Articles

Integrated optical circulator based on radiatively coupled magneto-optic waveguides

[+] Author Affiliations
Manfred Lohmeyer, Mikhail Shamonin, Peter Hertel

University of Osnabru¨ck Department of Physics Barbarastraße 7 D-49069 Osnabru¨ck, Germany lohmeyer@physik.uni-osnabrueck.de

Opt. Eng. 36(3), 889-895 (Mar 01, 1997). doi:10.1117/1.601255
History: Received July 10, 1996; Accepted Oct. 17, 1996
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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. © 1997 Society of Photo-Optical Instrumentation Engineers.

Key words: integrated optics; radiatively coupled waveguides; three-guide coupler; magneto-optic isolator; magneto-optic circulator.

© 1997 Society of Photo-Optical Instrumentation Engineers

Citation

Manfred Lohmeyer ; Mikhail Shamonin and Peter Hertel
"Integrated optical circulator based on radiatively coupled magneto-optic waveguides", Opt. Eng. 36(3), 889-895 (Mar 01, 1997). ; http://dx.doi.org/10.1117/1.601255


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