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Stress in optical waveguides. 3: Stress induced index change
Applied Optics
|June 18, 2010
Summary
Drawing induced stress has minimal impact on dispersion-flattened single-mode (DFSM) fiber light-guiding properties. However, stress significantly affects pure silica core fiber optical characteristics due to the elastooptical effect.
Area of Science:
- Materials Science
- Optical Engineering
- Fiber Optics
Background:
- Dispersion-flattened single-mode (DFSM) fibers are crucial for optical communication.
- Understanding the impact of manufacturing processes on fiber properties is essential for performance optimization.
Purpose of the Study:
- To investigate the influence of drawing-induced stress on the light-guiding properties of DFSM fibers.
- To compare the stress effects in DFSM fibers versus pure silica core fibers.
Main Methods:
- Experimental measurement of refractive index profiles for fibers drawn under varying forces.
- Analysis of stress-induced refractive index changes using the elastooptical effect.
- Theoretical calculations for pure silica core fibers.
Main Results:
- Differences in refractive index profiles were observed and attributed to the elastooptical effect.
- Drawing force had a negligible effect on DFSM fiber spot size and cutoff wavelength.
- Calculations indicated a strong dependence of optical properties on drawing force for pure silica core fibers.
Conclusions:
- DFSM fibers exhibit robustness against drawing-induced stress concerning their light-guiding properties.
- Pure silica core fibers are more susceptible to manufacturing stress, impacting their optical performance.
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