INTEGRATED OPTICAL CIRCULATOR BASED ON RADIATIVELY COUPLED MAGNETOOPTIC WAVE-GUIDES

Citation
M. Lohmeyer et al., INTEGRATED OPTICAL CIRCULATOR BASED ON RADIATIVELY COUPLED MAGNETOOPTIC WAVE-GUIDES, Optical engineering, 36(3), 1997, pp. 889-895
Citations number
16
Categorie Soggetti
Optics
Journal title
ISSN journal
00913286
Volume
36
Issue
3
Year of publication
1997
Pages
889 - 895
Database
ISI
SICI code
0091-3286(1997)36:3<889:IOCBOR>2.0.ZU;2-P
Abstract
In a three-guide coupler with multimode central waveguide, more than t wo modes of the entire structure participate in the coupling between t he outer waveguides. Using a three-mode approximation we found simple conditions for complete power transfer between the outer waveguides: t he device length has to match certain multiples of the conventionally defined coupling length. The specific form of the relevant modes allow s us to design a magneto-optic isolator or circulator with significant ly reduced device length (as compared to the conventional nonreciproca l coupler). The performance of the proposed devices is simulated by pr opagating-mode calculations. Estimates for admissible fabrication tole rances for the layer thicknesses are presented. (C) 1997 Society of Ph oto-Optical Instrumentation Engineers.