Biosensing using microring resonator interferograms

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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 mm and height of 0.26 mm.

Original languageEnglish
Pages (from-to)1184-1194
Number of pages11
JournalSensors (Switzerland)
Volume14
Issue number1
DOIs
Publication statusPublished - 2013

Fingerprint

Refractometry
Resonators
interferometry
Silicon
resonators
Interferometry
Refractive index
glucose
refractivity
Glucose
wire
Wire
Q factors
silicon
Optical Devices
Distributed feedback lasers
sensitivity
Lasers
couplers
Polarization

ASJC Scopus subject areas

  • Medicine(all)

Cite this

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

Biosensing using microring resonator interferograms. / Hsu, Shih Hsiang; Yang, Yung Chia; Su, Yu Hou; Wang, Sheng Min; Huang, Shih An; Lin, Ching-Yu.

In: Sensors (Switzerland), Vol. 14, No. 1, 2013, p. 1184-1194.

Research output: Contribution to journalArticle

Hsu, SH, Yang, YC, Su, YH, Wang, SM, Huang, SA & Lin, C-Y 2013, 'Biosensing using microring resonator interferograms', Sensors (Switzerland), vol. 14, no. 1, pp. 1184-1194. https://doi.org/10.3390/s140101184
Hsu, Shih Hsiang ; Yang, Yung Chia ; Su, Yu Hou ; Wang, Sheng Min ; Huang, Shih An ; Lin, Ching-Yu. / Biosensing using microring resonator interferograms. In: Sensors (Switzerland). 2013 ; Vol. 14, No. 1. pp. 1184-1194.
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