.

[12] BHUSHAN A,COPPINGER F,JALALI B.Time-stretched analogue-to-digital conversion［J］.Electron Lett,1995,34(11): 1081-1083.

[13] DONKOR E,HAYDUK M.All-optical high-speed analog-to-encoded-digital conversion of optically sampled signals［C］.SPIE 2001,4445:119-129.

[14] JUODAWLKIS P,TWICHELL J,BETTS G,et al.Optically sampled analog-to-digital converters［J］.IEEE Trans Microwave Theory Tech,2001,49(10): 1840-1853.

[15] JUODAWLKIS P,HARGREAVES J,TWICHELL J.Impact of photodetector nonlinearities on photonic analog-to-digital converters［C］.CLEO 2002 digest,2002,11-12.

[16] ZHANG Hong-ming,YAO Min-yu,ZHANG Jian-feng,et al.Optical A/D conversion by time-interweaved sampling ［J］.Chinese J Lasers, 2001,A28(12): 1096-1098.张洪明,姚敏玉,张剑锋,等.光时分抽样A/D转换［J］.中国激光,2001,A28(12): 1096-1098.

傅鑫, 张洪明, 姚敏玉. 一种新型高速光保持模块[J]. 光子学报, 2009, 38(10): 2491. FU Xin, ZHANG Hong-ming, YAO Min-yu. A Novel High-Speed Optical Hold Module[J]. ACTA PHOTONICA SINICA, 2009, 38(10): 2491.

一种新型高速光保持模块

关于本站 Cookie 的使用提示

全站搜索

一种新型高速光保持模块

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索