Remote Interrogation of WDM Fiber-Optic Intensity Sensors Deploying Delay Lines in the Virtual Domain

Sensors

David Sánchez Montero¹ 

关键词: optical sensing;    passive remote sensing;    self-referencing;    virtual delay line;   

DOI  :  10.3390/s130505870

来源: mdpi

【 摘 要 】

In this work a radio-frequency self-referencing WDM intensity-based fiber-optic sensor operating in reflective configuration and using virtual instrumentation is presented. The use of virtual delay lines at the reception stage, along with novel flexible self-referencing techniques, and using a single frequency, avoids all-optical or electrical-based delay lines approaches. This solution preserves the self-referencing and performance characteristics of the proposed WDM-based optical sensing topology, and leads to a more compact solution with higher flexibility for the multiple interrogation of remote sensing points in a sensor network. Results are presented for a displacement sensor demonstrating the concept feasibility.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.