Biosensing using microring resonator interferograms

Shih Hsiang Hsu, Yung Chia Yang, Yu Hou Su, Sheng Min Wang, Shih An Huang, Ching-Yu Lin

研究成果: 雜誌貢獻文章

2 引文 斯高帕斯(Scopus)

摘要

Optical low-coherence interferometry (OLCI) takes advantage of the variation in refractive index in silicon-wire microring resonator (MRR) effective lengths to perform glucose biosensing using MRR interferograms. The MRR quality factor (Q), proportional to the effective length, could be improved using the silicon-wire propagation loss and coupling ratio from the MRR coupler. Our study showed that multimode interference (MMI) performed well in broad band response, but the splitting ratio drifted to 75/25 due to the stress issue. The glucose sensing sensitivity demonstrated 0.00279 meter per refractive-index-unit (RIU) with a Q factor of ~30,000 under transverse electric polarization. The 1,310 nm DFB laser was built in the OLCI system as the optical ruler achieving 655 nm characterization accuracy. The lowest sensing limitation was therefore 2 × 10-4 RIU. Moreover, the MRR effective length from the glucose sensitivity could be utilized to experimentally demonstrate the silicon wire effective refractive index with a width of 0.45 μm and height of 0.26 μm.
原文英語
頁(從 - 到)1184-1194
頁數11
期刊Sensors (Switzerland)
14
發行號1
DOIs
出版狀態已發佈 - 2013

ASJC Scopus subject areas

  • Medicine(all)

指紋 深入研究「Biosensing using microring resonator interferograms」主題。共同形成了獨特的指紋。

  • 引用此

    Hsu, S. H., Yang, Y. C., Su, Y. H., Wang, S. M., Huang, S. A., & Lin, C-Y. (2013). Biosensing using microring resonator interferograms. Sensors (Switzerland), 14(1), 1184-1194. https://doi.org/10.3390/s140101184