基于光子晶体光纤的1μm波段参量放大器  

Optical Parametric Amplifier at 1μm Based on Photonic Crystal Fiber

作　　者：王小建[1] 杨四刚[1] 陈宏伟[1] 陈明华[1] 谢世钟[1] 

机构地区：[1]清华大学电子工程系信息科学与技术国家实验室,北京100084

出　　处：《光学学报》2013年第9期54-58,共5页Acta Optica Sinica

基　　金：国家973计划(2010CB327606);国家自然科学基金(61108007)

摘　　要：利用零色散波长在1020nm附近的光子晶体光纤(PCF),对光纤光参量放大器(OPA)进行了研究。为了在较短的光纤中产生足够的参量增益,搭建了锁模掺镱光纤激光器作为抽运种子源,采用其具有高峰值功率的脉冲进行抽运。该激光器产生的短脉冲被放大后注入到PCF进行抽运。当抽运脉冲的中心波长接近光纤的零色散波长时,观测到了显著的参量增益。研究了不同抽运功率以及不同抽运波长下参量增益的变化,最高获得了23dB的参量增益。Based on a photonic crystal fiber （PCF） with zero-dispersion wavelength of about 1020 nm, fiber optical parametric amplifier （OPA） is investigated in detail. In order to obtain sufficient parametric gain in a rather short length of fiber, a passively mode-locked ytterbium fiber laser is built up to act as the pump seed, and pulse with high peak power is utilized to pump. The amplified short pulse from the mode-locked fiber laser is launched into the PCF to pump. Once the pump central wavelength approaches the zero-dispersion wavelength, significant parametric gain can be observed. The evolutions of parametric gain spectra versus different pump powers and pump wavelengths are investigated. The maximum parametric gain reaches 23 dB from experiment.

关 键 词：光纤光学 光子晶体光纤 光参量放大 四波混频 锁模激光器 

分 类 号：TN929.11[电子电信—通信与信息系统]