Journal of Atmospheric and Environmental Optics ›› 2009, Vol. 4 ›› Issue (6): 462-468.

• 论文 • Previous Articles     Next Articles

Study of A Novel Gas Sensor With Optical Filter Sensor Based on Micro-Ring Resonator

TU Xing-hua1,2   

  1. (1 Microfluidics and Optics Technology Research Center, Nanjing University of Posts and Telecommunications,Nanjing 210003, China; 2 Microwave-Photonics Technology Laboratory, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China)
  • Received:2009-07-20 Revised:2009-09-14 Online:2009-11-28 Published:2009-11-17

Abstract:

Optical fiber gas sensing technology based on micro-ring resonator is a new measuring technique, which has a wide applicable prospect in the fields of industrial production, environment monitoring and medical science. There is a micro-ring structure in the gas sensor based on absorption spectroscopy, which has some advantages of the compact whole fabric and perfect wavelength selectivity. According to numerical analysis about the characteristic of spectrum absorption of specific gas and micro-ring resonator, a normal design of optical fiber detection system of gas is presented and discussed, which has micro-ring optical filter. The theory of micro-ring resonator is mainly introduced. And the relation among the size of the micro-ring, resonance wavelength and freedom spectrum range are discussed in detail.

Key words: filtering, micro-ring resonator, gas sensing, freedom spectrum range

CLC Number: