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Proceedings Paper

Ladder topology network based on white light fiber-optic Mach-Zehnder interferometer
Author(s): Song Li; Libo Yuan; Ferhati Mokhtar
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Paper Abstract

A ladder topology network based on white light fiber-optic Mach-Zehnder interferometer is introduced by consideration of multiplexing capacity and coupler tailoring. We enhance the multiplexing capacity of the sensors network by using optimization method. The network consists of 7 branches sensing array linked by 3 couplers. We contrast two different cases, one we choose couplers with equal coupling ratio, and the other one with tailored coupling ratio. Practical setup is built up for demonstrating the theoretical analysis. The experimental results have a good agreement with the numerical simulation. The maximum number of the fiber-optic sensors is 8 with equal coupling ratio, and 10 with tailored coupling ratio. The return average signal intensities of each sensor are balanced when we use tailored couplers. Both theoretical and experimental results show that the multiplexing capacity of the sensing system has been improved.

Paper Details

Date Published: 23 November 2011
PDF: 7 pages
Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 819918 (23 November 2011); doi: 10.1117/12.906513
Show Author Affiliations
Song Li, Harbin Engineering Univ. (China)
Libo Yuan, Harbin Engineering Univ. (China)
Ferhati Mokhtar, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 8199:
2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications

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