PROJECT TITLE :

Rough Side-Polished Fiber With Surface Scratches for Sensing Applications

ABSTRACT:

We demonstrated a quick mechanical wheel lapping technique to fabricate a convenient and low-cost side-polished fiber (SPF) with a rough, instead of smooth, polished surface. Such a bare SPF can be directly used to develop a promising sensing device, because a Mach-Zehnder interference pattern with high fringe contrast higher than 10 dB in transmission spectrum was achieved thanks to the macro scratches on the rough polished surface. Fabrication parameters, e.g., thickness of remaining fiber, polished length, and roughness of abrasive paper, were optimized. The sensor exhibited strain and temperature sensitivities up to -2.0zero pm/με and 29.thirty seven pm/°C and will be used to appreciate simultaneous strain and temperature measurement.