Miniaturized photonic sensors based on micro-interferometers

It is well known that interferometers make great sensors. This is because phase is a magnitude that can be measured with very accurate precision and with a great dynamic range at the same time. Integrating these devices on a chip is very appealing because it can make the device much smaller, lighter, and affordable. However, this technology also poses some challenges, which can degrade performance with respect to free-space or fiber-based devices. In this work we overview these challenges and possible strategies to tackle them.