Spiral Waveguides on Germanium-on-Silicon Nitride Platform for Mid-IR Sensing Applications

Wei Li,P. Anantha,Kwang Hong Lee,Hao Dong Qiu,Xin Guo,Simon Chun Kiat Goh,Lin Zhang,Hong Wang,Richard A. Soref,Chuan Seng Tan

IEEE Photonics Journal（2018）

引用 24|浏览9

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摘要

Spiral waveguides on a new germanium-on-silicon nitride (GON) platform with a wide transparency and a large core-clad index contrast for mid-infrared (mid-IR) sensing applications are demonstrated. Spiral waveguide sensors with a low bending loss on this platform enable compact sensors for mid-IR absorption spectroscopy. A minimum volumetric concentration of 5% isopropanol (IPA) in an IPA-acetone ...

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关键词

Optical waveguides,Sensors,Spirals,Absorption,Silicon,Propagation losses

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