Method for measuring transfer function and impulse response of a single-fiber interferometric sensor.
This paper describes a method for measuring the transfer function and impulse response of a single-fiber interferometric sensor. A change in phase retardation is extracted directly from a beat photocurrent generated by superimposing the orthogonally polarized optical waves of different frequency propagating along the slow and fast axes of the fiber. Axial vibrations with a known Gaussian spectrum given to the fiber enable us to measure the transfer function and impulse response in the linear frequency range of the overall sensing system.
Ohtsuka
Y
Y
Tanaka
S
S