Stability Analysis of Mode Locked Figure-eight Fiber Laser
Mode locked fiber laser, as a source of short pulse generation finds applications in telecommunications and optical signal processing where low noise and stable pulse train is the main requirement. It is therefore important to analyze its shot to shot pulse amplitude stability and timing jitter. By introducing a gradual twist in fiber and using a length of normal dispersion EDF to stretch and amplify the pulse,high energy and stable pulse train generated from a figure eight laser has been analyzed. Fluctuations in pulse repetition time and in pulse energy as well as jitter in pulse width occur simultaneously. All these types of noise have been characterized quantitatively by examining the higher harmonics of the RF spectrum. By optimizing the total dispersion and cavity length of the laser,it was found by measurement that a peak to peak stability of 99. 2％ and a timing jitter of 5. 59 psec for 2. 31 MHz pulse train was obtained. This is quite remarkable. However,it is observed that the variation of cavity parameters results in increased timing jitter and peak pulse instability.
M.K.Islam P.L.Chu
City University of Hong Kong,Hongkong
国际会议
Progress in Electromagnetics Research Symposium 2005(2005年电磁学研究新进展学术研讨会)(PIERS 2005)
杭州
英文
416-419
2005-08-22（万方平台首次上网日期，不代表论文的发表时间）