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The dependence of structural parameters on the effective index of the fundamental guided mode, effective index of the fundamental cladding mode, mode field diameter, confinement loss, effective mode area, and chromatic dispersion in PCF have been studied, respectively.
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This article contains a Reduced Primary Model (RPM) for estimating the primary dynamical responses, based on fundamental governing equations, clad temperature rising estimation after occurring the LOCA for a modern PWR are carried out.
The LPGs based on the periodic modulation of the refractive index in the core region of the conventional single-mode fiber (SMF) can couple the fundamental core mode to cladding modes [1, 2].
Optical liquids can be used to engineer the dispersion characteristics of fibers by serving as the core or cladding to attain fundamental-mode cutoff effect.
The coupler is constituted by a long-period grating (LPG) which increases the pump power transfer from the inner cladding modes towards the fundamental core mode.
The various designs obtained by varying the controlling parameters, have been investigated for properties such as the effective core and cladding indices, confinement of fundamental mode and higher order mode, and the V parameter values.
This can be achieved in the proposed photonic crystal fiber because the sum-frequency wave propagating in a LP02 mode leaks more into the low refractive index cladding than does the fundamental wave.
With the aid of the inner cladding formed by the central air holes, one polarization of the fundamental mode can be cut off at very short wavelengths and ultra-wideband SPSM propagation can be achieved.
This work contributes to the comprehensive understanding of laser cladding, as well as provides a fundamental basis for controlling the microstructure in laser deposited nickel-based superalloy coatings.
This development is a crude approximation of a real confocal imaging system with a DCTF, but has the advantage of giving normalized results for any type of DCTF as long as its fundamental mode is nearly Gaussian and the inner cladding is highly MM.
Inset: Finite element method simulation of the time averaged energy density for the fundamental mode at 1550 nm of an air-clad tapered fiber with a diameter of 1 μm and index of refraction 1.4677.
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