Single-fiber grid for improved spatial resolution in distributed fiber optic sensor

Opt Lett. 2010 May 15;35(10):1677-9. doi: 10.1364/OL.35.001677.

Abstract

The spatial resolution of an optical-fiber-based Raman distributed temperature sensor is limited by the pulse width of the laser used. We discuss a methodology of increasing spatial resolution by using a single-fiber grid. Spatial resolution improvement of up to 10 times is demonstrated.