Triangularly phase-modulated optical fiber ring resonator sensor

Area of Science:

• Optoelectronics
• Photonics
• Sensor Technology

Background:

• Optical fiber sensors offer advantages in remote and harsh environment sensing.
• Ring resonators provide high sensitivity due to their resonant properties.

Purpose of the Study:

• To demonstrate a new optical fiber ring resonator sensor system.
• To characterize the system's performance in detecting optical phase changes.

Main Methods:

• Applying a triangular phase modulation signal to a fiber loop.
• Utilizing optical fiber ring resonator principles for sensing.

Main Results:

• The sensor system exhibits a dynamic range of 2pi for optical phase change detection.
• Linearity was maintained across the entire dynamic range.
• A minimum detectable optical phase change of 1.5 x10(-4) rad/Hz((1/2)) was achieved.

Conclusions:

• The demonstrated optical fiber ring resonator sensor system is effective for precise optical phase change detection.
• The system's linearity and sensitivity indicate its potential for advanced sensing applications.