Magneto-optical Microring Switch Based on Amorphous Silicon-on-Garnet Platform for Photonic Integrated Circuits

Toshiya MURAI, Yuya SHOJI, Nobuhiko NISHIYAMA, Tetsuya MIZUMOTO
2020 IEICE transactions on electronics  
Magneto-optical (MO) switches operate with a dynamically applied magnetic field. The MO devices presented in this paper consist of microring resonators (MRRs) fabricated on amorphous silicon-ongarnet platform. Two types of MO switches with MRRs were developed. In the first type, the switching state is controlled by an external magnetic field component included in the device. By combination of MO and thermooptic effects, wavelength tunable operation is possible without any additional heater, and
more » ... itional heater, and broadband switching is achievable. The other type of switch is a self-holding optical switch integrated with an FeCoB thin-film magnet. The switching state is driven by the remanence of the integrated thin-film magnet, and the state is maintained without any power supply.
doi:10.1587/transele.2019ocp0003 fatcat:2ydkfroy4baynotlkpujlsxfye