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Journal Article
A Compact Tunable VCSEL and a Built-in Wavelength Meter for a Portable Optical Resonant Reflection Biosensor Reader
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- Authors
- Hyunsung Ko, Bong Kyu Kim, Kyung Hyun Kim, Chul Huh, Wan-Joong Kim, Jongcheol Hong, Seon Hee Park, Seong-Seok Yang, Ho-Jin Jang, Gun Yong Sung
- Issue Date
- 2010-12
- Citation
- Journal of the Optical Society of Korea, v.14, no.4, pp.395-402
- ISSN
- 1226-4776
- Publisher
- Optical Society of America (OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- This study reports a portable and precision photonic biosensor reader that can measure the concentration of a particular antigen using an optical resonant reflection biosensor (ORRB). To create a compact biosensor reader, a compact tunable vertical-cavity surface-emitting laser (VCSEL) and a compact built-in wavelength meter were manufactured. The wavelength stability and accuracy of the compact built-in wavelength meter were measured to be less than 0.02 nm and 0.06 nm, respectively. The tunable VCSEL emission wavelength was measured with the compact built-in wavelength meter, it has a fast sweep time (~ 10 seconds) and a wide tuning range (> 4 nm) that are sufficient for biosensor applications based on ORRB. The reflection spectrum of a plastic based ORRB chip was measured by the fabricated portable photonic biosensor reader using the VCSEL and wavelength meter. Although the reader is the size of a palmtop device, it could make a precise measurement of the peak wavelength on equal terms with a conventional bulky optical spectrometer.
- KSP Keywords
- Built-in, Optical spectrometer, Peak wavelength, Photonic biosensor, Precise measurement, Reflection spectrum, Resonant reflection, Stability and accuracy, Tunable VCSEL, Vertical-cavity surface-emitting laser, Wavelength Meter(WM)