Modal field deformation and transition losses in UV side-written optical fibers

Authors
Renner, H Johlen, D Brinkmeyer, E
Citation
H. Renner et al., Modal field deformation and transition losses in UV side-written optical fibers, APPL OPTICS, 39(6), 2000, pp. 933-940
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
APPLIED OPTICS
ISSN journal
00036935 → ACNP
Volume
39
Issue
6
Year of publication
2000
Pages
933 - 940
Database
ISI
SICI code
0003-6935(20000220)39:6<933:MFDATL>2.0.ZU;2-H
Abstract
The asymmetry of the W-induced refractive-index profile in photosensitive o ptical fibers causes a deformation of the modal fields, resulting in transi tion losses between W-exposed and unexposed fiber sections up to 0.1 dB for W-induced index changes of the order of less than or equal to 10(-2) A num erical analysis of the transition losses is developed. It is verified exper imentally that the loss is caused by coupling of power of the fundamental m ode to cladding modes at such a transition. (C) 2000 Optical Society of Ame rica.