Light-propagation characteristics in thermally diffused expanded core fibers

Author

Shiraishi, Kazuo ; Yanagi, Takuya ; Kawakami, Shojiro

Author_Institution

Fac. of Eng., Utsunomiya Univ., Japan

Volume

11

Issue

10

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

1584

Lastpage

1591

Abstract

Characteristics of light propagation in thermally diffused expanded-core (TEC) fibers are analyzed. Changes in the modal-field distributions along fibers and transition losses are obtained by use of the propagating-beam method. It is found that a transition length sufficiently longer than the characteristic length is necessary to expand or reduce the field diameter with low losses. A simplified model for understanding the mechanism of light propagation in TEC fibers is presented. Transmission losses between TEC fibers having imperfect splices are measured, the results are compared with those obtained by a simple theory and an exact theory

Keywords

optical fibre theory; optical losses; characteristic length; field diameter; imperfect splices; light-propagation characteristics; low losses; modal-field distributions; propagating-beam method; thermally diffused expanded core fibers; transition length; transition losses; transmission losses; Loss measurement; Optical devices; Optical fiber communication; Optical fiber devices; Optical fiber losses; Optical fiber sensors; Optical fiber theory; Optical propagation; Propagation losses; Thermal expansion;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.249900

Filename

249900