Inventor

MACDOUGALL TREVOR W

US23 patents

⚠️ This page may combine multiple inventors who share the name “MACDOUGALL TREVOR W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MACDOUGALL TREVOR W

MINNESOTA MINING & MFG

Verdet constant temperature-compensated current sensor

Fiber optic current sensor with bend birefringence compensation

Holder for annealing fiber optic coils

Method of annealing a fiber within a coiled tube to thereby make a fiber coil for a Faraday-effect current-sensor

Faraday-effect sensing coil with stable birefringence and method of making same

Faraday-effect sensing coil with stable birefringence

Holder for annealing fiber optic coils

WEATHERFORD LAMB

Fluid diffusion resistant glass-encased fiber optic sensor

Fluid diffusion resistant glass-encased optical sensor

Fluid diffusion resistant glass-encased optical sensor

Pure silica core, high birefringence, single polarization optical waveguide

Pure silica core, high birefringence, single polarization optical waveguide

CIDRA CORP

Compression-tuned grating-based optical add/drop multiplexer

Method for annealing an optical waveguide having a bragg grating to accelerate ageing

Method for restoring or increasing photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide

Method for restoring photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide

Alignment and imaging system for writing Bragg gratings

3M INNOVATIVE PROPERTIES CO

Ceramic fiber optic current sensor

Passively compensated optical fibers

FERNALD MARK R

Large diameter optical waveguide splice

Large diameter optical waveguide splice

KERSEY ALAN D

Tunable optical filter having large diameter optical waveguide with bragg grating and being configured for reducing the bulk modulus of compressibility thereof

(unassigned)

Concatenated magneto-optic field sensors