In-line photonic crystal fiber optofluidic refractometer

Chuang Wu, Ming Leung Vincent Tse, Zhengyong Liu, Aping Zhang, Bai Ou Guan, Hwa Yaw Tam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


We report the fabrication and characterization of an in-line photonic crystal fiber optofluidic refractometer assisted by a C-shaped fiber. The C-shaped fiber spliced between the PCF and the SMF enables simultaneous in-line optical signal delivery and analyte fluid feeding. Using an arc discharge technique, we achieve selective exploitation of only the central two voids of the PCF for microfluidic sensing. Based on a Sagnac interferometer, a highly sensitive refractometer with sensitivity of 8699 nm/RIU and detection limit of 10-6for RI around 1.333 was achieved experimentally, which agrees well with the theoretical value of 8675 nm/RIU.
Original languageEnglish
Title of host publication23rd International Conference on Optical Fibre Sensors
ISBN (Print)9781628411751
Publication statusPublished - 1 Jan 2014
Event23rd International Conference on Optical Fibre Sensors - Santander, Spain
Duration: 2 Jun 20146 Jun 2014


Conference23rd International Conference on Optical Fibre Sensors


  • Fiber-optic sensor
  • Optofluidics
  • Photonic crystal fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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