A magneto-optical isolator (20) for an optical circuit. The isolator includes a substrate, and an optical channel (350) disposed next to the substrate. The optical channel and substrate are configured to transmit optical radiation within the optical channel. The isolator further includes a photonic-crystal...http://www.google.es/patents/US6952300?utm_source=gb-gplus-sharePatente US6952300 - Magneto-photonic crystal isolators
