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Optical Sensor Manufacturing Solutions for High Temperature Applications

Reference number
Coordinator RISE Research Institutes of Sweden AB - Rise Acreo, Kista
Funding from Vinnova SEK 262 917
Project duration July 2016 - June 2018
Status Completed

Purpose and goal

The purpose of this project was that NorthLab Photonics AB should develop an automatic production unit for fiberoptical sensors for the enduser Emarksan AS. Acreo’s part has been to contribute with knowledge about fiberoptical sensors called fiber-Bragg gratings (FBG:s) and to gain a deeper understanding about the high-temperature type called CCG:s regarding functionality and lifetime. Acreo has according to plan manufactured CCG:s in different fiber types and made accelerated lifetime tests. Deeper knowledge has been achieved about the sensor’s functionality and lifetime.

Expected results and effects

A literature survey has been made about FBGs for high temperatures. Sensor parameters were collected together with process data. CCG:s have been manufactured in three different fiber types. Accelerated lifetime test (@750°C >1000 hours) has given a deeper understanding about the function and lifetime of the CCG:s. A sensor specification has been put together for market and sell activities.

Planned approach and implementation

Initially Acreo made a literature survey about high-temperature FBG:s. Sensor parameters were collected together with process data. Then Acreo manufactured CCG:s in three different types of fiber. The CCG:s were then encapsulated and tested in an accelerated lifetime test in an oven at 750°C during 1000 hours. From the results lifetime and temperature accuracy could be estimated. Finally, a sensor specification was written for the CCG:s.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 8 January 2019

Reference number 2016-03512

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