| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
De Almeida, Jmmm
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023Measuring Water Vapor Sorption Hysteresis of Cement Paste through an Optical Fiber Sensorcitations
- 2022Simple Optical Fiber Interferometer for Dynamic Measurement of Refractive Index and Thickness of Polymer Filmscitations
- 2020Preliminary assessment on the detection of putrescine using long period fiber gratings coated with titanium dioxide and poly(ethyleneco-vinyl acetate)citations
- 2018Plasmonic Optical Fiber Sensor Based on Double Step Growth of Gold Nano-Islandscitations
- 2017A chemometrics approach applied to Fourier transform infrared spectroscopy (FTIR) for monitoring the spoilage of fresh salmon (Salmo salar) stored under modified atmospheres
- 2016Characterization of zinc oxide coated optical fiber long period gratings with improved refractive index sensing propertiescitations
- 2016Zinc oxide coated optical fiber long period gratings for sensing of volatile organic compoundscitations
- 2015Discrimination and characterisation of extra virgin olive oils from three cultivars in different maturation stages using Fourier transform infrared spectroscopy in tandem with chemometricscitations
- 2015Sensing Structure Based on Surface Plasmon Resonance in Chemically Etched Single Mode Optical Fibrescitations
- 2014Evaluation of the Spoilage of Raw Chicken Breast Fillets Using Fourier Transform Infrared Spectroscopy in Tandem with Chemometricscitations
- 2014Enhanced refractive index sensing characteristics of optical fibre long period grating coated with titanium dioxide thin filmscitations
Places of action
| Organizations | Location | People |
|---|
article
Simple Optical Fiber Interferometer for Dynamic Measurement of Refractive Index and Thickness of Polymer Films
Abstract
Fiber optic-based refractometers is a thoroughly researched field, with many different configurations being used. However, most designs require external calibration using substances of known refractive index (RI) and their fabrication process might be impractical and time consuming, creating the need for a quick and accurate method of measuring RI of different substances. A simple method for simultaneous measurement in real-time of RI and thickness of polymer thin films is presented, allowing dynamic measurements in the presence of changing environmental parameters, such as temperature or humidity. This method, which does not require previous calibration, is based on an inline Fabry-Perot (FP) cavity, created by dipping the tip of a cleaved optical fiber (OF) in a polymer solution. The procedure consists of using the equations of the low finesse FP interferometers to directly extract information from the structure created, such as RI and cavity length, by working in the spectral window from 1500 to 1600nm. The method was validated by creating FP cavities with liquids of known RI, for which a typical precision of 3 x 10(-3) was achieved, along with errors lower than 0.6% and 1% for RI and cavity length determination, respectively, The procedure was then used to monitor three different curing processes, namely the temperature curing of Sylgard (TM) 184, the UV curing of Norland Optical Adhesives (TM) 65 and the mixing and curing of Ceys (TM) Araldite epoxy glue. Both RI and cavity length were compared to reference values, showing excellent agreement with the experimental results for a method that does not require external calibration.