Ladder topology network based on white light fiber-optic Mach-Zehnder interferometer

Song Li; Libo Yuan; Ferhati Mokhtar

doi:10.1117/12.906513

22 November 2011 Ladder topology network based on white light fiber-optic Mach- Zehnder interferometer

Song Li, Libo Yuan, Ferhati Mokhtar

Author Affiliations +

Proceedings Volume 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 819918 (2011) https://doi.org/10.1117/12.906513
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

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.

Citation Download Citation

Song Li, Libo Yuan, and Ferhati Mokhtar "Ladder topology network based on white light fiber-optic Mach- Zehnder interferometer", Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 819918 (22 November 2011); https://doi.org/10.1117/12.906513

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