Abstract
Optoelectronic chromatic dispersion (OED) of a PN-type germanium photodiode is used for spectral sensing of ethanol concentration in water. A concentration sensitivity of 70 ppm is achieved. Spectral sensors based on OED in PN-type photodiodes can serve as low-cost on-chip devices for optical spectroscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 5076-5079 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 47 |
| Issue number | 19 |
| DOIs | |
| State | Published - 1 Oct 2022 |