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Effect of wavelength on metrological characteristics of non-holographic fiber specklegram sensor

2015; Springer Nature; Volume: 5; Issue: 1 Linguagem: Inglês

10.1007/s13320-014-0210-3

1674-9251

Víctor H. Aristizábal, Alejandro Hoyos, Édgar Rueda, Nelson Darío Gómez, Jorge A. Gómez,

Optical Polarization and Ellipsometry

In this paper, we report some results about the effects of varying the wavelength in a structure of a non-holographic fiber specklegram sensor. In these arrangements, the speckle pattern produced by a multi-mode optical fiber is coupled to the asingle-mode optical fiber with lower numerical aperture, which produces a filtering effect that can be used as an optical transduction mechanism. The influence of the wavelength on the sensor performance is evaluated by changing the laser wavelength, and a strong effect on the linearity and reproducibility of its response is found. Lasers emitting at 1310 nm, 1550 nm, and 1625 nm are used.