Effects of roughness in the side walls of optical waveguides on propagation loss

Kunihiko Asama; Tadashi Warikai; Hiroaki Kurokawa; Michiko Kuroda; Hiroyuki Kasai

doi:10.1117/12.386777

24 May 2000 Effects of roughness in the side walls of optical waveguides on propagation loss

Kunihiko Asama, Tadashi Warikai, Hiroaki Kurokawa, Michiko Kuroda, Hiroyuki Kasai

Proceedings Volume 4089, Optics in Computing 2000; (2000) https://doi.org/10.1117/12.386777
Event: 2000 International Topical Meeting on Optics in Computing (OC2000), 2000, Quebec City, Canada

Abstract

In this study we analyze the optical propagation properties due to the roughness of side walls in waveguides (core regions), which is inherent in the patterning processes such as RIE, UV curing and so on. In the analysis we evaluate the increase in loss due to the side-wall roughness, where the width of waveguides vary sinusoidally and randomly in the models. As a parameter, we pay attention to the relative refractive index different between the core and clad regions. The Finite-Difference Beam Propagation Method is used in the simulation. It is found that the increase in loss depends on the period varied in waveguides and the maximum value of loss is about 0.2 dB/cm in present conditions. However the large value of loss more than 1 dB/cm appears noticeably in some specific periods, and this is discussed using the Brillouin diagram.

Citation Download Citation

Kunihiko Asama, Tadashi Warikai, Hiroaki Kurokawa, Michiko Kuroda, and Hiroyuki Kasai "Effects of roughness in the side walls of optical waveguides on propagation loss", Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000); https://doi.org/10.1117/12.386777

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available