Bragg grating


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Bragg grating

n.
A diffraction grating created within the structure of a substance, especially an optical fiber, by periodically varying the index of refraction in successive layers within the substance, causing certain frequencies of light passing through the substance to be reflected away and effectively filtered out.

[After Sir William Henry Bragg and Sir William Lawrence Bragg.]
References in periodicals archive ?
To overcome this challenging step, Teixeira Duarte chose HBM's technology, including sensors and optical interrogators with Fiber Bragg Grating (FBG) technology to monitor strain at critical points in the structure, electrical sensors for reading of various signals including inclination, temperature, wind and sea current.
Luna Innovations will provide key optical components for integration with Meggitt's electronic controllers and FBG (Fibre Bragg Grating) sensors.
The technique replaces the laser cavity end mirror with a volume Bragg grating (VBG) and Michelson interferometer to select lasing at one of the cavity longitudinal eigenmodes whilst suppressing others.
Tenders are invited for Fiber bragg grating with pi phase shift on erbium doped fiber
The new pulsed laser module is optically coupled to a single-mode fibre pigtail that includes a fibre Bragg grating (FBG) to stabilise the wavelength throughout a variety of operating conditions.
The company says the new online portal, which looks at selection, installation, data acquisition, and analysis of electrical as well as optical strain gauges - namely those based on Fiber Bragg Grating technology (FBG) -, provides users with an easy and intuitive step-by-step guide.
Fiber Bragg grating (FBG) has been proposed and widely used in the optic communication and sensing fields due to their prominent advantages, such as immunity to electromagnetic noise, small profile, lightweight, and high resistance to hostile environments [2-4].
Meanwhile, slanted fiber Bragg grating (sFBG) is more elegant way of fabric-thickness-direction light delivery.
Thus, this paper establishes a similar simulation of the deformation and destruction of surrounding rock of roadway using the fiber Bragg grating sensing technology.
and Sasaki, T., (2014) "Acoustic Emission Measurement by Fiber Bragg Grating Glued to Cylindrical Sensor Holder", Advances in Materials Science and Engineering, Vol.
Firstly, cross-sensitivity issues were discussed for Fiber Bragg Grating coupling under thermal conditions of temperature and strain in this paper.
We will derive the relevant results using the transfer matrix method and we will apply these results to study the evolution of longitudinal electromagnetic waves across a fiber Bragg grating. We will evaluate transmission coefficients and transmission times of specific Bragg grating fibers and compare the specific results of the well-established one coupled mode approximation with those of the theory of finite periodic systems (TFPS) and the Mathieu functions approximation.