D-type fiber biosensor based on surface-plasmon resonance technology and heterodyne interferometry

Ming Hung Chiu, Shinn Fwu Wang, Rong Seng Chang

研究成果: 雜誌貢獻期刊論文同行評審

128 引文 斯高帕斯(Scopus)

摘要

A D-type fiber biosensor based on surface-plasmon resonance (SPR) technology and heterodyne interferometry is presented. The sensing device is a single-mode optical fiber in which half the core is polished away and a thin-film layer of gold is deposited. We measure the phase-difference variations instead of the light intensity as in traditional SPR techniques. Therefore the accuracy and resolution of our method are very high. Its sensitivity can reach 2 × 10-6 refractive-index units. The sensor has some merits, e.g., tunable high sensitivity, small size, lower cost, smaller sample volume, and suitability for in vivo testing. This novel method of a D-type fiber biosensor based on SPR technology and heterodyne interferometry is valuable for chemical, biological, and biochemical sensing, and the novel method of D-type fiber biosensing is a feasible means of study.

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頁(從 - 到)233-235
頁數3
期刊Optics Letters
30
發行號3
DOIs
出版狀態已出版 - 1 2月 2005

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