Single-Crystal Sapphire Optical Fiber Sensor Instrumentation

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Improved Sensor Packaging

Project Description

The Center for Photonics Technology at Virginia Tech has successfully developed a novel temperature sensor capable of operating at temperatures up to 1600 degrees Celsius (°C) and in harsh conditions. The sensor uses single-crystal sapphire to make an optically-based measurement and will fulfill the need for the real-time monitoring of high temperatures created in gasification processes. Based on a successful laboratory demonstration of a optical sapphire based sensor, Virginia Tech's CPT was awarded follow on development work to design construct and test a prototype sensor that could be installed in coal gasifiers. The improved version of the sensor is intended to be more robust, accurate and reliable for extended operation in a coal gasifier and will be evaluated at a full scale gasifier (e.g. Eastman Chemical).

Project Benefits

This project will develop a sapphire-based sensor that records temperature data up to 1,600°C. This temperature sensor can accurately measure gasification environments in extreme conditions. The expected impact of supporting efforts such as this to develop sensors that will monitor the performance of critical components operation in harsh conditions within gasification facilities, is lower operating costs.

Presentations, Papers, and Publications

• Single-Crystal Sapphire Optical Fiber Sensor Instrumentation (May 2014)
  Presented by Brian Scott, Virginia Polytechnic Institute and State University, 2014 NETL Crosscutting Technology Research Review Meeting, Pittsburgh, PA.

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