Narrow line-width 1653 nm Raman fiber amplifiers - Details

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Abstract：

A　1653　nm　Raman　fiber　amplifier　with　a　narrow　line-width　output,　which　adopts　the　all-fiber　configuration　is　reported.　The　Raman　seeder　is　a　distributed　feed　back　(DFB)　diode　laser　with　8　mW　output　power　and　2　MHz　linewidth.　The　pump　source　is　a　1541　nm　Er-doped　fiber　laser.　The　Raman　gain　fiber　is　500-m　long　nonlinear　fiber　(HNLF).　When　the　pump　power　is　3.32　W,　the　output　power　of　the　Raman　fiber　amplifier　is　260　mW,　corresponding　to　15.1　dB　gain　and　12%　slope　efficiency.　Since　the　central　wavelength　of　this　laser　is　located　at　one　strong　absorption　peak　of　methane　molecular,　it　can　be　used　in　many　fields,　such　as　the　atmosphere　monitor　and　natural　gas　leak　detection　system.

Keyword：

Pumping (laser) Stimulated Raman scattering Leak detection Methane Natural gas fields Fibers Fiber lasers Erbium doped fiber amplifiers Lasers

Author Community：

[ 1 ] [Xu, Jia]National Center of Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wang, Lei]Laboratory of Atmospheric Physic-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
[ 3 ] [Liu, Jiang]National Center of Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Shi, Hongxing]National Center of Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Gao, Xiaoming]Laboratory of Atmospheric Physic-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
[ 6 ] [Wang, Pu]National Center of Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China