中国激光, 2009, 36 (s1): 353, 网络出版: 2009-06-18
飞秒脉冲在光子晶体光纤中的超连续谱产生
Supercontinuum Generation Using 120 fs Femtosecond Pulse Laser in a Dispersion Flattened Photonic Crystal Fiber
光纤光学 超连续谱产生 光子晶体光纤 飞秒脉冲 fiber optics supercontinumm generation photonic crystal fiber femtosecond pulse
摘要
以1550 nm为中心波长, 利用掺铒光纤激光器产生的120 fs脉冲序列, 在一段40 m长的色散平坦高非线性光子晶体光纤中进行了超连续谱产生的实验研究。实验中光纤的非线性系数约为11 W-1·km-1, 并且在1500~1650 nm波长范围内具有平坦的色散曲线, 色散值变化小于1.2 ps /(nm·km)。在入纤功率为20.8 dBm时, 产生了超过480 nm(20 dB带宽)的超连续谱(1220~1700 nm), 并且在两个通信窗口均较为平坦, 这在超连续光源、波长变换等方面有重要的应用价值。
Abstract
Supercontinuum generation using femtosecond pulse in a nonlinear dispersion flattened photonic crystal fiber is experimentally demonstrated. The photonic crystal fiber with a nonlinearity of about 11 W-1·km-1 is characterized by flattened chromatic dispersion. The chromatic dispersion varies less than 1.2 ps/(nm·km) between 1500 nm and 1650 nm. By injecting 120 fs optical pulses into an 40 m-long dispersion-flattened photonic crystal fiber, the supercontinuum with a broadened spectrum of 480 nm (at 20 dB level) is achieved, it has important applications, such as supercontinuum source and optical wavelength conversion.
王秋国, 张虎, 张霞, 李唯, 杨伯君. 飞秒脉冲在光子晶体光纤中的超连续谱产生[J]. 中国激光, 2009, 36(s1): 353. Wang Qiuguo, Zhang Hu, Zhang Xia, Li Wei, Yang Bojun. Supercontinuum Generation Using 120 fs Femtosecond Pulse Laser in a Dispersion Flattened Photonic Crystal Fiber[J]. Chinese Journal of Lasers, 2009, 36(s1): 353.