Multi-Addressed Fiber Bragg Structures for Microwave-Photonic Sensor Systems
| Autor: | Oleg G. Morozov, T. A. Agliullin, A. Kuznetsov, Vladimir I. Anfinogentov, Airat Zh. Sakhabutdinov, Rinat Sh. Misbakhov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
microwave-photonic sensor systems
Electromagnetic spectrum Infrared Photodetector Physics::Optics 02 engineering and technology lcsh:Chemical technology 01 natural sciences Biochemistry Signal Article Analytical Chemistry Optics Fiber Bragg grating Multi-Addressed Fiber Bragg Structures 0202 electrical engineering electronic engineering information engineering lcsh:TP1-1185 Fiber Electrical and Electronic Engineering Center frequency Instrumentation Fiber Bragg Gratings Physics Addressed Fiber Bragg Structures business.industry 010401 analytical chemistry 020206 networking & telecommunications Filter (signal processing) Atomic and Molecular Physics and Optics 0104 chemical sciences business |
| Zdroj: | Sensors Volume 20 Issue 9 Sensors, Vol 20, Iss 2693, p 2693 (2020) Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s20092693 |
| Popis: | The new theory and technique of Multi-Addressed Fiber Bragg Structure (MAFBS) usage in Microwave Photonics Sensor Systems (MPSS) is presented. This theory is the logical evolution of the theory of Addressed Fiber Bragg Structure (AFBS) usage as sensors in MPSS. The mathematical model of additive response from a single MAFBS is presented. The MAFBS is a special type of Fiber Bragg Gratings (FBG), the reflection spectrum of which has three (or more) narrow notches. The frequencies of narrow notches are located in the infrared range of electromagnetic spectrum, while differences between them are located in the microwave frequency range. All cross-differences between optical frequencies of single MAFBS are called the address frequencies set. When the additive optical response from a single MAFBS, passed through an optic filter with an oblique amplitude&ndash frequency characteristic, is received on a photodetector, the complex electrical signal, which consists of all cross-frequency beatings of all optical frequencies, which are included in this optical signal, is taken at its output. This complex electrical signal at the photodetector&rsquo s output contains enough information to determine the central frequency shift of the MAFBS. The method of address frequencies analysis with the microwave-photonic measuring conversion method, which allows us to define the central frequency shift of a single MAFBS, is discussed in the work. |
| Databáze: | OpenAIRE |
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