Microfluidic refractive-index sensors based on small-hole microstructured optical fiber Bragg gratings

Aping Zhang, Guofeng Yan, Shaorui Gao, Sailing He, Bongkyun Kim, Jooeun Im, Youngjoo Chung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

31 Citations (Scopus)


A microstructured optical fiber (MOF) Bragg grating is presented for microfluidic sensing applications. The MOF is specially designed to be with a large amount of microholes for developing ultrasensitive sensors based on inner coating and surface effects. With the fabrication of fiber Bragg grating (FBG), such an MOF sensor has been demonstrated for monitoring the fluid flowing through microholes. Experimental results reveal that the sensitivity of the sensor depends on both the refractive-index range of measurement and the order of fiber modes. The temperature dependency of the sensor has also been measured and compared with that of conventional FBGs.
Original languageEnglish
Article number221109
JournalApplied Physics Letters
Issue number22
Publication statusPublished - 30 May 2011
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this