Long distance simultaneous measurement of bending and temperature based on a dual-wavelength Raman fiber laser

2011 ◽  
Author(s):  
Oh-Jang Kwon ◽  
Hyun-Joo Kim ◽  
Min-Seok Yoon ◽  
Sangoh Park ◽  
Youngbo Shim ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Simultaneous Measurement ◽  
Dual Wavelength ◽  
Long Distance ◽  
Raman Fiber Laser

Multiwavelength Raman-fiber-laser-based long-distance remote sensor for simultaneous measurement of strain and temperature

2005 ◽  
Vol 30 (11) ◽  
pp. 1282 ◽  
Author(s):  
Young-Geun Han ◽  
T. V.A. Tran ◽  
Sang-Hyuck Kim ◽  
Sang Bae Lee
Keyword(s):  
Fiber Laser ◽  
Simultaneous Measurement ◽  
Long Distance ◽  
Raman Fiber Laser ◽  
Remote Sensor

scholarly journals Dual-wavelength bidirectional pumped high-power Raman fiber laser

2019 ◽  
Vol 7 ◽  
Author(s):  
Zehui Wang ◽  
Qirong Xiao ◽  
Yusheng Huang ◽  
Jiading Tian ◽  
Dan Li ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Diodes ◽  
Spectral Width ◽  
Dual Wavelength ◽  
Raman Gain ◽  
Experimental Demonstration ◽  
Frequency Model ◽  
Raman Fiber Laser ◽  
Passive Fiber ◽  
Good Agreement

In this paper, we reported both the experimental demonstration and theoretical analysis of a Raman fiber laser based on a master oscillator–power amplifier configuration. The Raman fiber laser adopted the dual-wavelength bidirectional pumping configuration, utilizing 976 nm laser diodes and 1018 nm fiber lasers as the pump sources. A 60-m-long $25/400~\unicode[STIX]{x03BC}\text{m}$ ytterbium-doped fiber was used to convert the power from 1070 to 1124 nm, realizing a maximum power output of 3.7 kW with a 3 dB spectral width of 6.8 nm. Moreover, we developed a multi-frequency model taking into consideration the Raman gain spectrum and amplified spontaneous emission. The calculated spectral broadening of both the forward and backward laser was in good agreement with the experimental results. Finally, a 1.5 kW, 1183 nm second-order Raman fiber laser was further experimentally demonstrated by the addition of a 70-m-long germanium-doped passive fiber.

Sign in / Sign up

Export Citation Format

Share Document