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Fibre optic load sensors with high transverse strain sensitivity based on long-period gratings in B/Ge co-doped fibre

Fibre optic load sensors with high transverse strain sensitivity based on long-period gratings in B/Ge co-doped fibre

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A novel application is reported of long-period fibre gratings produced in non-high-birefringence fibre as fibre optic load sensors based on the measurement of the transverse strain induced birefringence. A transverse strain sensitivity some 800 times higher than that previously reported for fibre Bragg gratings has been achieved.

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