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Addressed fiber Bragg structures in quasi-distributed microwave-photonic sensor systems

O.G. Morozov1, A.J. Sakhabutdinov1

Kazan National Research Technical University named after A.N. Tupolev – KAI,
420111, K. Marx str., 10, Russia, Kazan

 PDF, 1404 kB

DOI: 10.18287/2412-6179-2019-43-4-535-543

Pages: 535-543.

Full text of article: Russian language.

Abstract:
The article describes the theory and technique of addressed fiber Bragg structures and a new class of microwave-photonic sensory systems based thereon, the distinctive feature of which is that the fiber Bragg structure forms two ultra-narrowband frequency components separated by a unique address frequency spacing. The offset of the central frequencies of the Bragg structures is determined via processing a beat signal of the address frequencies on the photodetector, with its parameters making it possible to evaluate the physical fields applied. We formulate and solve a problem of unambiguously determining the central (Bragg) frequency shift of the addressed fiber Bragg structures with unique address frequencies and the same Bragg frequency. These are then combined into a single multi-sensor system with multiplexed response reception on a single photodetector.

Keywords:
microwave-photonic sensor systems, fiber Bragg gratings, addressed fiber Bragg structures

Citation:
Morozov OG, Sakhabutdinov AJ. Addressed fiber Bragg structures in quasi-distributed microwave-photonic sensor systems. Computer Optics 2019; 43(4): 535-543. DOI: 10.18287/2412-6179-2019-43-4-535-543.

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