A pneumatic photonic structure and precise optical indication of pressure over time inside the fluid flow

Abstract

The artificial periodic structures like layered photonic crystals may serve as a means of measurement for the processes periodic in time peculiar to living organisms. There are a lot of periodic phenomena concerned with the blood and lymph system functioning in a living body. One of them is so called Mayer waves of pressure in arteries caused by oscillations in human receptor control systems.1–3 The time dependinged processes of such kind and many other reasons like nature of the hypertension manifestations put forward precise pressure indicators as important optical instruments in the Biometry.4,5 The fine structure of pressure and local temperature time dependencies would make clear the nature of processes in human body. Though the outstanding optical features of photonic crystals have been first mentioned in Rayleigh study,6 a tide of the modern applications in a wide area was began from works of Eli Yablonovitch & Sajeev John.7,8 Various properties of photonic structures useful to create perfect dielectric mirrors, high-performance optical filters, key elements of logic gates, controlled mirrors or flexible waveguides and for many other applications were discussed since then.9–13 In this study, we focus on the use of opto-mechanical properties of the pneumatic photonic medium as a means to indicate pressure during a time depended process inside the flood flow.