Sensor coil with thermomechanically-matched spool for fiber opti

Details Sensor coil with thermomechanically-matched spool for fiber opti Sensor coil with thermomechanically-matched spool for fiber opti

1994-12-20

1996-01-23

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

054869226

ABSTRACT:
A spool for receiving a fiber optic sensor coil is selectively fabricated of materials of different coefficients of thermal expansion to thereby mimic the anisotropic thermal expansion characteristics of a potted sensor coil. The spool can include one or a pair of planar flanges fixed to the end(s) of a central cylindrical hub. The hub is preferentially fabricated in part of a polymer while the flange(s) is of low coefficient of expansion material such as titanium to thereby approximate the differential thermal expansions of a potted sensor coil in the axial and radial directions, respectively.

REFERENCES:
patent: 4793708 (1988-12-01), Bednarz
patent: 4856900 (1989-08-01), Ivancevic
patent: 5260768 (1993-11-01), Cordova et al.
patent: 5333214 (1994-07-01), Huang et al.
patent: 5371593 (1994-12-01), Cordova et al.
N. Frigo, "Compensation of Linear Sources of Non-Reciprocity in Sagnac Interferometers", Fiber Optics and Laser Sensors I, Procs. SPIE, vol. 412, p. 261 (1981).

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