A novel method of chirp elimination using reconstruction equivalent chirp superstructured fiber Bragg grating

作者：Zheng Ji Lin^*; Wang Rong; Fang Tao; Li Lin; Pu Tao; Chen Xiang Fei

来源：Acta Physica Sinica, 2009, 58(10): 7017-7024.

• reconstruction equivalent chirp
• fiber Bragg grating
• chirp
• gain-switched distributed feedback laser diode

A novel chirp elimination and pulse compression method is firstly proposed using reconstruction equivalent chirp superstructured fiber Bragg grating(REC-SSFBG). Based on the feasibility of REC technology for any physical realizable target response, this novel chirp elimination method is suited for any model of chirped pulse. The simulation results show that the time bandwidth product decrease from 2.25, 2.65 and 2.50 to 0.458, 0.636 and 0.73 for linearly chirped, Gauss chirped and Lorentz chirped pulses, respectively. The original pulsewidth is 20 ps and the chirp coefficients is -5 for all the three cases. Further experiment is performed with a fabricated REC-SSFBG to compress a chirped pulse generated from commercial software with model of gain-switched distributed feedback laser diode. The pulsewidth decreases from 25 ps to 5 ps, which agrees well with the simulation.

• 出版日期2009-10
• 单位中国人民解放军陆军工程大学; 南京大学