Detecting dew point temperatures with sensors that work in conjunction with light refraction and water molecule condensation can be done through the use of photonic structures.
Machines, including, health monitors, nuclear reactors, oil drills and wind turbines require internal sensors to monitor the
physical states such as the temperature and humidity. Researchers have been working to develop a compact silicon photonic sensor to provide accurate readings for use in technology that could be damaged by corrosive, or toxic materials or even to operate in explosive conditions.
In the devices small optical temperature sensors split the light into two beams. The beams are able to travel through different materials before they converge again. The resulting interference pattern the beams encounter provides information about the surrounding temperatures and the light being measured.
A highlight of the photonic sensor is that it doesn’t require the use of mirrors. The beams are guided through loops that bring it back to the “interference” point. The sensor measures a wide array of temperatures and was also found to be 20 times more sensitive to small temperature fluctuations than the existing fiber optic sensors currently used.
The temperature and humidity levels in devices such as nuclear reactors are crucial to public health and safety. These sensors monitor the levels and sound an alert when temperature and moisture reaches pre-programmed levels of concern.
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