Fiber Bragg Grating Sensors
A variation of the period of the grating inscripted in a fiber optic – induced by mechanical or thermal perturbation – causes a shift of the reflected peak wavelength, due to the related optical path length
This paper proposes the interferometric method for arrays inscription of type I Bragg gratings on the unified segment of the standard telecommunication single-mode optical fiber, using preliminary inscription o.
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A variation of the period of the grating inscripted in a fiber optic – induced by mechanical or thermal perturbation – causes a shift of the reflected peak wavelength, due to the related optical path length
Photosensitivity refers to a permanent change in the index of refraction of the fiber core when exposed to light with characteristic wavelength and intensity that depend on the core material. The fiber Bragg
Ultra-short fiber Bragg gratings (US-FBGs), due to their compact structure and high spatial resolution, have significant application potential in the field of high-density multiparameter
We propose a novel simultaneous multi-user en/decoder using super-structure fiber Bragg gratings (SFBGs) for multi-channel optical code-division multiple-access (OCDMA) applications.
This paper reviews the state of the art of fiber Bragg gratings (FBGs) as analog all-optical signal processing units. Besides the intrinsic advantages of
In the approach presented here, a series of FBG elements at different nominal wavelengths forms a multiplexed array of sensors along a single fiber path.
The optical fiber includes a reference Fiber Bragg grating (FBG) configured to reflect a light propagating in the optical fiber at a reference intensity and a first encoder FBG configured to
Chirped FBG arrays in a fiber with a high content of GeO in the core are obtained. This paper proposes the interferometric method for arrays inscription of type I Bragg gratings on the
Compared with traditional interrogation methods, photonic integration interrogation technology based on array waveguide grating has obvious advantages in high-speed and high
This work proposes an encrypted optical fiber tag based on an encoded fiber Bragg grating (FBG) array that is fabricated using a point-by-point femtosecond laser pulse chain inscription
Despite the improvements in optical fiber manufacturing and advancements in the field in general, basic optical components such as mirrors, wavelength filters, and partial reflectors have been a challenge
However, the amount of information that can be encoded is constrained by wavelength band, fiber length, etc. These limitations restrict the encoded optical fibers from being used in applications that
In this work, the fabrication, demodulation, and applications of large-scale FBG arrays are reviewed. Firstly, the on-line fabrication technology and process of large-scale FBG arrays are
To achieve data-driven intelligence in engineering applications, the key requirements for distributed optical fiber sensor networks are large capacity, long distance, dense distribution, fast response, and
Conventional methods of physically marking fibers are cumbersome, and the label information is accessible to any potential user. In this work, we propose and demonstrate an encrypted optical fiber
Abstract: Fiber Bragg grating (FBG) array, consisting of a number of sensing units in a single optical fiber, can be practically applied in quasi-distributed sensing networks. Serious signal crosstalk
A two-user OCDMA system based on superstructured fiber Bragg grating (SSFBG) encoder/decoder with equivalent phase shift is demonstrated. Each user can be decoded
Exemplary embodiments pertain to the art of encoded optical fibers using Fiber Bragg Gratings (FBGs). FBGs are wavelength-selective reflectors that can be use in fiber optic...
In this paper, we propose a novel approach to implementing unipolar-bipolar phase-time encoding/decoding for optical code division multiple access (CDMA) networks. In the proposed
A new method for realizing spectral phase optical code-division multiple-access (OCDMA) coding based on step chirped fiber Bragg gratings (SCFBGs) is proposed and the corresponding encoder/decoder
In this paper, we report a series of incremental optical coding and decoding sensors using their respective fiber Bragg grating superstructure (SS-FBG). We performed a comparative
Fiber Bragg Gratings (FBGs) are classified based on their refractive index modulation profile, periodicity, and spectral response. The primary types include uniform, chirped, tilted, and phase-shifted FBGs,