Tapered optical fiber sensor based on localized surface plasmon resonance

Hsing Ying Lin, Chen Han Huang, Gia Ling Cheng, Nan Kuang Chen, Hsiang Chen Chui

Research output: Contribution to journalArticlepeer-review

180 Citations (Scopus)


A tapered fiber localized surface plasmon resonance (LSPR) sensor is demonstrated for refractive index sensing and label-free biochemical detection. The sensing strategy relies on the interrogation of the transmission intensity change due to the evanescent field absorption of immobilized gold nanoparticles on the tapered fiber surface. The refractive index resolution based on the interrogation of transmission intensity change is calculated to be 3.2 × 10-5 RIU. The feasibility of DNP-functionalized tapered fiber LSPR sensor in monitoring anti-DNP antibody with different concentrations spiked in buffer is examined. Results suggest that the compact sensor can perform qualitative and quantitative biochemical detection in real-time and thus has potential to be used in biomolecular sensing applications.

Original languageEnglish
Pages (from-to)21693-21701
Number of pages9
JournalOptics Express
Issue number19
Publication statusPublished - 2012 Sept 10

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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