Related Experiment Video
Updated: Jul 19, 2026

08:23
A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
Optical inclinometer based on a single long-period fiber grating combined with a fused taper
O Frazão1, R Falate, J L Fabris
1INESC-Porto, Rua do campo Alegre, Porto, Portugal. ofrazao@inescporto.pt
Optics Letters
|September 27, 2006
Abstract:
A new concept to measure rotation angles based on a fiber-optic modal Mach-Zehnder interferometer is demonstrated by using a nonadiabatic taper cascaded with a long-period fiber grating. Information about the magnitude of the rotation angle can be obtained from the measurement of the interference pattern visibility, and under certain conditions it is also possible to obtain the sign of the rotation angle from the induced phase variation in the fiber interferometer.

