Index profile design for high-bandwidth W-shaped plastic optical fiber

Author

Takahashi, Keita ; Ishigure, Takaaki ; Koike, Yasuhiro

Author_Institution

Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan

Volume

24

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

2867

Lastpage

2876

Abstract

Modal dispersion in plastic optical fibers with W-shaped refractive index profiles (W-shaped POFs) is investigated. The authors focus on the effect of the refractive index valley at the boundary of core and cladding on the group delay. In this paper, particularly, the relationship between the depth of the index valley and the modal dispersion is highlighted. In order to analyze the relationship precisely, the authors prepare the W-shaped POFs with a high numerical aperture (NA ∼ 0.25), which are expected to show the effect of W-shaped profile more clearly than the W-shaped POFs with an NA of 0.2. As a result, the modal dispersion is strongly dependent on the depth of the index valley, which means that the control of the index valley is required, in order for minimum modal dispersion. Furthermore, by evaluating the output pulsewidth from the W-shaped POFs, the authors design the optimum index valley for the maximum bandwidth performance.

Keywords

optical communication equipment; optical design techniques; optical fibre communication; optical fibre dispersion; refractive index; W-shaped plastic optical fiber; core-cladding boundary; group delay; index valley; modal dispersion; refractive index profile design; Apertures; Bandwidth; Costs; Ethernet networks; Optical coupling; Optical design; Optical fiber dispersion; Optical fibers; Plastics; Refractive index; Modal dispersion; W-shaped index profile; numerical aperture (NA); plastic optical fiber (POF);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2006.876090

Filename

1650563