Long Period Gratings in Random Hole Optical Fibers for Refractive Index Sensing

TR Number
Date
2011-02-01
Journal Title
Journal ISSN
Volume Title
Publisher
Mdpi Ag
Abstract

We have demonstrated the fabrication of long period gratings in random hole optical fibers. The long period gratings are fabricated by a point-by-point technique using a CO2 laser. The gratings with a periodicity of 450 µm are fabricated and a maximum coupling efficiency of −9.81 dB has been achieved. Sensing of different refractive indices in the surrounding mediums is demonstrated by applying standard liquids with refractive indices from 1.400 to 1.440 to the long period grating.

Description
Keywords
Technology, Chemistry, Analytical, Electrochemistry, Instruments & Instrumentation, Chemistry, long period grating, random hole optical fiber, point-by-point, refractive index sensing, SENSOR, FABRICATION
Citation
Wang, K.; Pickrell, G. Long Period Gratings in Random Hole Optical Fibers for Refractive Index Sensing. Sensors 2011, 11, 1558-1564.