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Step-index profile
About: Step-index profile is a research topic. Over the lifetime, 3104 publications have been published within this topic receiving 53199 citations.
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TL;DR: In this paper, it was shown that it is possible for beam trapping to occur within the non-linear medium but for the beam to come to a focus outside the medium tank.
Abstract: RECENT theory1–3 and experiments4–7 have demonstrated the existence of an intensity dependent non-linear component in the refractive index of some materials. This non-linearity in the refractive index has been observed to rotate an elliptically polarized optical maser beam4,5 and to lead to self trapping6,7. This communication considers the two step nature of focusing which leads to the conclusion that a sample tank filled with one of these non-linear materials can be made to behave like a lens. It will be shown that it is possible for beam trapping to occur within the non-linear medium but for the beam to come to a focus outside the medium tank (see Fig. 1).
17 citations
TL;DR: In this article, the effect of the refractive index profile on the omnidirectional reflector of one dimensional dielectric and semiconductor multilayer structure having linearly graded material has been simulated using transfer matrix method.
17 citations
TL;DR: In this paper, a low-index inner core was introduced into the core of index-guiding microstructure optical fibers, and the interrelationships of inner-core index with laser wavelength, air hole diameter and size of inner core were investigated.
17 citations
Patent•
19 Dec 1986TL;DR: In this article, an optical multiconductor of the silica glass type chracterized in that the multiconductor comprises 102 to 107 optical fibers fused to one another, each of the optical fibers comprising a core made of doped glass and occupying at least 20% of the fiber in cross sectional area, and a cladding layer formed on the core, the core having a refractive index distribution satisfying the following expression.
Abstract: OF THE DISCLOSURE1. An optical multiconductor of the silica glass type chracterized in that the multiconductor comprises 102 to 107 optical fibers of the silica glass type fused to one another, each of the optical fibers comprising a core made of doped silica glass and occupying at least 20% of the fiber in cross sectional area, and a cladding layer made of a kind of silica glass and formed on the core, the core having a refractive index distribution satisfying the following expression:n2?n1 -1 0.50(n1 - n1) where-in n0 is the refractive index of the core at its center, n1 is the refractive index of the core at its outermost portion, and n2 is the refractive index of the core at a position centered about the axis of the core and having an average radius of 0.65r1, the r1 being an average radius of the core. The multiconductor is suited to use as the image trans-mitter of an image scope for industrial, medical or other uses.
17 citations
17 citations