Precise measurement of the rotational Raman gain coefficient in para-hydrogen by the large-signal method

1992 ◽  
Vol 31 (21) ◽  
pp. 4165 ◽  
Author(s):  
Akira Tsunemi ◽  
Keigo Nagasaka ◽  
Hideo Tashiro
Keyword(s):  
Precise Measurement ◽  
Gain Coefficient ◽  
Raman Gain ◽  
Para Hydrogen ◽  
Large Signal ◽  
Signal Method

scholarly journals Scaling of the raman gain coefficient: applications to germanosilicate fibers

2003 ◽  
Vol 21 (7) ◽  
pp. 1652-1662 ◽  
Author(s):  
K. Rottwitt ◽  
J. Bromage ◽  
A.J. Stentz ◽  
Lufeng Leng ◽  
M.E. Lines ◽  
...  
Keyword(s):  
Gain Coefficient ◽  
Raman Gain

scholarly journals Effect of Temperature and Germania on the Performance of Germania Doped Silica Fiber Raman Scattering Amplifier

2022 ◽  
Author(s):  
B. M. El-den ◽  
Adel zaghloul
Keyword(s):  
Pump Power ◽  
Gain Coefficient ◽  
Effect Of Temperature ◽  
Refractive Indices ◽  
Raman Gain ◽  
Gain Saturation ◽  
Core Radius ◽  
Signal Wavelength ◽  
Amplifier Gain ◽  
Better Than

Abstract The Raman gain coefficient, the attenuations at signal and pump wavelengths and the refractive indices of both core and cladding of silica doped Germania optical fiber are functions of the Germania ratio, temperature and wavelengths. The Raman amplifier gain increases with Germania ratio but it decreases with temperature. Also, Raman gain either increases or decreases with signal wavelength. As the fiber core radius increases, the Raman gain decreases. The gain distribution through the amplifier length of dual pumps with power divided ratio (S=0.5) is better than that for the forward pump amplifier and the backward pump amplifier. The forward pump has a maximized gain but the backward pump has a minimized gain, while the dual pumps have both the maximum and minimized gains. The final amplifier gain for the three kinds of pumps with the same pump power (Pp) is equally.The pump wavelength (λp=1.4553μm) gives the biggest Raman gain at the center of wideband signal wavelength (λs=1.50 to 1.60μm). With λp =1.48μm, the gain increases with λs until λs=1.57μm and after that the gain decreases with λs and so with the above three kinds of pumps, gain fluctuations over the band wavelength of signal. The threshold pump power and gain saturation are studied.

Raman gain coefficient of Er3+ doped TeO2–Li2O–ZnO glasses

2019 ◽  
Vol 30 (18) ◽  
pp. 16917-16921
Author(s):  
Daniele Toniolo Dias ◽  
Anderson Gonçalves ◽  
Aloisi Somer ◽  
Vitor Santaella Zanuto ◽  
Rosiane Antunes dos Santos ◽  
...  
Keyword(s):  
Gain Coefficient ◽  
Raman Gain
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