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Equilibrium Mode Distribution and Steady State Distribution in Step-Index Glass Optical Fibers

100%
Savović S., Djordjevich A., Drljača B., Simović A.
Acta Physica Polonica A
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2009
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vol. 116
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issue 4
655-657
EN
Using the power flow equation, we have examined mode coupling in a step-index multimode glass optical fiber. As a result, the coupling length at which the equilibrium mode distribution is achieved and the length of fiber required for achieving the steady-state mode distribution are obtained. These lengths are much longer for glass fiber than they are for plastic optical fibers. Our results are in good agreement with experimental results reported earlier.
2
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Calculation of the Impulse Response of Step-Index Plastic Optical Fibers Using the Time-Dependent Power Flow Equation

100%
Drljača B., Savović S., Djordjevich A.
Acta Physica Polonica A
|
2009
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vol. 116
|
issue 4
658-660
EN
The analytical solution of the time-dependent power flow equation is employed to calculate impulse response in a step-index plastic optical fiber. Results are given at different fiber lengths and are shown to agree with those reported in the literature. Mode-dependent attenuation, modal dispersion and mode coupling in plastic optical fibers are known to affect fiber-optic power delivery, data transmission, and sensing systems.
3
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Comparison of Methods for Calculating Coupling Length in Step-Index Optical Fibers

100%
Savović S., Djordjevich A., Drljača B., Kovačević M.
Acta Physica Polonica A
|
2009
|
vol. 116
|
issue 4
652-654
EN
A recently reported function for calculation of the coupling length at which the equilibrium mode distribution is achieved in step-index plastic optical fibers is compared to a long established calculation method and to experimental findings. The recent function, while simpler to apply as it eliminates the need to numerically solve the power flow equation repeatedly for every case, is also more accurate for high numerical aperture (0.45 to 0.5) plastic optical fibers.
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