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- W2593704648 abstract "In this study, attention was made to measure the length of the fiber and the coefficient of the fiber attenuation utilizing novel configurations. Laser diodesource with a fundamental wavelength of (808 ± 10) nm with a maximum power of 50 mW was employed. First measurement utilizes a polarized beamsplitter whereas the second measurement utilizes a beam coupler. The laser was launched in pulsed mode with a 75 ns pulse width which deliveredapproximately 15 mW power into the fiber and the laser source was adjusted to operate in continuous mode with a 50 % duty cycle. A preamplified SiPIN photodetector was used to detect the backscattered light. Later these results were compared with a measurement that utilizes a conventional AnritsuOTDR with a 850 nm wavelength. The length of the fiber obtained is 1313.99 m and shows a deviation of 0.46 % for the first measurement and 1303.89m with a deviation of 0.38 % for the second measurement. The attenuation coefficient for that fiber is 2.65 dB.km-1 with a deviation of 16.22 % for thefirst measurement and 2.58 dB.km-1 with a deviation of 13.16 % for the second measurement. An adjustable BK7 glass plate was used for signaloptimization in the system. Results show that maximum coupling and also maximum backscattered signal occurs when the BK7 glass window is rotated35° anticlockwise." @default.
- W2593704648 created "2017-03-16" @default.
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- W2593704648 date "2014-07-23" @default.
- W2593704648 modified "2023-09-26" @default.
- W2593704648 title "The usage of optical coupler and its optimization signal in modified optical time domain reflectometer" @default.
- W2593704648 doi "https://doi.org/10.11113/mjfas.v7n1.206" @default.
- W2593704648 hasPublicationYear "2014" @default.
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