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Dispersion measurement via a microwave photonic notch filter based on stimulated Brillouin scattering
Author(s): Cheng Feng; Stefan Preussler; Thomas Schneider
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Paper Abstract

In this paper, a novel method of precise dispersion measurement is proposed by exploiting the high sensitivity of the notch frequency shift and stopband rejection in microwave photonic notch filters (MPNF) based on stimulated Brillouin scattering (SBS) in optical fibers. The MPNF principle is based on an amplitude unbalance and π phaseshift between two probe wave sidebands. In case of an SBS interaction on one of the sidebands, the unbalance is eliminated. Thus, the notch filter will be formed at a specific notch frequency by the signal cancellation at the receiver. A slight dispersion mismatch leads to a notch frequency shift and a significant reduction of the notch suppression. Due to the linear dependence of the notch frequency shift on the dispersion in the vicinity of proper compensation value, even two measurements are sufficient for a precise dispersion determination.

Paper Details

Date Published: 1 March 2019
PDF: 7 pages
Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 109171Z (1 March 2019); doi: 10.1117/12.2506377
Show Author Affiliations
Cheng Feng, Technische Univ. Braunschweig (Germany)
Stefan Preussler, Technische Univ. Braunschweig (Germany)
Thomas Schneider, Technische Univ. Braunschweig (Germany)


Published in SPIE Proceedings Vol. 10917:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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