Special Issue "Fiber Bragg Grating Based Sensors and Systems"
Deadline for manuscript submissions: closed (30 September 2020).
Interests: microwave photonics; fiber optic sensors; fiber bragg gratings; application of electro-optical modulators; lidars; transfer of optical technologies in microwave range; microwave resonant sensors; microwave high- and low-intensity technologies; double-frequency methods in sensors and telecommunications
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Today, no one doubts that fiber Bragg gratings (FBGs) have become the most used tool for measuring various physical parameters, the structural integrity of engineering systems, and biological activity of living systems. Classical approaches to measurements based on temperature and mechanical deformations and changes in the refractive index of the surrounding sensor environment are actively developing. New measurement principles are emerging based, for example, on physical changes in the length of the grating. The search for ways to simplify and reduce the price of FBG interrogation systems on the one hand, and improve their metrological characteristics on the other, is ongoing. One of the winning directions of these studies is the transition to microwave photonics measurement systems, which have been developed on the basis of schemes of optoelectronic generators, frequency mapping, probing using multifrequency laser radiation with difference frequencies lying in the microwave range, and comb generators. The second promising direction is the development and creation of addressable FBGs, the use of which makes it possible to increase the efficiency of processing measurement data and provides the ability to visualize quasidistributed sensors and map their readings.
Bearing this in mind, this issue is dedicated, but not limited, to the following issues:
- Modeling and simulation of FBGs;
- Fabrication of FBGs;
- Multiparameter FBG sensors;
- Addressable FBGs;
- Nonsymmetrical FBGs;
- Special type of FBG sensors with one or multiplicative phase shifts;
- Sensors on chirped, tilted, superstructured, etc. FBGs;
- Нigh-speed optoelectronic interrogation methods;
- Microwave photonics interrogation methods;
- FBG sensors in dynamic measurements;
- FBG sensors in quasistatic measurements;
- FBGs in optical fibers of different classes;
- FBG sensors in DTS, DTSS, and DAS systems;
- FBG sensor on-board applications;
- FBG sensors in medicine and living systems monitoring;
- Biological FBG sensors;
- Integration and packaging of FBGs in technical and living systems;
- Application of FPI sensors, based on FBGs;
- Dual nature of FBGs as elements of sensor and telecommunication systems;
- Transfer of FBG characterization methods on different optical resonance structures;
- Transfer of FBG principles in microwave range.
We hope that the works published in this Special Issue will confirm the fundamental importance of the FBG invention and their comprehensive application in all areas of human activity, as well as open up new prospects for the creation and application of FBGs as quanta of various cyberphysical systems.Prof. Dr. Oleg G. Morozov
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