Design of 45 degree waveguide isolators

Hans Dammann

doi:10.1117/12.20502

1 August 1990 Design of 45 degree waveguide isolators

Hans Dammann

Proceedings Volume 1274, Electro-Optic and Magneto-Optic Materials II; (1990) https://doi.org/10.1117/12.20502
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

Optical waveguide isolators are required in advanced fiber communication systems. The simplest type is the 45°-waveguide-isolator based on magnetooptic channel waveguides. The problem of phase mismatch can be solved simply by choosing a proper angle of preferably 22.5° between the input polarization and the direction of the TE polarization of the waveguide. Mode coupling in this configuration is analysed using "coupling tracks" on the Poincar sphere. First experiments demonstrate that more than 30dB isolation is feasible in practical devices. From these results, design rules for 45°waveguide isolators are obtained.

Citation Download Citation

Hans Dammann "Design of 45 degree waveguide isolators", Proc. SPIE 1274, Electro-Optic and Magneto-Optic Materials II, (1 August 1990); https://doi.org/10.1117/12.20502

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