Functionnalization of optical fibers with garnets for magneto-optical applications – FOGAMO

The purpose of this project is to explore the potential a new preparation process of magneto-optical materials for applications in guided optics. The project is based on unique knowhow to IPCMS: to the development of materials held by the Département de Chimie des Matériaux Inorganiques, functionalization of integrated optical waveguides and ultrafast magneto-optic processes in Département d’Optique ultrarapide et de Nanophotonique.
The material preparation process is based on new organic/inorganic precursors that greatly ease the functionalization of the end of an optical fiber by a magneto-optic microparticle made of one of the most efficient material known up to these days. The process is fast, it has a very limited number of steps, requiring minimal implementation of equipment and non-toxic products. So, we can develop a family of sensors or magneto-optical devices with high added value compared to existing devices.
In this project, two types of devices are considered. The first one involves a single microparticle at a fiber end. This simple configuration will allow both the optimization of materials and the development of a magneto-optical sensor operating in reflection. The second consists of a microparticle for connection between two optical fibers. In this case, the related devices are those involved in the control of modes propagated in an optical fiber and their various applications (modulator, TE TM converters ...). This insertion enables ability to functionalize a fiber in different places also opens up the possibility of establishing different magneto-optical sensors at different positions on the same line. Finally, we will go to the realization of a magnetic field detector based on our functionalized fibers to demonstrate the validity of our concept.
The strong development potential has motivated the start of a patent filing process. Particularly sensitive to the technology transfer, we will actively take this action as part of this project. The market for fibered detectors now presents an annual growth of 10% in a market valued at $ 2 billion. We are convinced that the benefits of our process will allow us to find a place in this market in the right times.