Photonics Research Group Home
Ghent University Journals/Proceedings
About People Research Publications Education Services


Publication detail

Authors: T. Pinheiro-Ortega, E. Silvestre, P. Andres, B. Maes, P. Bienstman
Title: Design of bimodal PCFs for interferometric gas sensors with high sensitivity
Format: International Journal
Publication date: 7/2010
Journal/Conference/Book: IEEE Sensors Journal
Editor/Publisher: IEEE, 
Volume(Issue): 10(7) p.1180-1184
DOI: 10.1109/jsen.2010.2046032
Citations: 4 ( - last update: 7/7/2024)
3 (OpenCitations - last update: 3/5/2024)
Look up on Google Scholar
Download: Download this Publication (389KB) (389KB)


We theoretically investigate bimodal photonic crystal
fibers (PCFs) for the development of interferometric gas sensors (with one mode acting as the reference arm and another as the sensing arm), working either in the intensity measurement mode or in the spectral regime. For each operation mode we define a merit function that characterizes the sensitivity of the fiber taking into account both the interferometric and the evanescent-field nature of these sensing devices. The evaluation of the above merit functions, which involve the calculation of the propagation constant, the
group index, and the field profile of the first two guided modes, allows us to identify highly sensitive microstructured fibers for each sensing mode. In this paper, we propose a single birefringent PCF design that exhibits in both regimes extreme sensitivity in a certain wavelength operation range that can be shifted by changing the air-filling fraction.

Related Projects

Back to publication list