Abstract
This study proposes a chemical vapor sensor using whispering gallery modes excited in an optical fiber-based resonator. A standard optical fiber with its plastic buffer removed is coated with a polymer layer to act as the vapor-sensitive optical resonator. Theoretical simulations of the sensor response, including the refractive index sensitivity and detection limit, are performed as a function of the polymer layer thickness. Calculations show that the sensor exhibits a very good linearity and a low detection limit on the order of 10 6 refractive index unit. The theoretical predications also provide guidelines for the design and fabrication of optical fiber-based whispering gallery mode resonators in chemical sensing.
Original language | English |
---|---|
Pages (from-to) | 263-276 |
Number of pages | 14 |
Journal | Fiber and Integrated Optics |
Volume | 31 |
Issue number | 4 |
DOIs | |
Publication status | Published - 27 Jul 2012 |
Keywords
- chemical vapor sensor
- optical micro-resonator
- polymer
- whispering gallery modes