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Implementation of a Reference Interferometer for Nanodetection

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Synchronous phase detection for optical fiber interferometric sensors.

I J Bush¹, R L Phillips

¹University of Central Florida, Department of Electrical Engineering & Communication Sciences, Orlando, Florida 32816, USA.

|August 1, 1983

Summary

A new system accurately detects phase signals in optical interferometric sensors using optical heterodyning. This phase detection system functions similarly to a phase-locked loop and is mathematically modeled for predictable responses.

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Area of Science:

Optoelectronics
Sensor Technology
Signal Processing

Background:

Optical interferometric sensors are crucial for precise measurements.
Accurate detection of phase signals is essential for sensor performance.
Existing methods may face limitations in phase signal detection.

Purpose of the Study:

To develop a novel system for accurate phase signal detection in optical interferometric sensors.
To investigate the system's performance characteristics and underlying principles.

Main Methods:

Implementation of optical heterodyning for signal processing.
Synchronous detection of optical phase using a feedback control loop.
Mathematical analysis and development of a second-order system model.

Main Results:

The developed system accurately detects phase signals.
The system exhibits behavior analogous to a phase-locked loop.
The second-order model effectively predicts the system's response.

Conclusions:

The novel system offers a robust method for phase signal detection in optical interferometers.
The system's phase-locked loop-like properties enable stable and predictable operation.
Mathematical modeling provides a valuable tool for understanding and optimizing the system.