Abstract
We report experimental measurements of reversible wavelength tuning, chirping and permanent thermally induced decay of type 1A fibre Bragg gratings using purely optical means. The grating properties are modified in a controlled manner by utilising the characteristics of the intrinsic 1400nm absorption band of the optical fibre and two tuneable lasers coincident with that band. It is shown that the type 1A grating can be selectively tuned in a grating network and that selective tuning can be attained in a common section of suitably prepared optical fibre. Applications of this approach for tuning fibre lasers or edge filter modification in sensing applications are discussed.
| Original language | English |
|---|---|
| Article number | 220 |
| Pages (from-to) | 896-899 |
| Number of pages | 4 |
| Journal | Proceedings of SPIE - International Society for Optical Engineering |
| Volume | 5855 |
| Issue number | PART II |
| DOIs | |
| Publication status | Published - 23 May 2005 |
| Event | 17th international conference on Optical Fibre Sensors - Bruges, Belgium Duration: 23 May 2005 → 27 May 2005 |
Bibliographical note
Copyright 2005 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.Keywords
- Fibre Bragg gratings
- Optical fibre sensors
- Photosensitivity
- Type 1A grating
- Wavelength tuning