On-chip optical isolator using surface acoustic wave

Jesse Mak, M.A. Garcia Porcel, P.J.M. van der Slot, Klaus J. Boller

Research output: Contribution to conferencePosterOther research output


A major issue in integrated optics is the protection of on-chip lasers against undesired external feedback. In non-integrated systems, undesired reflections can be easily blocked using Faraday isolators. However, Faraday isolators require magneto-optic materials, which are difficult to integrate into compact devices. Yu and Fan [1] have proposed a non-magnetic integrated isolator, in which a transverse mode of an optical waveguide is converted to another transverse mode only for a single propagation direction. However, the best implementation
so far [2], based on a transversely non-uniform index modulation in a semiconductor, showed high losses. We present a novel design to achieve such a modulation in lowloss dielectric waveguides, using surface acoustic waves. We theoretically describe how to realize the two most essential features, which are a short interaction length and a wide isolation bandwidth..
Original languageEnglish
Publication statusPublished - 10 Oct 2017
Event41st Annual Meeting NNV AMO Lunteren 2017 - Lunteren, Netherlands
Duration: 10 Oct 201711 Oct 2017
Conference number: 41


Conference41st Annual Meeting NNV AMO Lunteren 2017
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