We propose and demonstrate a visual, all-optical pressure-measuring device composed of a flexible membrane dilating toward a photonic crystal slab. Due to its transparency and capability to be miniaturized, it may be integrated on the inner side of an artificial lens and directly measure the eye’s intraocular pressure. Using crossed polarization filters for the readout process, we obtain a contrast enhancement for the circular contact area of the membrane with the photonic crystal slab. We demonstrate that the visible circle increases as a function of pressure.
© 2012 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: February 21, 2012
Revised Manuscript: June 19, 2012
Manuscript Accepted: June 20, 2012
Published: July 19, 2012
Yousef Nazirizadeh, Torben Karrock, and Martina Gerken, "Visual device for pressure measurement using photonic crystal slabs," Opt. Lett. 37, 3081-3083 (2012)