Propagation Properties of Optical Modes in Dielectric Thin Film Fiber with Convex Surface ----by Conformal Mapping Technique

Author

Miyazaki, Yasumitsu

Author_Institution

Institut fÃ¿r Hochfrequenztechnik, Technische UniversitÃ¿t Braunschweig Bundesrepublik Deutschland. On leave of absence from Department of Electrical Engineering, Faculty of Engineering, Nagoya University, Japan.

fYear

1974

fDate

10-13 Sept. 1974

Firstpage

420

Lastpage

424

Abstract

Single material fibers made of low loss material may be superior to cladded or mixed material fibers with respect to optical propagation properties concerned with absorption losses. Thin film fibers with convex surface have self focussing properties similar to those of inhomogeneous fibers with quadratic index profile. By using the method of conformal mapping fundamental characteristics of guided modes in optical films with convex surfaces are found. Transverse fields of guided modes have Hermite Gaussian properties. Spot sizes of guided modes are inversely proportional to square roots of the product of wave constant Â¿ÃŸ2 1-ÃŸ2 z and quadratic coefficient of convex surface (l+a)lox. Dispersion characteristics of the guided modes are discussed.

Keywords

Absorption; Conformal mapping; Dielectric materials; Dielectric thin films; Optical fiber losses; Optical films; Optical materials; Optical propagation; Optical surface waves; Propagation losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1974. 4th European

Conference_Location

Montreux, Switzerland

Type

conf

DOI

10.1109/EUMA.1974.332085

Filename

4130726