Simplified coupling power model for fibers fusion |
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Authors: | J Saktioto J Ali M Fadhali |
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Institution: | 1. Physics Department, Math and Sciences Faculty, University of Riau, Panam Pekanbaru, Indonesia 2. Institute of Advanced Photonics Science, Science Faculty, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor Bahru, Malaysia 3. Physics Department, Faculty of Science, Ibb University, Ibb, Yemen
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Abstract: | Fiber coupler fabrication used for an optical waveguide requires lossless power for an optimal application. The previous research
coupled fibers were successfully fabricated by injecting hydrogen flow at 1 bar and fused slightly by unstable torch flame
in the range of 800–1350°C. Optical parameters may vary significantly over wide range physical properties. Coupling coefficient
and refractive index are estimated from the experimental result of the coupling ratio distribution from 1% to 75%. The change
of geometrical fiber affects the normalized frequency V even for single mode fibers. V is derived and some parametric variations
are performed on the left and right hand side of the coupling region. A partial power is modelled and derived using V, normalized
lateral phase constant u, and normalized lateral attenuation constant, w through the second kind of modified Bessel function
of the l order, which obeys the normal mode and normalized propagation constant b. Total power is maintained constant in order
to comply with the energy conservation law. The power is integrated through V, u, and w over the pulling length of 7500 μm
for 1-D. The core radius of a fiber significantly affects V and power partially at coupling region rather than wavelength
and refractive index of core and cladding. This model has power phenomena in transmission and reflection for an optical switch
and tunable filter. |
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