High quality chalcogenide-silica hybrid wedge resonator

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Chalcogenide glasses, with high nonlinearity and low loss, have captured research interest as an integrated device platform for near-and mid-infrared nonlinear optical devices. Compared to silicon-based microfabrication technologies, chalcogenide fabrication processes are less mature and a major challenge is obtaining high quality devices. In this paper, we report a hybrid resonator design leveraging a high quality silica resonator to achieve high Q factors with chalcogenide. The device is composed of a thin chalcogenide layer deposited on a silica wedge resonator. The hybrid resonators exhibit loaded Q factors up to 1.5 x 10(5) in the near-infrared region. We also measured the effective thermo-optic coefficient of the device to be 5.5x10(-5)/K, which agreed well with the bulk value. Thermal drift of the device can be significantly reduced by introducing a titanium dioxide cladding layer with a negative thermo-optic coefficient. (C) 2017 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2017-06
Language
English
Article Type
Article
Keywords

WAVE-GUIDES; MICRODISK RESONATORS; MICRORING RESONATORS; INDEX; GLASS; CHIP; PHOTONICS; DEVICES; FILMS; IR

Citation

OPTICS EXPRESS, v.25, no.13, pp.15581 - 15589

ISSN
1094-4087
DOI
10.1364/OE.25.015581
URI
http://hdl.handle.net/10203/224870
Appears in Collection
NT-Journal Papers(저널논문)
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