Abstract

We designed a microwave (MW) photonics phase shifter, consisting of a Fabry–Perot filter, a phase modulation region (PMR), and distributed Bragg reflectors, in a silicon-on-insulator rib waveguide. The thermo-optics effect was employed to tune the PMR. It was theoretically demonstrated that the linear MW phase shift of 02π could be achieved by a refractive index variation of 09.68×103 in an ultrawideband (about 38GHz1.9THz), and the corresponding tuning resolution was about 6.92°/°C. The device had a very compact size. It could be easily integrated in silicon optoelectronic chips and expected to be widely used in the high-frequency MW photonics field.

© 2010 Optical Society of America

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