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Optical Engineering

Integrated optical circulator based on radiatively coupled magneto-optic waveguides
Author(s): Manfred Lohmeyer; Mikhail Shamonin; Peter Hertel
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Paper Abstract

In a three-guide coupler with multimode central waveguide, more than two modes of the entire structure participate in the coupling between the outer waveguides. Using a three-mode approximation we found simple conditions for complete power transfer between the outer waveguides: the device length has to match certain multiples of the conventionally defined coupling length. The specific form of the relevant modes allows us to design a magneto-optic isolator or circulator with significantly reduced device length (as compared to the conventional nonreciprocal coupler). The performance of the proposed devices is simulated by propagating-mode calculations. Estimates for admissible fabrication tolerances for the layer thicknesses are presented.

Paper Details

Date Published: 1 March 1997
PDF: 7 pages
Opt. Eng. 36(3) doi: 10.1117/1.601255
Published in: Optical Engineering Volume 36, Issue 3
Show Author Affiliations
Manfred Lohmeyer, Univ. Osnabrueck (Netherlands)
Mikhail Shamonin, Univ. Osnabrueck (Germany)
Peter Hertel, Univ. Osnabrueck (Germany)

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