论文信息 - FBG sensor for strain measurement with enhanced sensitivity by using degenerated FWM in highly nonlinear fibre

FBG sensor for strain measurement with enhanced sensitivity by using degenerated FWM in highly nonlinear fibre

A method for enhancing the sensitivity of a fibre Bragg grating (FBG) sensor by all-optical signal processing is demonstrated. Degenerated four-wave mixing (FWM) has been used to perform frequency chirp magnification, which can be used for magnifying the wavelength drift of the FBG sensor. Ultra-highly sensitive measurement of the static strain has been experimentally demonstrated with strain sensitivity of 5.40 pm/μɛ. The sensitivity has been enhanced by a factor of five.

Zuyuan He | Jiangbing Du | Zuyuan He | Jiangbing Du

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