A method for compensating intensity variations in passive in-fibre Fabry-Perot sensors is studied. To achieve passive Fabry-Perot sensors for intensity compensations, three read-out cavities are used. Two path-balanced Fabry-Perot read-out cavities are designed for two quadrature signals, and the other path-imbalanced cavity is for eliminating the effect of intensity variations via subtraction from two quadrature signals. Consequently, a compensation method proposed to eliminate intensity variations in the interferometry shows good a result in highly disturbed environments.
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页码:394 / 395
页数:2
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[1]
Lo YL, 1997, J LIGHTWAVE TECHNOL, V15, P1578, DOI 10.1109/50.618393