Topic
Equilibrium mode distribution
About: Equilibrium mode distribution is a research topic. Over the lifetime, 928 publications have been published within this topic receiving 14939 citations.
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24 May 2002
TL;DR: In this paper, a comparison of the single beam and the interference coupling schemes into single mode fibers is presented, based on the overlapping integrals of the fiber mode field and the distribution of the input fight intensity.
Abstract: Summary from only given. We propose a comparison of the single beam and the interference coupling schemes into single mode fibers. Coupling efficiency calculations, based on the overlapping integrals of the fiber mode field and the distribution of the input fight intensity are presented. This study takes into account the light coupling and propagation in the fiber core and cladding.
30 Jun 2013
TL;DR: In this article, the beam apertures were optimized to achieve lower average coupling loss and mode dependent losses for efficient space division multiplexing from single mode fibers to a few mode fiber.
Abstract: Efficient space division multiplexing from single mode fibers to a few mode fiber is extended to specialty refractive index ring profile fibers. Optimizing the beam apertures achieves lower average coupling loss and mode dependent losses.
TL;DR: In this paper, the TM0 guided self-focusing planar waveguide and its universal dispersion curves were obtained by an approximation method, and the single-mode propagation condition of the fundamental mode TE0 in the self-focus waveguide was discussed based on the cutoff wavelengths of the higher-order TE modes and the higherorder TM modes.
Abstract: The TM0 guided mode in the self-focusing dielectric planar waveguide and its universal dispersion curves are obtained by an approximation method, The single mode propagation condition of the fundamental mode TE0 in the self-focusing planar waveguide is discussed based on the cutoff wavelengths of the higher-order TE modes and the higher-order TM modes. The coupling between the fundamental mode TE0 and the second mode TM0 is described by the calculation of the birefringence between the TE0 mode and the TM0 mode. It was found that the Kerr effect with α > 0 (α is a parameter which describes the film nonlinearity) causes the fields to be confined in the self-focusing film, which results in the waveguide wavelength decreasing and the cutoff wavelength increasing as α is increased. In addition, the range of the single mode propagation is increased as α is increased. If the self-focusing planar waveguide can support both the TE0 mode and the TM0 mode, then the coupling between the TE0 mode and the TM0 mode is very strong and can be decreased by increasing α. © 1992 John Wiley & Sons, Inc.
25 Aug 1994
TL;DR: In this article, the bpm method and the coupled-mode theory for a conical fiber were used to analyze the field in tapered fibers, and the comparison between the quasi 3D numerical simulation and the local mode method was also performed.
Abstract: Many possibilities are offered to analyze the field in tapered fibers. We have used in this work the bpm method and the coupled-mode theory for a conical fiber. In the second case, it is shown by a length-scale criterion that some geometries should provide a good efficiency. The comparison between the quasi 3D numerical simulation and the local mode method is also performed. The complete resolution procedure is then dependent on certain essential approximations and simplifying hypothesis.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
TL;DR: In this article, the propagation constant and the modal field distribution for an arbitrary graded-index optical fiber have been calculated with the use of the coupled mode theory, where the infinitely extended parabolic profile fiber is taken as an ideal waveguide, and an arbitrary radially inhomogeneous optical fiber can be viewed as a perturbation.
Abstract: The propagation constant and the modal field distribution for guided modes of an arbitrary graded-index optical fiber have been calculated with the use of the coupled mode theory. The infinitely extended parabolic profile fiber is taken as an ideal waveguide, and an arbitrary radially inhomogeneous optical fiber can be viewed as a perturbation. Its modal field can be expanded in terms of a complete set of ideal waveguide modes. Eigenvalues and modal fields are then obtained from coupled mode equations that have been transformed into a set of linear equations. Numerical results have been presented and compared with exact values. © 1996 John Wiley & Sons, Inc.