Toward Engineered Nanoparticle-Doped Optical Fibers for Sensor Applications

Nanoparticle-doped optical fibers, investigated first as fiber lasers and amplifiers, have gained tremendous interest over the past few years sensors. One of main interests such fibers relies on ability to develop a distributed sensor, allowing real-time measurement with multiplexed architecture. To go beyond actual proof concept, we discuss in this perspective paper three challenges tackle: understanding light propagation heterogeneous materials, controlling nanoparticle formation glass, engineering characteristics. Identified directions follow, they will contribute promote nanoparticle-doped sensors next years.