scholarly journals A Determination of the Initial Level of the Brillouin Frequency Shift in Optical Fibers of Different Kinds

KnE Energy ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 379 ◽  
Author(s):  
I V Bogachkov
Keyword(s):  
Frequency Shift ◽  
Optical Fibers ◽  
Initial Level

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Influence of measurement noise on the determination of the radial profile of the photoelastic coefficient in step-index optical fibers

2013 ◽  
Vol 52 (35) ◽  
pp. 8451 ◽  
Author(s):  
Sophie Acheroy ◽  
Patrick Merken ◽  
Heidi Ottevaere ◽  
Thomas Geernaert ◽  
Hugo Thienpont ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Radial Profile ◽  
Measurement Noise ◽  
Step Index

Dynamics of optical solitons incorporating Kerr dispersion and self-frequency shift

2019 ◽  
Vol 33 (19) ◽  
pp. 1950220
Author(s):  
Asma Rashid Butt ◽  
Muhammad Abdullah ◽  
Nauman Raza
Keyword(s):  
Frequency Shift ◽  
Optical Fibers ◽  
Laser Light ◽  
Soliton Solutions ◽  
Dark Soliton ◽  
Optical Solitons ◽  
Light Pulses ◽  
Ode Method ◽  
Analytical Approaches ◽  
Extended Trial

This paper deals with the dynamics of optical solitons in nonlinear Schrödinger equation (NLSE) with cubic-quintic law nonlinearity in the presence of self-frequency shift and self-steepening. This type of equation describes the ultralarge capacity transmission and traveling of laser light pulses in optical fibers. Two robust analytical approaches are employed to determine contemporary solutions. Some new explicit rational, periodic and combo periodic soliton solutions are extracted using the extended trial equation method. The Riccati–Bernoulli sub-ODE method provided us with singular and dark soliton solutions. The constraints found are necessary for the existence of solitons.

Streptokinase-Treatment Regimen in Childhood

1979 ◽  
Author(s):  
A.H. Sutor
Keyword(s):  
Treatment Regimen ◽  
Initial Dose ◽  
Blood Test ◽  
Initial Level ◽  
Capillary Blood ◽  
Bleeding Complications

From our experience treating 35 children with streptokinase we drew the following conclusions: 1. For children with shock syndromes due to sepsis we recommend streptokinase (SK-) therapy with 4 000 U/kg (within 15 to 30 min.) as initial dose and 1 000 U/kg (over 12 to 24 hours) as maintenance. 2. Before treatment and as control of the SK-action the determination of the plasminogen-proactivator (pp-) content with a capillary blood test was found to be very useful. 3. Insufficient decrease of PP-values (>3%) under SK-therapy indicates the possibility of hyperplasminemia, which can be connecte, with bleeding complications and which leads to inefficient exogenous fibinolysis. In this case SK-dose has to be increased. The cause of the hyperplasminemia may be underdosage of SK or an abnormally high initial level of pp.

Accurate measurement of the Brillouin frequency shift in optical fibers using a doubly phase-modulated probe light

2008 ◽  
Author(s):  
Kenichiro Tsuji ◽  
Jungmin Kim ◽  
Masaki Oiwa ◽  
Noriaki Onodera ◽  
Masatoshi Saruwatari
Keyword(s):  
Frequency Shift ◽  
Optical Fibers ◽  
Probe Light
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