Integrated Bragg grating sensors: achieving chemical sensing in liquid and gas flow systems

Abstract

The sensing of chemical species is required within a diverse set of fields including industry, environmental monitoring and homeland security. The sensing of chemicals in liquid and gaseous environments has been traditionally achieved by electronic and electrochemical sensors. However, optical sensors demonstrate many benefits over these electronic systems, including remote interrogation of large sensor arrays via optical fibre and telecoms equipment, immunity from EM interference and absence of spark risk in flammable environments