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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 405-408 |
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Sepahvand A, Karimi M, Shohani A, Jamshidi ghale K, Amniat talab M. Coupled Mode Coefficient Determination in High Power Fiber Amplifiers. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :405-408
URL: http://opsi.ir/article-1-1710-en.html
URL: http://opsi.ir/article-1-1710-en.html
1- Department of Physics, Azarbaijan Shahid Madani University, West Azarbaijan, Tabriz, Iran
2- Institute of Nuclear Science and Technology, AEOI, Tehran, Iran
3- Department of Physics, Urmia University, 11km SERO Road, Urmia, Iran
2- Institute of Nuclear Science and Technology, AEOI, Tehran, Iran
3- Department of Physics, Urmia University, 11km SERO Road, Urmia, Iran
Abstract: (1704 Views)
Double-clad fibers are used to generate the power up to kilowatts at fiber amplifiers and lasers. Different factors, such as the nonlinear effects and the mode instability effect on the output of the fiber amplifiers and lasers. Mode instability is known as the largest limiting factor on them. The main reason for the mode instability is the energy transfer from the fundamental mode to the first higher order mode . Therefore, the relationship between modes and coupling of them is very important in the high power fiber amplifiers. The first step in the calculation of the mode instability is the coupling constant specification and the factors effect on it. In this paper, the effect of core size on the coupling constant value was studied and the effect of waveguide parameter on the maximum value of coupling constant was verified. It was shown that for the fibers with the similar waveguide number; the value of coupling constant is independent on the wavelength.
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