Title :
Nanoimprinted Polymer Micro/Nanofiber Bragg Gratings for High-Sensitivity Strain Sensing
Author :
Gu, Fuxing ; Yu, Huakang ; Fang, Wei ; Tong, Limin
Author_Institution :
Dept. of Opt. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
By using a simple and low-cost nanoimprinting technique, polymer micro/nanofiber Bragg gratings (MNFBGs) are fabricated with a ~551-nm grating period and a grating depth >;10 dB around 1.5-μm wavelength. As-fabricated MNFBGs also show high compactness to optical fiber systems and large dynamic range. Using a 2.5-μm-wide and 1.4-μm-thick MNFBG, we demonstrate strain sensing with a high sensitivity of -2.5 pm/με.
Keywords :
Bragg gratings; fibre optic sensors; micro-optics; microsensors; nanofabrication; nanofibres; nanophotonics; nanosensors; optical fibre fabrication; optical polymers; strain sensors; MNFBG; grating depth; grating period; high-sensitivity strain sensing; nanoimprinted polymer microfiber Bragg gratings; nanoimprinted polymer nanofiber Bragg gratings; nanoimprinting technique; optical fiber systems; size 1.4 mum; size 2.5 mum; Fiber gratings; Gratings; Optical fiber sensors; Optical fibers; Polymers; Fiber Bragg gratings; nanoimprinting; polymer waveguides; strain sensing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2227467
