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Dual wavelength fibre interferometer with wavelength selection via fibre Bragg grating elements

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2 Author(s)
Kersey, A.D. ; US Naval Res. Lab., Washington, DC, USA ; Berkoff, T.A.

The use of intra-core fibre gratings to provide the selection of two stable, closely spaced wavelength-components at the output of a fibre interferometer is reported. An unambiguous sensing range in the optical path difference of an interferometer of +or-0.49 mm is demonstrated using two gratings spaced by 2.5 nm.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 13 )