Abstract
This paper provides a straightforward design method for achieving a maximum wavelength resolution for an edge filter-based ratiometric system. An analysis of the influence of a range of factors on the resolution of the ratiometric wavelength measurement system was carried out. The investigation shows that, for a given input optical signal and when the working wavelength range is known, it is relatively straightforward to select an optimum slope for the edge filter that will yield a maximum resolution for the system. An experimental verification is carried out using a tunable laser and three macrobending fibre edge filters, with a good match between experimental and simulation results.
| Original language | English |
|---|---|
| Pages (from-to) | 1032-1037 |
| Number of pages | 6 |
| Journal | Optics and Laser Technology |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Sep 2010 |
Keywords
- Edge filter
- Ratiometric system
- SNR