Fiber Optic Mechanical Sensor Based on a Triangular-lattice Photonic Crystal

Abstract

This paper will start by mentioning very briefly previous results reported recently for mechanical sensors based on embedding a rectangular-lattice photonic crystal into the core of a standard monomode optical fiber. The next step will be to introduce and evaluate another mechanical sensor based on embedding a triangular-lattice photonic crystal into the core of the optical fiber. We will argue that such sensors (i.e., which embed photonic crystals into the core of optical fibers), are highly sensitive to mechanical deformations. Finally, we will estimate the sensitivity of the mechanical sensor which relies on a triangular-lattice photonic crystal, and compare it with that of a mechanical sensor which uses a rectangular-lattice photonic crystal. The main conclusion is that the triangular-based sensor is 22% more sensitive (than the rectangular-based one), while future directions of research will end the paper.

Photonic Crystals

“…Such chips offer the potential to combine photonic processing with electronic processing on a single chip. Therefore, 2D PhCs attract widespread interest and are the most frequently used structures (Jamois et al 2002 ;Beiu and Beiu 2008 ;García-Rupérez et al 2010 ) .…”