Cost Effective FBG Temperature Sensor System

Description

A cost-effective FBG (Fiber Bragg Grating) interrogation system that includes a tunable light source, arrayed photodiodes, and several fiber-optic couplers has developed with very simple configuration. Especially, it is not necessary o compensate the accurate wavelength because the wavelength sweeping is precisely performed in terms of the response time of which external cavity material is 5 msec. Moreover, time-varying temperature trends as well as spectra of FBGs can be observed through the front display.

Features

- Simplifies the wavelength variable function by using the electric driving characteristics of VCSEL

- Small Operation possible with around 10 sensors

- Suitable for IoT optical sensor network configuration

- Duel Sensor: Can measure temperature & strain

Application

- Sensor system using optical fiber such as chemistry and temperature sensor

- Safety diagnosis and displacement measurement of structure, terrain, ships, powerplants, etc.

- IoT sensor monitoring

- Safety system in shipbuilding and power field