scholarly journals High performance efficiency of distributed optical fiber Raman amplifiers for different pumping configurations in different fiber cable schemes

2012 ◽  
Vol 3 (2) ◽  
Author(s):  
Abd El–Naser A. Mohamed,
Keyword(s):  
Optical Fiber ◽  
High Performance ◽  
Raman Amplifiers ◽  
Distributed Optical Fiber

Pump depletion induced noise and crosstalk in distributed optical fiber Raman amplifiers

2001 ◽  
Vol 13 (7) ◽  
pp. 651-653 ◽  
Author(s):  
Minhui Yan ◽  
Jianping Chen ◽  
Wenning Jiang ◽  
Jianlang Li ◽  
Junfeng Chen ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Raman Amplifiers ◽  
Distributed Optical Fiber ◽  
Pump Depletion

scholarly journals Design of distributed optical-fiber raman amplifiers using multi-objective particle swarm optimization

2011 ◽  
Vol 10 (2) ◽  
pp. 323-336 ◽  
Author(s):  
Carmelo J. A. Bastos-Filho ◽  
Elliackin M. N. Figueiredo ◽  
Joaquim F. Martins-Filho ◽  
Daniel A. R. Chaves ◽  
Marcelo E. V. Segatto ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Optical Fiber ◽  
Particle Swarm ◽  
Swarm Optimization ◽  
Multi Objective ◽  
Raman Amplifiers ◽  
Distributed Optical Fiber

scholarly journals Measurement Improvement of Distributed Optical Fiber Sensor via Lorenz Local Single Peak Fitting Algorithm

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1166
Author(s):  
Bin Liu ◽  
Jianping He ◽  
Shihai Zhang ◽  
Yinping Zhang ◽  
Jianan Yu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Frequency Shift ◽  
Optical Fiber Sensor ◽  
Gain Spectrum ◽  
Fiber Sensor ◽  
Peak Fitting ◽  
Fitting Algorithm ◽  
Distributed Optical Fiber Sensor ◽  
Brillouin Gain ◽  
Distributed Optical Fiber

Brillouin frequency shift (BFS) of distributed optical fiber sensor is extracted from the Brillouin gain spectrum (BGS), which is often characterized by Lorenz type. However, in the case of complex stress and optical fiber self damage, the BGS will deviate from Lorenz type and be asymmetric, which leads to the extraction error of BFS. In order to enhance the extraction accuracy of BFS, the Lorenz local single peak fitting algorithm was developed to fit the Brillouin gain spectrum curve, which can make the BSG symmetrical with respect to the Brillouin center frequency shift. One temperature test of a fiber-reinforced polymer (FRP) packaged sensor whose BSG curve is asymmetric was conducted to verify the idea. The results show that the local region curve of BSG processed by the developed algorithm has good symmetry, and the temperature measurement accuracy obtained by the developed algorithm is higher than that directly measured by demodulation equipment. Comparison with the reference temperature, the relative measurement error measured by the developed algorithm and BOTDA are within 4% and 8%, respectively.

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