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.
Papers published on a yearly basis
Papers
More filters
01 Sep 1974
TL;DR: In this article, a technique of using a variable wavelength source to study mode cut-offs up to aV value of 20 for the optical fiber by means of the radiated (scattered) power leaving the fibre was described.
Abstract: We describe a technique of using a variable wavelength source to study mode cut-offs up to aV value of 20 for the optical fibre by means of the radiated (scattered) power leaving the fibre. This allows the identification of individual modes in a fibre carrying up to 80 or 100 modes in all and provides a non-destructive method for the study of the length and bend dependence of the energy carried by the highest order modes.
6 citations
TL;DR: In this article, the state of mode coupling in step-index plastic-clad silica fibers with corrugated surfaces was investigated using the power flow equation, and the coupling coefficient in this equation was obtained using their previously reported method.
Abstract: The state of mode coupling in step-index plastic-clad silica fibers with corrugated surfaces is investigated in this article using the power flow equation. The coupling coefficient in this equation was obtained using our previously reported method. This enabled us to obtain the length of the corrugated piece of the fiber at which equilibrium mode distribution is achieved as well as the length at which a steady state distribution is established. It was found that the plastic-clad silica fibers with corrugated surfaces showed much stronger mode coupling than plastic-clad silica fibers without corrugated surfaces. Consequently, the equilibrium as well as steady state mode distributions were achieved at shorter fiber lengths in plastic-clad silica fibers with corrugated surfaces than in the same type of optical fibers without corrugated surfaces.
6 citations
Patent•
04 Jan 2006
TL;DR: In this article, a first optical mode (1) having a first spatial mode shape (8) and a second optical mode having a second spatial shape (9) is compared to the second spatial model shape (10).
Abstract: Apparatus for propagating optical radiation in a first optical mode (1) having a first spatial mode shape (8), and a second optical mode (2) having a second spatial mode shape (9), which apparatus comprises an optical path (3), mode transforming means (5), and propagating means (6), wherein the mode transforming means (5) transforms at least a portion of the first optical mode (1) to the second optical mode (2), the propagating means (6) is configured such that in use at least some of the optical radiation propagates along the optical path (3) more than once, and the apparatus is characterised in that the first spatial mode shape (8) is different from the second spatial mode shape (9).
6 citations
TL;DR: In this article, the propagation properties of the surface-wave-like mode in slot line are investigated with the spectral domain analysis, which is an odd dominant mode with a magnetic wall symmetric plane placed at the center of the slot, and its field distribution is similar to that of the TM/sub 0/ mode supported by the surrounding structure.
Abstract: Propagation properties of the surface-wave-like mode in slot line are investigated with the spectral domain analysis. This surface-wave-like mode is an odd dominant mode with a magnetic wall symmetric plane placed at the center of the slot. Its field distribution is similar to that of the TM/sub 0/ mode supported by the surrounding structure. It exists in the lower frequency regime and evolves into a nonphysical and nonspectral real mode in the higher frequency regime. Unlike other surface-wave-like modes in planar transmission line, the surface-wave-like mode in slot line does not evolve into a leaky mode.
6 citations
Patent•
IBM1
TL;DR: In this paper, a mode conditioner was used to obtain an equilibrium light distribution in a multimode fiber optic link under test, where light is supplied to the link through a gap between two successive fibre optic segments, followed by a high-curvature region created by wrapping the second fibre optic segment around a mandrel.
Abstract: A fibre optic mode conditioner (14) for obtaining an equilibrium light distribution in a multimode fibre optic link under test (16). Light is supplied to the link through a gap (34) between two successive fibre optic segments (30,32), followed by a high-curvature region created by wrapping the second fibre optic segment around a mandrel (44). The gap functions as a mode filter, stripping off all but the lowest modes, while the curved region acts as a mode scrambler redistributing the light energy into the intermediate modes.
6 citations