scholarly journals Flat-top Brillouin gain spectrum with a controllable bandwidth produceal from multiple-lines pump modulation in liquid-core optical fibers

2013 ◽  
Vol 62 (19) ◽  
pp. 194206
Author(s):  
Gao Wei ◽  
Liu Sheng-Nan ◽  
Bi Ya-Feng ◽  
Hu Xiao-Bo ◽  
Pu Shao-Zhi ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Liquid Core ◽  
Gain Spectrum ◽  
Brillouin Gain

Brillouin gain spectrum dependences on temperature and strain in erbium-doped optical fibers with different erbium concentrations

2013 ◽  
Vol 102 (19) ◽  
pp. 191906 ◽  
Author(s):  
Mingjie Ding ◽  
Neisei Hayashi ◽  
Yosuke Mizuno ◽  
Kentaro Nakamura
Keyword(s):  
Optical Fibers ◽  
Gain Spectrum ◽  
Erbium Doped ◽  
Brillouin Gain

Importance of residual stresses in the Brillouin Gain Spectrum of single mode optical fibers

2011 ◽  
Author(s):  
Yolande Sikali Mamdem ◽  
Ekaterina Burov ◽  
Louis-Anne De Montmorillon ◽  
Frédéric Taillade ◽  
Yves Jaouen ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Optical Fibers ◽  
Single Mode ◽  
Gain Spectrum ◽  
Brillouin Gain

scholarly journals Importance of residual stresses in the Brillouin gain spectrum of single mode optical fibers

2012 ◽  
Vol 20 (2) ◽  
pp. 1790 ◽  
Author(s):  
Y. Sikali Mamdem ◽  
E. Burov ◽  
L-A. de Montmorillon ◽  
Y. Jaouën ◽  
G. Moreau ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Optical Fibers ◽  
Single Mode ◽  
Gain Spectrum ◽  
Brillouin Gain

scholarly journals Observation of Brillouin gain spectrum in optical fibers in telecommunication band: Effect of pump wavelength

2016 ◽  
Vol 13 (3) ◽  
pp. 20151066-20151066 ◽  
Author(s):  
Heeyoung Lee ◽  
Neisei Hayashi ◽  
Yosuke Mizuno ◽  
Kentaro Nakamura
Keyword(s):  
Optical Fibers ◽  
Gain Spectrum ◽  
Pump Wavelength ◽  
Brillouin Gain

scholarly journals Brillouin gain spectrum characterization in single-mode optical fibers

1997 ◽  
Vol 15 (10) ◽  
pp. 1842-1851 ◽  
Author(s):  
M. Nikles ◽  
L. Thevenaz ◽  
P.A. Robert
Keyword(s):  
Optical Fibers ◽  
Single Mode ◽  
Gain Spectrum ◽  
Brillouin Gain

scholarly journals Broadband excess intensity noise due to an asymmetric Brillouin gain spectrum in optical fibers

OSA Continuum ◽  
2020 ◽  
Vol 3 (10) ◽  
pp. 2902
Author(s):  
Sven Hochheim ◽  
Michael Steinke ◽  
Peter Wessels ◽  
Jörg Neumann ◽  
Dietmar Kracht
Keyword(s):  
Optical Fibers ◽  
Gain Spectrum ◽  
Intensity Noise ◽  
Brillouin Gain

Modeling Brillouin Gain Spectrum of Solid and Microstructured Optical Fibers Using a Finite Element Method

2011 ◽  
Vol 29 (1) ◽  
pp. 22-30 ◽  
Author(s):  
S Dasgupta ◽  
F Poletti ◽  
S Liu ◽  
P Petropoulos ◽  
D J Richardson ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optical Fibers ◽  
Gain Spectrum ◽  
Microstructured Optical Fibers ◽  
Brillouin Gain ◽  
Element Method

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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