A spectrally and spatially multiplexed LPG sensor system using an InGaAs CCD linear array

P. E. Balzhiev; W. J Bock; T. A Eftimov; P. Mikulic; R. Arnaudov

doi:10.1117/12.886615

18 May 2011 A spectrally and spatially multiplexed LPG sensor system using an InGaAs CCD linear array

P. E. Balzhiev, W. J Bock, T. A Eftimov, P. Mikulic, R. Arnaudov

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77539L (2011) https://doi.org/10.1117/12.886615
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

In this paper we report our progress on the development of a spatially and spectrally multiplexed LPG-based fiber-optic sensor that uses an InGaAs CCD linear array and a diffraction grating for the detection of spectral changes. Three 1x2 fiber-optical switches are used to realize a system of spatial multiplexing of four sensing channels. Up to three LPGs can be connected in series in each channel. The end grating of each channel has a fiber reflector spliced to it and the reflected signals are directed to the detection unit via a circulator. To test the system bending and external refractive index changes have been traced.

Citation Download Citation

P. E. Balzhiev, W. J Bock, T. A Eftimov, P. Mikulic, and R. Arnaudov "A spectrally and spatially multiplexed LPG sensor system using an InGaAs CCD linear array", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539L (18 May 2011); https://doi.org/10.1117/12.886615

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