中文摘要：

首次将Raman光纤放大技术与波长调制技术结合,使用Raman光纤放大器对近红外激光进行了功率放大,并将放大后的激光应用于远距离天然气管道泄漏遥测中.通过测试Raman光纤放大器在1650 nm波段的性能,发现Raman光纤放大器输出功率为P_（out）时,为保证输出信号不发生形变所需的种子光源调制频率f与P_（out）满足特定的线性关系,并以此为基础实现了500 m远距离激光遥感探测,为在机载平台上开展天然气泄漏激光遥测技术研究提奠定了基础.

英文摘要：

Combining Raman fiber amplification technique with wavelength modulation technique for the first time,the power of near-infrared laser is amplified by Raman optical fiber amplifier,and the laser amplified is used for the long-distance remote detection of nature gas pipeline leak.Raman fiber amplifier performances are tested at 1650 nm range.It＇s found that when the output power of Raman fiber amplifier is P_（out））,f and P_（out） meet certain linear relationship in order to ensure non-deformation of the output signal.Based on it,500 m long distance laser remote sensing detection is＇ realized.It lays the foundation for research of laser remote sensing technology of natural gas leakage on airborne platform.