A photonic crystal fiber sensor based on differential optical absorption spectroscopy for mixed gases detection

Wu, Baoqun; Lü, Ying; Hao, Congjing; Duan, Liangcheng; Musideke, Mayilamu; Yao, Jianquan

doi:10.1016/j.ijleo.2013.11.016

Cited by 7 publications

(1 citation statement)

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“…Optical sensors have shown their promise in the field of biological and chemical sensing applications. Different sensing mechanisms including refractive index (RI) sensing, absorption sensing and florescence sensing have been explored [1][2][3][4]. Currently, most of optical sensors use external detectors and signal processing units to measure their sensing parameters [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneously integrated optical detection platform for on-chip sensing applications

Chaudhuri

Song

Seo

2015

J. Opt.

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This paper introduces a resonant waveguide grating (RWG) integrated with a photodetector for on-chip sensing applications. An inverted thin film indium gallium arsenide (InGaAs) metal–semiconductor–metal photodetector is heterogeneously integrated on silicon dioxide (SiO2)/ silicon substrate using fluidic self-assembly. The inverted optical waveguide and the RWG structure are subsequently fabricated utilizing layer-by-layer post-processing techniques. Detailed electrical, optical, and optoelectronic characterization were performed to analyze the functionality of the sensing platform. This approach can open new avenues allowing the development of low-cost complementary metal-oxide semiconductor compatible integrated optical sensors.

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