Ray-Optical Techniques in Dielectric Waveguides

Masahiro HASHIMOTO; Hiroyuki HASHIMOTO

Ray-Optical Techniques in Dielectric Waveguides

Masahiro HASHIMOTO, Hiroyuki HASHIMOTO

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We describe a geometrical optics approach for the analysis of dielectric tapered waveguides. The method is based on the ray-optical treatment for wave-normal rays defined newly to waves of light in open structures. Geometrical optics fields are represented in terms of two kinds of wave-normal rays: leaky rays and guided rays. Since the behavior of these rays is different in the two regions separated at critical incidence, the geometrical optics fields have certain classes of discontinuity in a transition region between leaky and guided regions. Guided wave solutions are given as a superposition of guided rays that zigzag along the guides, all of which are totally reflected upon the interfaces. By including some leaky rays adjacent to the guided rays, we obtain more accurate guided wave solutions. Calculated results are in excellent agreement with wave optics solutions.

Publication: IEICE TRANSACTIONS on Electronics Vol.E77-C No.4 pp.639-646

Publication Date: 1994/04/25

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Type of Manuscript: PAPER

Category: Electromagnetic Theory

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Masahiro HASHIMOTO, Hiroyuki HASHIMOTO, "Ray-Optical Techniques in Dielectric Waveguides" in IEICE TRANSACTIONS on Electronics, vol. E77-C, no. 4, pp. 639-646, April 1994, doi: .
Abstract: We describe a geometrical optics approach for the analysis of dielectric tapered waveguides. The method is based on the ray-optical treatment for wave-normal rays defined newly to waves of light in open structures. Geometrical optics fields are represented in terms of two kinds of wave-normal rays: leaky rays and guided rays. Since the behavior of these rays is different in the two regions separated at critical incidence, the geometrical optics fields have certain classes of discontinuity in a transition region between leaky and guided regions. Guided wave solutions are given as a superposition of guided rays that zigzag along the guides, all of which are totally reflected upon the interfaces. By including some leaky rays adjacent to the guided rays, we obtain more accurate guided wave solutions. Calculated results are in excellent agreement with wave optics solutions.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e77-c_4_639/_p

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@ARTICLE{e77-c_4_639,
author={Masahiro HASHIMOTO, Hiroyuki HASHIMOTO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Ray-Optical Techniques in Dielectric Waveguides},
year={1994},
volume={E77-C},
number={4},
pages={639-646},
abstract={We describe a geometrical optics approach for the analysis of dielectric tapered waveguides. The method is based on the ray-optical treatment for wave-normal rays defined newly to waves of light in open structures. Geometrical optics fields are represented in terms of two kinds of wave-normal rays: leaky rays and guided rays. Since the behavior of these rays is different in the two regions separated at critical incidence, the geometrical optics fields have certain classes of discontinuity in a transition region between leaky and guided regions. Guided wave solutions are given as a superposition of guided rays that zigzag along the guides, all of which are totally reflected upon the interfaces. By including some leaky rays adjacent to the guided rays, we obtain more accurate guided wave solutions. Calculated results are in excellent agreement with wave optics solutions.},
keywords={},
doi={},
ISSN={},
month={April},}

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TY - JOUR
TI - Ray-Optical Techniques in Dielectric Waveguides
T2 - IEICE TRANSACTIONS on Electronics
SP - 639
EP - 646
AU - Masahiro HASHIMOTO
AU - Hiroyuki HASHIMOTO
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E77-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 1994
AB - We describe a geometrical optics approach for the analysis of dielectric tapered waveguides. The method is based on the ray-optical treatment for wave-normal rays defined newly to waves of light in open structures. Geometrical optics fields are represented in terms of two kinds of wave-normal rays: leaky rays and guided rays. Since the behavior of these rays is different in the two regions separated at critical incidence, the geometrical optics fields have certain classes of discontinuity in a transition region between leaky and guided regions. Guided wave solutions are given as a superposition of guided rays that zigzag along the guides, all of which are totally reflected upon the interfaces. By including some leaky rays adjacent to the guided rays, we obtain more accurate guided wave solutions. Calculated results are in excellent agreement with wave optics solutions.
ER -