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Temperature-induced optical phase shifts in fibers
Applied Optics
|March 25, 2010
Summary
This study analyzes the thermal sensitivity of optical fibers, detailing how temperature changes affect the optical phase. Analytical and experimental results for bare and jacketed fibers align, validating the phase shift calculations.
Area of Science:
- Optics and Photonics
- Materials Science
- Fiber Optics
Background:
- Optical fibers are susceptible to environmental factors, including temperature.
- Understanding thermal effects is crucial for reliable fiber optic sensor applications.
- Both bare and jacketed fiber configurations require distinct thermal analysis.
Purpose of the Study:
- To investigate the static thermal sensitivity of the optical phase in optical fibers.
- To develop an analytical model for predicting thermally induced phase shifts.
- To experimentally validate the analytical model using a Mach-Zehnder interferometer.
Main Methods:
- Analytical modeling of thermally induced stresses and strains in optical fibers.
- Calculation of optical phase shift based on fiber composition and geometry.
- Experimental measurements using a Mach-Zehnder fiber interferometer.
Main Results:
- The analytical model accurately predicts the static thermal sensitivity of the optical phase.
- Experimental results confirm the calculated phase shifts for both bare and jacketed fibers.
- The study quantifies the relationship between temperature, stress, strain, and optical phase shift.
Conclusions:
- The developed analytical approach provides a reliable method for assessing fiber optic thermal sensitivity.
- Accurate characterization of thermal effects is essential for designing robust fiber optic systems.
- The findings support the use of fiber optic interferometry for precise thermal sensing.
