Abstract
The authors demonstrate a highly sensitive chemical sensor scheme based on Si3N4 channel waveguides, species-selective surface coatings and Zeeman interferometry. The relative phase change between the TE and TM modes under exposure to toluene vapour is measured. The measurements demonstrate the real-time and reversible response with good sensitivity at low concentrations.
Original language | English (US) |
---|---|
Pages (from-to) | 1651-1653 |
Number of pages | 3 |
Journal | Electronics Letters |
Volume | 33 |
Issue number | 19 |
DOIs | |
State | Published - Sep 11 1997 |
Keywords
- Chemical sensors
- Light interferometry
- Optical waveguides
ASJC Scopus subject areas
- Electrical and Electronic Engineering