OP1 - Application of Fiber Bragg Grating Sensor for Localized Cryogenic Temperature Measurements
- Event
- SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg - Band
- Proceedings OPTO 2009 & IRS² 2009
- Chapter
- OPTO Poster Session
- Author(s)
- R. Rajini-Kumar, M. Suesser, H. Neumann - Forschungszentrum Karlsruhe GmbH, Karlsruhe, Germany
- Pages
- 113 - 118
- DOI
- 10.5162/opto09/op1
- ISBN
- 978-3-9810993-6-2
- Price
- free
Abstract
Optical method for the evaluation of temperature distribution of multilayer insulation is presented. Five fiber arrays with 4 Fiber Bragg Grating (FBG) sensors in each array are fabricated in a wavelength division-multiplexing (WDM) scheme. MLI temperature varies the gratings periods of the FBG sensors which changes the back reflected Bragg wavelength. This can be correlated with temperature change. For demonstration, a test chamber (219mm Ø X 1900 H) insulated with aluminized Mylar (6*4 = 24) layer is used. The axial and transverse temperature distribution of MLI is recorded for various vacuum levels. The results obtained were well agreed with the already reported theoretical calculations.