Abstract
A novel all-polymer fiber-optic pH sensor using a UV-cured pH-sensitive hydrogel, poly(ethylene glycol) diacrylate (PEGDA), coated on a polymer fiber Bragg grating was developed. The PEGDA increased in volume according to the pH value of the surrounding fluid, which subsequently induced a lateral stress in the polymer fiber Bragg grating. The proposed pH sensor exhibits a pH sensitivity of up to −0.41 nm/pH and a fast response time of 30 s.
| Original language | English |
|---|---|
| Pages (from-to) | 14610-14616 |
| Number of pages | 7 |
| Journal | Optics Express |
| Volume | 26 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 28 May 2018 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics