Spatially-weighted two-mode optical fiber sensors

Details Spatially-weighted two-mode optical fiber sensors Spatially-weighted two-mode optical fiber sensors

1991-08-29

1993-06-29

Lee, John D.

Optical waveguides

Optical waveguide sensor

385 43, 385 48, G02B 602

Patent

active

052241823

ABSTRACT:
Tapered two-mode optic fibers are used as sensors with sensitivity varying as a function of length. The optical fiber sensors act as vibrational-mode filters thereby performing initial signal processing of the sensor signal. The sensors are based on the differential propagation constant in a two-mode fiber that is directly dependent on the normalized frequency or V-number. Tapering the fiber changes the V-number and hence can change the sensitivity of the sensor along its length. By choosing an appropriate weighting function in the manufacture of the sensor, it is possible to implement vibrational-mode analysis, vibrational-mode filtering and other functions that are critical in control system applications.

REFERENCES:
patent: 4787689 (1988-11-01), Korotky et al.
patent: 4804248 (1989-02-01), Bhagavatula
Vengsarkar et al, "Elliptical-Core, Two-Mode Optical Fibre Sensors as Vibration-Mode Filters", Electronics Letters, vol. 27, Jun. 1991, pp. 931-932.

Affiliated with

Also associated with

Rating

Spatially-weighted two-mode optical fiber sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spatially-weighted two-mode optical fiber sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatially-weighted two-mode optical fiber sensors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1762222