Multipurpose Polymer Bragg Grating-Based Optomechanical Sensor Pad

• DOI: 10.3390/s19194101
• Publication Date: 2019-09-23T07:26:32Z
• Authors: Steffen Hessler; Patrick Bott; Stefan Kefer; Bernhard Schmauss; Ralf Hellmann
• Keywords: Fiber Bragg Grating

Flexible epoxy waveguide Bragg gratings are fabricated on a low-modulus TPX™ polymethylpentene polyolefin substrate for an easy to manufacture and low-cost optomechanical sensor pad providing exceedingly multipurpose application potentials. Rectangular EpoCore negative resist strip waveguides formed employing standard UV mask lithography. Highly persistent inscribed directly into the channel by permanently modifying local refractive indices through well-defined KrF excimer laser irradiated +1/-1 order phase mask. The reproducible vastly versatile sensing capabilities of this easy-to-apply demonstrated in form optical pickup acoustic instruments, broadband accelerometer, biomedical vital sign monitoring both respiration pulse at same time.