Abstract

A large variety of photonic biosensors has already been demonstrated and their many advantages are well established. Photonic biosensors can detect analyte concentrations down to pg/ml concentrations and lower [1][2], but a few issues remain before they can become truly ubiquitous. Many realisations need complex readout equipment such as external spectrometers or they rely on precise light coupling arrangements which leads to bulky setups. The ideal sensor and containing device is simple, sensitive and easy to use, which are supposedly contradictory requirements. A small number of solutions to this issue have recently been introduced [3][4][5], but we believe that there is still room for improvement, both in terms of simplicity and sensitivity.

© 2019 IEEE