Intermodal dispersion measurements and interpretation in graded-index optical fibres
| Autor: | L. Jeunhomme, P. Lamouler |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Optical fiber
Materials science business.industry Dynamic range Attenuation Resolution (electron density) Physics::Optics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Optics Modal Quality (physics) law Dispersion (optics) Modal dispersion Electrical and Electronic Engineering business |
| Zdroj: | Optical and Quantum Electronics. 12:57-64 |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/bf00625499 |
| Popis: | We describe in this paper a frequency-domain measurement configuration allowing the determination of intermodal dispersion, differential mode attenuation and mode-coupling effects in graded-index optical fibres. Attention is mainly given to intermodal dispersion which is obtained with a resolution of 5 ps km−1 and a dynamic range of 15dB. Spatial (or modal) resolution is examined from both the theoretical and experimental point of view and the high degree of resolution of the experiment is illustrated. Interpretation of the results for deducing the index profile errors and correcting the preform manufacturing process shows the usefulness of the method for improving fibre quality. |
| Databáze: | OpenAIRE |
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