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Sensing Fiber

EuroPhotonics
Jun 2014
OFS
 
BRONDBY, Denmark, Feb. 13, 2014 — OFS has added the GyroSil Rad-Hard PM optical fiber to its line of sensing fibers for gyroscopes. 

Designed to perform in radiation environments, it has an 80-µm outside diameter cladding and is bend-insensitive, enabling long lengths to be wound on small-diameter coils.

Its pure silica core fiber offers radiation-induced losses many times less than optical fibers doped with germanium, an element highly sensitive to radiation. The birefringent fiber has a center wavelength of 1550 nm and polarization maintaining (PM) properties of low beat length and h-parameter. The outer coating diameter is 145 µm.

Gyroscope applications that could benefit from the fiber include space, high- altitude and defense-related navigation systems.



GLOSSARY
cladding
The low-refractive-index material that surrounds the core of an optical fiber to contain core light while protecting against surface contaminant scattering. In all-glass fibers, the cladding is glass. In plastic-clad silica fibers, the plastic cladding also may serve as the coating.
germanium
A crystalline semiconductor material that transmits in the infrared.
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