We present a compact scheme for simultaneous temperature and surrounding refractive index (SRI) measurement using two long period gratings (LPGs) of different periods inscribed side-by-side in a single piece of a double-cladding fibre. One of the LPGs is sensitive to both SRI and temperature changes whilst the second is SRI-insensitive but shows spectral shift with temperature changes. In addition, we show that a resonance peak of the SRI-insensitive LPG can be designed to appear in the EDFA wavelength region with potential use for gain flattening applications.
|Title of host publication||Proceedings of IEEE Sensors, 2002|
|Number of pages||4|
|Publication status||Published - 12 Jun 2002|
|Event||1st IEEE international conference on Sensors - Orlando, FL, United States|
Duration: 12 Jun 2002 → 14 Jun 2002
|Conference||1st IEEE international conference on Sensors|
|Abbreviated title||IEEE Sensors 2002|
|Period||12/06/02 → 14/06/02|
Bibliographical note1st IEEE International Conference on Sensors, Kissimmee, FL (US).
- simultaneous temperature
- surrounding refractive index(SRI)
- long period gratings(LPGs)
- double-cladding fibre
- EDFA wavelength