| Autor: |
Becker, Thomas, Loquai, Sven, Ziemann, Olaf, Poisel, Hans, Luber, Michael, Schmauss, Bernhard |
| Předmět: |
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| Zdroj: |
International Conference on POF Proceedings; 2015, p265-272, 8p |
| Abstrakt: |
We investigate effects that occur in large core (1 mm) step index (SI) polymer optical fibers (POF) when exposed to temperature changes. The volume of Polymethylmethacrylate (PMMA) and hence the length of a SI-POF is known to increase with rising temperatures due to thermal expansion. On the other hand its refractive index is also temperature-dependent and decreases when the fiber is heated. A ray of light travelling along the fiber is therefore facing two contrary effects: The geometrical length of its path through the fiber increases while it is propagating at a higher speed. As a consequence also the modal dispersion of the fiber depends on the temperature. The effects are evaluated in an experimental setup and are in good agreement with a corresponding ray tracing simulation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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