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Acoustic Sensing Enhanced Fibre

YOSC-FsWFBG-N is based on the self-developed femtosecond laser automatic micromachining system to prepare a weak grating array, which is written on a fibre with thousands of weak reflectivity gratings. Using femtosecond laser direct writing technology, the center wavelength, reflectivity and other parameters can be customized according to customer needs. Combined with special coated optical fibres, it can be stably used in extremely harsh environments.

Applications

Oil and gas exploration and dynamic monitoring of oil and gas storage
Safety monitoring of structures such as tunnels, bridges, and fans
Leakage monitoring of long-distance oil and gas pipelines

Characteristics

High reliability, high sensitivity, high resolution
Written directly through the coating with high mechanical strength
Strong reuse capability, quasi distributed/distributed compatibility
High temperature resistance, radiation resistance, and electromagnetic interference resistance

Specifications

Items	YOSC-FsWFBG-N
Central wavelength (nm)	1500-1600
Grating type	Apodization or equation
Wavelength tolerance (nm)	±0.3
Grating length(mm)	6(customizable)
Reflectivity (%)	<0.1%
3dB bandwidth(nm)	>0.2(customizable)
Tensile strength(Kpsi)	≥200(PI)
Fibre type	Acrylate/Polyimide
Working temperature(℃)	Acrylate:-40 to 85; PI:-200 to 350
Grating interval(m)	Customizable
Number of gratings(/km)	Customizable

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Fibre Bragg Grating

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