Optical circulators in two-dimensional magneto-optical photonic crystals
2005; Optica Publishing Group; Volume: 30; Issue: 15 Linguagem: Inglês
10.1364/ol.30.001989
ISSN1539-4794
Autores Tópico(s)Fern and Epiphyte Biology
ResumoWe propose an optical circulator formed of a magneto-optical cavity in a 2D photonic crystal. With spatially engineered magnetic domain structures, the cavity can be designed to support a pair of counterrotating states at different frequencies. By coupling the cavity to three waveguides, and by proper matching of the frequency split of the cavity modes with the coupling strength between the cavity and the waveguide, ideal three-port circulators with complete isolation and transmission can be created. We present a guideline for domain design needed to maximize the modal coupling and the operational bandwidth for any given magneto-optical constant.
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