Reconfigurable Frequency-Selective Resonance Splitting in Chalcogenide Microring Resonators

• DOI: 10.1021/acsphotonics.9b01593
• Publication Date: 2020-01-08T23:07:02Z
• Authors: Bin Shen; Hongtao Lin; Saeed Sharif Azadeh; Jovana Nojic; Myungkoo Kang; Florian Merget; Kathleen A. Richa...; Juejun Hu; Jeremy Witzens
• Keywords: Fiber Bragg Grating; Erasure

This paper reports a method to enable, for the first time, reconfigurable control of resonance splitting one or multiple arbitrarily selected azimuthal orders in microring resonator. is accomplished by inscribing Bragg gratings photosensitive Ge23Sb7S70 chalcogenide resonators via novel cavity-enhanced photoinscription process, which injection light at targeted C-band frequency induces spatially varying refractive index change. The so-formed grating precisely matches order without introducing optical losses. Long-term room temperature stability photoinscribed has been verified darkness and during operation with reduced power levels. can be reconfigured erasure flood illumination visible 561 nm subsequent reinscription. We also report controlled resonances superimposed gratings.