NORIA Fiber Bragg Grating Writing System

NORIA is a device for manufacturing Fiber Bragg Gratings with the ability to vary the grating period.

Plug&Play system
FBG writing over 150 mm in a single pass
Writing of uniform or apodized gratings from 1 to 10 mm in length
Up to 16 phase masks
Photosensitive fiber or hydrogenated standard fibers

NORIA is a tool for manufacturing Fiber Bragg Gratings (FBGs). A UV laser (Coherent Excistar XS 500Hz—ArF) and a phase mask (Ibsen Photonics) are used to transfer a periodic structure into the photosensitive core of the optical fiber. The device features a revolver head that allows the period to be changed.

Plug&Play system
FBG writing over 150 mm in a single pass
Writing of uniform or apodized gratings from 1 to 10 mm in length
Up to 16 phase masks
Photosensitive fiber or hydrogenated standard fibers
Easy to operate — additionally equipped with a holder for handling loose fibers

Technical specifications

FBG
Length	10mm	Standard parameter. Optionally, for smaller gratings the length can go down to 1mm
FWHM (Full Width Half Maximum)	<150 pm	Standard parameter.
SLSR (Side Lobe Suppression Ratio)	>15 dB	Standard parameter.
Default reflectivity	>50 %	Standard parameter.
Central wavelength repeatability	± 50 pm
Profile	Gauss/ Cylinder
Cladding diameter	125 μm
Fiber coating	Acrylate/ Polyimide

Parameters: central wavelength, FWHM, SLSR

NORIA enables flexible selection of parameters, allowing the grating properties to be tailored, for example during the design of new sensors. Parameters such as central wavelength, FWHM, SLSR or reflectivity can be easily optimized. Moreover, NORIA guarantees high repeatability of the fabricated gratings. The capabilities of this device support the development of this technology. Fiber Bragg Gratings have been recognized as components for the least invasive medical examinations, enabling highly accurate measurements.

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NORIA Fiber Bragg Grating Writing System

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