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Proceedings Paper

Characterization technique for long optical fiber cavities based on beating spectrum of multi-longitudinal mode fiber laser and beating spectrum in the RF domain
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Paper Abstract

The characterization of long fiber cavities is essential for many systems to predict the system practical performance. The conventional techniques for optical cavity characterization are not suitable for long fiber cavities due to the cavities’ small free spectral ranges and due to the length variations caused by the environmental effects. In this work, we present a novel technique to characterize long fiber cavities using multi-longitudinal mode fiber laser source and RF spectrum analyzer. The fiber laser source is formed in a ring configuration, where the fiber laser cavity length is chosen to be 15 km to ensure that the free spectral range is much smaller than the free spectral range of the characterized passive fiber cavities. The method has been applied experimentally to characterize ring cavities with lengths of 6.2 m and 2.4 km. The results are compared to theoretical predictions with very good agreement.

Paper Details

Date Published: 11 March 2016
PDF: 7 pages
Proc. SPIE 9728, Fiber Lasers XIII: Technology, Systems, and Applications, 97281K (11 March 2016); doi: 10.1117/12.2211328
Show Author Affiliations
George A. Adib, Ain-Shams Univ. (Egypt)
Yasser M. Sabry, Ain-Shams Univ. (Egypt)
Diaa Khalil, Ain-Shams Univ. (Egypt)

Published in SPIE Proceedings Vol. 9728:
Fiber Lasers XIII: Technology, Systems, and Applications
John Ballato, Editor(s)

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