18 April 2007 ICFO research highlighted by OPTICS.org

Detail of the microstructure optical fibre interferometer

(left to right) Prof. Pruneri, Dr. Joel Villatoro and Prof. Gonçal Badenes

Research by Dr. Joel Villatoro featured in the news OPTICS.org, an organization specialized in the dissemination of lasers and photonics news produced worldwide, highlights a new fiber interferometer developed by ICFO postdoctoral researcher, Joel Villatoro in collaboration with Dr. Minkovich of the Centro de Investigaciones en Óptica A. C. Based on fusion splicing of microstructured optical fibers (MOF), the simple interferometer is used to make a strain sensor only a few centimeters long.

Longitudinal strain on the MOF shifts the interference pattern to shorter wavelengths. Therefore, the interferometer has strong potential for strain-sensing applications. The fabrication is fast and simple, and interrogation with a simple LED and a palm-size spectrometer are sufficient. The device is robust, operates from approximately 650 to 1600nm, and can withstand temperatures of 1000 °C or even higher. This work was recently published in Opt. Express 15, 1491-1497 (2007).

Joel Villatoro is a postdoctoral research at the nanophotonic devices group, led by Prof. Gonçal Badenes. The work was done in collaboration with the group led by Prof. Valerio Pruneri.