Optical sensor with intermodal interferometry

Details Optical sensor with intermodal interferometry Optical sensor with intermodal interferometry

1990-09-13

1991-11-26

Turner, Samuel

Optics: measuring and testing

By particle light scattering

With photocell detection

356351, 25022716, G01B 902

Patent

active

050678159

ABSTRACT:
An optical sensor with intermodal interferometry, using a bimodal optical fiber propagating a first mode and giving rise to a second mode coupled to the first in response to a disturbance cause by a physical or chemical quantity of which it is wished to determine the position along the optical fiber by compensating the difference in the delay time between modes at the input of the interferometer.

REFERENCES:
patent: 4477725 (1984-10-01), Asawa et al.
patent: 4768851 (1988-09-01), Shaw et al.

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