DELAY MEASUREMENT OF FEMTOSECOND LASER PULSES USING ALL-FIBER AUTOCORRELATION TECHNIQUE BASED ON FWM

摘要：

This paper proposes an all-fiber autocorrelation technique based on FWM used to measure propagation delay of femtosecond laser pulses in a specimen and establishes a measurement system based on this technique. An all-fiber Mach-Zehnder structure with adjustable optical delay line in one arm provides a signal and its delay signal. The two laser pulses and the pump generate an idler signal by process of degenerate four waves mixing in a highly nonlinear fiber with high Kerr coefficient. The idler signal intensity represents the relativity of the two laser pulses. When the strongest intensity of idler signal is obtained, the corresponding delay of the adjustable optical delay line is the target delay. We have measured the delay of a short fiber, and the simulation measurement result shows the delay of the short fiber is 300fs.

关键词： all-fiber autocorrelation FWM femtosecond laser pulses delay measurement

作者: Xiaoying Zhu Chongxiu Yu Kuiru Wang Songhui Shen

作者单位: Key Laboratory of Optical Communication and Lightwave Technologies of Ministry of Education, School of Electronics Engineering, Beijing University of posts and Telecommunications, Beijing 100876, China

会议类型: 国际会议

会议名称: China-Ireland International Conference on Information and Communications Technologies 2008(2008 中国-爱尔兰信息与通信技术国际会议 CIICT 2008)

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2008-09-26（万方平台首次上网日期，不代表论文的发表时间）