Journal of Applied Sciences ›› 2017, Vol. 35 ›› Issue (4): 503-522.doi: 10.3969/j.issn.0255-8297.2017.04.005

• Optical Fiber Sensors Technology • Previous Articles     Next Articles

In-Fiber Integrated Optofluidic Sensors

YANG Xing-hua, YUAN Ting-ting, ZHAO Qi-kai, ZHOU Mei-hua   

  1. Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, China
  • Received:2017-04-24 Online:2017-07-30 Published:2017-07-30

Abstract:

In-fiber integrated optics has important prospects in optofluidic device applications as it can realize convenient optical coupling and increase the integration level of the devices. Microstructured optical fibers have microholes with diameters in the micrometer scale, and contain gas or liquid with volumes in the scale of microlitre or nanoliter. Therefore, these fibers are desired carriers in trace detection. The one-dimensional holy structure provides a long cell for the contraction between samples and waveguide, breaking the limitation of traditional optical fiber optics and having irreplaceable advantages in the field of detection and analysis. This paper introduces a series of optical in-fiber integrated optofluidic devices based on special designed optical fibers such as twin-core fiber and suspended-core fiber. Some simple prototypes are described to show the realization of the structures and functions of in-fiber detection. These include detection of refractive index, gas pressure, chemiluminiscence and fluorescence, and also include electrophoresis separation and detection.

Key words: in-fiber integrated, optical fiber sensor, microstructured optical fiber, microfluidic

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