Fine-filter method for Raman lidar based on wavelength division multiplexing and fiber Bragg grating

2017 ◽  
Vol 56 (31) ◽  
pp. 8851
Author(s):  
Jun Wang ◽  
Jiao Zheng ◽  
Hong Lu ◽  
Qing Yan ◽  
Li Wang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplexing ◽  
Filter Method ◽  
Bragg Grating ◽  
Raman Lidar ◽  
Wavelength Division ◽  
Fine Filter

Spectrum-profile-identification-based wavelength division multiplexing method for a fiber Bragg grating sensor

2017 ◽  
Vol 15 (7) ◽  
pp. 070605
Author(s):  
Yuheng Pan Yuheng Pan ◽  
Junfeng Jiang Junfeng Jiang ◽  
Weijia Lu Weijia Lu ◽  
Huijia Yang Huijia Yang ◽  
Kun Liu Kun Liu ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplexing ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Wavelength Division ◽  
Bragg Grating Sensor

Wavelength-Division Multiplexing Fiber Bragg Grating Vibration Sensing Demodulation System

2013 ◽  
Vol 718-720 ◽  
pp. 636-640
Author(s):  
Fang Dong Zhu ◽  
Dong Sheng Zhang ◽  
Yong Xing Guo ◽  
Li Tong Li
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Wavelength Division Multiplexing ◽  
Tunable Filter ◽  
Vibration Measurement ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Wavelength Division ◽  
Vibration Sensors ◽  
Vibration Sensing

A fiber Bragg grating (FBG) sensing network for vibration measurement is proposed and demonstrated in this paper. The light source of the described sensing technique is an erbium-doped fiber laser applying a 980-nm laser diode and a fiber Fabry-Perot tunable filter. The fiber laser has a 40nm tuning range, allowing many vibration sensors to be multiplexed on the same fiber. Reflected light wavelength shift of the FBG sensor caused by strain variation is converted to intensity deviation, which avoids a complex demodulation process. This sensing scheme can effectively increase the demodulation speed of sensing system up to 20 KHz. At least 20 FBGs can be multiplexed alone a fiber.

Wavelength Division Multiplexing/Optical Code Divison Multiplexing System Based on Supercontinuum and Supersturctured Fiber Bragg Grating

2008 ◽  
Vol 35 (1) ◽  
pp. 77-81 ◽  
Author(s):  
陈小刚 Chen Xiaogang ◽  
黄德修 Huang Dexiu ◽  
元秀华 Yuan Xiuhua ◽  
夏舸 Xia Ge
Keyword(s):  
Fiber Bragg Grating ◽  
Wavelength Division Multiplexing ◽  
Bragg Grating ◽  
Wavelength Division
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