3m Innovative Properties Company

Michael R Matthews

Pranay G Sinha

James Francis Brennan, Iii

Dale E Elder

John A Valenti

Chad H Byrd

Xudong Fan

Steven Y Yu

Gary A Shreve

Jerome C Porque

Edward Hernandez

Gerald A Beauchesne

James F Brennen, Iii

Gerad A Beauchesne

Edward Hernadez

A detection system for monitoring an engineered structure includes an array of sensors disposable in a predetermined pattern on the engineered structure and disposable between a surface of the engineered structure and a protective coating substantially covering the surface. The detection system also includes a data acquisition system in communication with the array of sensors for retrieving data from the sensors. The array of sensors can provide data corresponding to at least one of a degree of cure of the protective coating, a health of the cured protective coating, and a corrosion rate of the engineered structure at each of the sensors.

Coating impedance monitoring system

A tunable interferometer for creating gratings of variable periodicity in an optical waveguide is disclosed. The interferometer includes a beam splitter for producing first and second write beams from an input beam. First and second reflectors receive the first and second write beams, respectively, from the beam splitter and direct the first and second write beams to intersect at a fixed location. The angle of intersection of the first and second write beams is a function of impingement locations of the first and second write beams on the first and second reflectors. The impingement locations of the first and second write beams on the first and second. reflectors may be varied to vary the angle of intersection at the fixed location.

Tunable talbot interferometers for fiber bragg grating writing

A method for screening the quality of an optical component including the step of simulating the performance of the optical component. The step of simulating includes the step of measuring the optical phase &phgr; of the optical component, wherein the step of measuring comprises indirectly measuring the optical phase &phgr; of the optical component using a scanning laser having a scanning step size &Dgr;&ohgr; and a modulation frequency &ohgr; such that &Dgr;&ohgr;/&ohgr; . The light throughput R of the optical component is then measured. A transfer function H as a function of optical frequency &ohgr; is constructed where H(&ohgr;)&equals;R(&ohgr;)exp&lsqb;j&phgr;(&ohgr;)&rsqb;, and the performance is simulated using the measured value of the optical phase and the light throughput into the transfer function.

Quality review method for optical components using a fast system performance characterization

A device including a chirped Bragg grating, said grating having (a) a reflection bandwidth having a full-width at half maximum that is greater than 6 nm, and (b) a reflection delay ripple amplitude of less than &plusmn;50 ps.

Wide-bandwidth chirped fiber bragg gratings with low delay ripple amplitude

Wide-bandwidth chirped fiber Bragg gratings with low delay ripple amplitude

Growing community of inventors

Austin, TX, United States of America

Michael R Matthews