Overview of Addressed Fiber Bragg Structures’ Development

Agliullin, T. A.; Il'in, German I.; Kuznetsov, Artem A.; Мисбахов, Р. Ш.; Misbakhov, Rustam; Morozov, Gennady A.; Morozov, Oleg G.; Nureev, Ilnur I.; Sakhabutdinov, A. Zh.

doi:10.3390/photonics10020175

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…The second classification of the ontology of the MAFBS layer is synthesized according to the attribute of the new levelthe number of addresses: unicast, which is a double-component AFBS (D-AFBS); two-address, which is a symmetrical three-component MAFBS (ST-MAFBS) with side address components spaced one address frequency from the central address component; three-address, is an asymmetric three-component MAFBS (AT-MAFBS) with side address components spaced at different address frequencies from the central address component (fig. 2, adapted from 18 ). The use of AFBS and MAFBS of any type greatly simplifies the interrogation scheme compared to traditional optoelectronic methods, since it requires only a broadband light source, an optical filter with a given sloped linear frequency response, and a photodetector.…”

Section: Successor Afbs With Three Spectral Componentsmentioning

confidence: 99%

“…The Bragg wavelength can be defined as being in the middle between the wavelengths of the side components, coinciding with the wavelength of the central address component, or not coinciding. As an alternative, the length of the Bragg frequency can be determined in terms of the position of any of the address components, since the structure of the MAFBS, as already mentioned, is known (fig.3, adapted from18 ).…”

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confidence: 99%

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Addressed fiber Bragg structures ontology

Morozov,

Sakhabutdinov,

Agliullin

et al. 2023

Optical Technologies for Telecommunications 2022

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Seven years ago, we proposed the concept of addressed fiber Bragg structures (AFBS), which simultaneously perform the functions of: a complexed sensitive element based on two FBGs (2-AFBS) with different Bragg frequencies or FBG with two -phase shifts (2-AFBS), the difference frequency of which is the AFBS address and the value of it is invariant to measured physical fields; a two-frequency laser radiation source, which can operate as in reflection, so as transmission mode respectively to structure above, a self-multiplexed set of sensors, if the difference frequency will be unique for each AFBS, enabling their address multiplexing. In this article, we consider the ontology of AFBS, including the parent structures with 2-or 2-components, successor AFBS with three spectral components and various combinations of difference frequencies: symmetrical and asymmetric, performing the functions of the addressing and converting information signals to the low-frequency region at the same time, along with the functions of rejecting collisions caused by the relative movement of structures relative to each other during measurements. The subjects of interrogation of these structures and their calibration are discussed as well as prospects of AFBS further development based on common tasks born by ontology formalization and decisions of applicability tasks.

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Section: Successor Afbs With Three Spectral Componentsmentioning

confidence: 99%

mentioning

confidence: 99%

Addressed fiber Bragg structures ontology

Morozov,

Sakhabutdinov,

Agliullin

et al. 2023

Optical Technologies for Telecommunications 2022

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“…3) at 0.5 GHz. Peak separation was measured using a MPAI, which has a frequency resolution determined by the laser linewidth (100 kHz) 5,[18][19][20] . A 2π-AFBS and a fiber of the same diameter (used for force balancing) were loaded with two metal plates (Fig.…”

Section: Typical Design Of Temperature Compensated Transversal Load S...mentioning

confidence: 99%

Transversal load sensor on addressed fiber Bragg structure with two phase shifts

Morozov,

Sakhabutdinov,

Agliullin

et al. 2023

Optical Technologies for Telecommunications 2022

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Fiber Bragg gratings (FBGs) have attracted considerable attention and have been used to measure various physical parameters. The best known is the use of FBGs to measure structural strain in a direction parallel to the optical fiber. However, it is also possible to use an FBG to measure the load in the direction transverse to the optical fiber. The paper presents scientifically based principles for constructing and results of experimental demonstration of polarization fiber optic sensors for monitoring of transversal load of a new type built on two addressed fiber Bragg structures (AFBS) with a microwave photonics interrogation. AFBS with two phase shifts have two ultra-narrow transmission peaks in the reflection band, which determine its address, expressed in GHz. When a transverse load is applied to AFBS, the transmission peaks will be divided into two due to the difference in the change of the fiber core refraction indices. The distance between the wavelengths of the separated peaks with two polarizations will change when the transversal force changes. The measured dependence between the value of the transverse force and the frequency of the beat-generated microwave signal shows very good linearity. The new sensor has the possibility to increase the resolution and sensitivity of measurements, as well as temperature compensation through the use of various AFBS of wavelength type. The range of measured forces is up to 100 N, the absolute measurement error is 0.1 N, frequency separation sensitivity is 0.1 GHz/N.

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Ontology of Addressed Fiber Bragg Structures as a New Type of Sensor Elements

Morozov,

Zh Sakhabutdinov

2024

J. Phys.: Conf. Ser.

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Addressed Fiber Bragg Structures (AFBS) serve a dual purpose, acting as complex-sensitive elements with two distinct configurations: one involving two Fiber Bragg Gratings (2λ-AFBS) with different Bragg frequencies, and the other employing a single FBG with two π-phase shifts (2π-AFBS). The difference frequency between these configurations acts as the unique AFBS address, which remains constant regardless of the measured physical fields. Additionally, they function as a two-frequency laser radiation source capable of operating in both reflection and transmission modes, corresponding to the structure above. When the difference frequency is unique for each AFBS, it enables self-multiplexing of sensors. In this article, we present the ontology of AFBS, encompassing parent structures with 2λ- or 2π-components and their successor AFBS with three spectral components. These structures offer various combinations of difference frequencies, both symmetrical and asymmetric, allowing them to address and convert information signals to the low-frequency range while also mitigating collisions caused by the relative shifts of structures’ spectra during measurements. We also explore the subjects of interrogation for these structures and discuss their calibration, as well as the future prospects of AFBS development, including the usage of hybrid AFBS.

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Overview of Addressed Fiber Bragg Structures’ Development

Cited by 8 publications

References 47 publications

Addressed fiber Bragg structures ontology

Addressed fiber Bragg structures ontology

Transversal load sensor on addressed fiber Bragg structure with two phase shifts

Ontology of Addressed Fiber Bragg Structures as a New Type of Sensor Elements

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