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| 基于光频梳的超短光脉冲的产生及其在光模数转换中的应用 | |
| 引用本文： | 窦玉杰,张洪明,姚敏玉.基于光频梳的超短光脉冲的产生及其在光模数转换中的应用[J].中国激光,2012,39(12):1205006-136. |
| 作者姓名： | 窦玉杰 张洪明 姚敏玉 |
| 作者单位： | 窦玉杰:清华大学电子工程系，清华大学信息科学与技术国家实验室，集成光电子学国家重点实验室，北京 100084 张洪明:清华大学电子工程系，清华大学信息科学与技术国家实验室，集成光电子学国家重点实验室，北京 100084 姚敏玉:清华大学电子工程系，清华大学信息科学与技术国家实验室，集成光电子学国家重点实验室，北京 100084 |
| 基金项目： | 国家自然科学基金（60977003，61032005）资助课题。 |
| 摘 要： | 提出并实验验证了一种基于光频梳的超短光脉冲的产生方法。使用强度调制器和相位调制器级联直接调制直流激光得到了29条顶部功率变化小于1.5dB的光频梳。利用单模光纤色散将光频梳整形成重复频率为10GHz,脉宽为2.68ps的光脉冲。并成功用于对1～4GHz信号采样,系统的信噪比可达33.83dB,等效于5.33bit的有效比特数。 |
| 关 键 词： | 超快光学 信号处理 光脉冲 光频梳 相位调制 光模数转换 |
| 收稿时间： | 2012/7/3 |
Ultra-Short Optical Pulse Generation Based on Optical Frequency Comb and Application in Optical Analog-to-Digital Conversion |
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| Dou Yujie Zhang Hongming Yao Minyu.Ultra-Short Optical Pulse Generation Based on Optical Frequency Comb and Application in Optical Analog-to-Digital Conversion[J].Chinese Journal of Lasers,2012,39(12):1205006-136. | |
| Authors: | Dou Yujie Zhang Hongming Yao Minyu |
| Affiliation: | Dou Yujie Zhang Hongming Yao Minyu(State Key Laboratory on Integrated Optoelectronics,Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China) |
| Abstract: | A scheme for the generation of ultra-short optical pulse, based on optical frequency comb (OFC), is proposed and demonstrated experimentally. An OFC with 29 comb lines within 1.5 dB spectral power variation is obtained by cascading intensity and phase modulators modulating a continuous wave laser. The OFC is dispersed by a segment of single mode fiber (SMF). Ultra-short optical pulses with 10 GHz repetition rate and 2.68 ps pulse width are demonstrated. The pulses are used for sampling 1~4 GHz radio frequency signals. The signal-to-noise ratio of this scheme is 33.83 dB, equivalent to effective bit number of 5.33 bit. |
| Keywords: | ultrafast optics signal processing optical pulse optical frequency comb phase modulation optical analog-to-digital conversion |
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