Optomechanical impact sensor with photonic crystal structures

Orsel, Ogulcan E. and Erdil, Mertcan and Yanık, Cenk and Kocaman, Serdar (2019) Optomechanical impact sensor with photonic crystal structures. In: Active Photonic Platforms XI Conference 2019, San Diego, CA, USA

Full text not available from this repository. (Request a copy)


We present an optomechanical impact sensor, designed by the utilization of a 2D rod-type photonic crystal (PhC) cavity. The PhC cavity is sandwiched by perfect electrical conductor (PEC) boundaries with an air slot between the top of the PhC rods and the bottom of the top PEC layer. Strong light localization in the air slot region makes the PhC cavity characteristics highly sensitive to the air slot width, leading to optomechanical applications such as impact sensing. A suspended mechanical gold membrane, as a replacement of PEC layers for practical realizations, is designed to sense impact acceleration. In the presence of an impact, the mechanical structure deflects resulting in a change in the air slot height, which in turn, tunes the resonant wavelength of the PhC cavity. Calculations show that 16.6 μs response time, much faster than the commercially available ones (around 200 ms), is possible.
Item Type: Papers in Conference Proceedings
Uncontrolled Keywords: Metallic perturbation; Opto-mechanical interaction; Photonic crystal
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Cenk Yanık
Date Deposited: 29 Jul 2023 10:12
Last Modified: 29 Jul 2023 10:12
URI: https://research.sabanciuniv.edu/id/eprint/46398

Actions (login required)

View Item
View Item