Experimental investigation of the impact of optical injection on vital parameters of a gain-switched pulse source
- 作者：C. Guignard ; P.M. An ; arajah ; A. Clarke ; L.P. Barry ; O. Vaudel ; P. Besnard
- 关键词：Semiconductor lasers ; Pulse generation ; Optical injection ; Frequency resolved optical gating ; Optical pulse measurement
- 刊名：Optics Communications
- 出版年：2007
- 期刊代码：50_00304018
- 类别：ph
- 出版时间：1 September 2007
- 卷：277
- 期：1
- 页码：150-155
- 文件大小：655 K
摘要
An analysis of optical injection on a gain-switched distributed feedback (DFB) laser and its impact on pulse parameters that influence the performance of the pulse source in high-speed optical communication systems is presented in this paper. A range of 10 GHz in detuning and 5 dB in injected power has been experimentally identified to attain pulses, from an optically injected gain-switched DFB laser, with durations below 10 ps and pedestal suppression higher than 35 dB. These pulse features are associated with a side mode suppression ratio of about 30 dB and a timing jitter of less than 1 ps. This demonstrates the feasibility of using optical injection in conjunction with appropriate pulse compression schemes for developing an optimized and cost-efficient pulse source, based on a gain-switched DFB laser, for high-speed photonic systems.