Cross talk in a fiber-optic Fabry-Perot sensor array with ring reflectors.

Area of Science:

• Optoelectronics
• Fiber Optics
• Sensor Technology

Background:

• Fiber-optic sensors offer advantages in harsh environments.
• Fabry-Perot interferometers are sensitive optical devices.
• Integrating multiple sensors requires managing optical reflections.

Purpose of the Study:

• To demonstrate a novel fiber-optic interferometric sensor array.
• To utilize in-line Fabry-Perot configurations with fiber ring reflectors.
• To analyze and quantify optical cross talk between sensor sections.

Main Methods:

• Developed a sensor array using in-line Fabry-Perot cavities.
• Employed fiber ring reflectors for low-reflectivity elements.
• Experimentally tested a four-sensor system to measure cross talk.

Main Results:

• Successfully implemented a fiber-optic sensor array.
• Quantified intrinsic optical cross talk due to multiple reflections.
• Experimental results validated the theoretical analysis of cross talk.

Conclusions:

• The proposed fiber-optic sensor array design is feasible.
• Fiber ring reflectors effectively create low-reflectivity elements.
• The system exhibits manageable optical cross talk for practical applications.