Title

Determination Of Volume And Surface Contributions To The Total Attenuation In Zns Wave-Guides

Title - Alternative

Appl. Optics

Keywords

Optical-Waveguides; Substrate-Temperature; Thin-Films; Scattering; Losses; Optics

Abstract

We relate the modal waveguide attenuation of polycrystalline ZnS films to their mode field properties, namely the field amplitudes at the interfaces and the power confinement factor, to show that the total waveguide attenuation is caused by a combination of volume and surface effects. Our results show that the surface losses for the TE0 mode, which are approximately 1.5 dB/cm, are independent of the total attenuation, which varies from 6 to 40 dB/cm. This suggests that the losses of the lower-order modes are dominated by volume effects such as scattering from crystallite boundaries and absorption.

Publication Title

Applied Optics

Volume

32

Issue/Number

18

Publication Date

1-1-1993

Document Type

Article

Language

English

First Page

3306

Last Page

3311

WOS Identifier

WOS:A1993LG68600019

ISSN

0003-6935

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