Search Results - "WALKER, Robert B"

Extreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings by Mihailov, Stephen J, Grobnic, Dan, Hnatovsky, Cyril, Walker, Robert B, Lu, Ping, Coulas, David, Ding, Huimin

“…The femtosecond laser-induced fiber Bragg grating is an effective sensor technology that can be deployed in harsh environments. Depending on the optical fiber…”
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Plane-by-Plane Inscription of Grating Structures in Optical Fibers by Lu, Ping, Mihailov, Stephen J., Ding, Huimin, Grobnic, Dan, Walker, Robert B., Coulas, David, Hnatovsky, Cyril, Naumov, Andrei Yu

“…Plane-by-plane fabrication of fiber Bragg gratings in optical fibers using a short-pulse femtosecond IR laser is proposed and demonstrated. By incorporating a…”
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Fiber Bragg Grating Wavelength Drift in Long-Term High Temperature Annealing by Grobnic, Dan, Hnatovsky, Cyril, Dedyulin, Sergey, Walker, Robert B, Ding, Huimin, Mihailov, Stephen J

“…High-temperature-resistant fiber Bragg gratings (FBGs) are the main competitors to thermocouples as sensors in applications for high temperature environments…”
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Ultrafast Laser Processing of Optical Fibers for Sensing Applications by Mihailov, Stephen J, Hnatovsky, Cyril, Abdukerim, Nurmemet, Walker, Robert B, Lu, Ping, Xu, Yanping, Bao, Xiaoyi, Ding, Huimin, De Silva, Manny, Coulas, David, Grobnic, Dan

“…A review of recent progress in the use of infrared femtosecond lasers to fabricate optical fiber sensors that incorporate fiber Bragg gratings (FBG) and random…”
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Through-The-Coating Fabrication of Fiber Bragg Grating Relative Humidity Sensors Using Femtosecond Pulse Duration Infrared Lasers and a Phase Mask by Mihailov, Stephen J., Ding, Huimin, Hnatovsky, Cyril, Walker, Robert B., Lu, Ping, De Silva, Manny

“…Fiber Bragg grating (FBG) relative humidity (RH) sensors are fabricated in commercially available polyimide (PI)-coated optical fibers with diameters of 50 and…”
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Nanoscale morphology and thermal properties of low insertion loss fiber Bragg gratings produced using the phase mask technique and a single femtosecond laser pulse by Hnatovsky, Cyril, Silva, Kasthuri De, Abdukerim, Nurmemet, Walker, Robert B, Ding, Huimin, Mihailov, Stephen J

“…Fiber Bragg gratings with a very low insertion loss are inscribed using the phase mask technique and a single infrared (800 nm) femtosecond laser pulse. The…”
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Nutrition and Isolation in a Rural US Population over 80 Years Old: A Descriptive Analysis of a Vulnerable Population by Wellman, Courtney D., Ferguson, Andrew, McIntosh, Thomas, Korkmaz, Alperen, Walker, Robert B., Franks, Adam M.

“…Factors allowing rural, community-dwelling 80+ year-olds to thrive remain unexplored. Isolation can impact this vulnerable population. In this study, patients…”
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Ensuring contact: calling rural Appalachian older adults during the COVID-19 epidemic by Walker, Robert B, Grome, Michael, Rollyson, William, Baus, Adam D

“…Older adults, especially those aged 85 years or older, remain at significantly higher risk for COVID-19. This group, along with those with pre-existing heart…”
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High Sensitivity Fiber Bragg Grating Humidity Sensors Made With Through-the-Coating Femtosecond Laser Writing and Polyimide Coating Thickening by Mihailov, Stephen J., Ding, Huimin, Szabo, Katherine, Hnatovsky, Cyril, Walker, Robert B., Lu, Ping, De Silva, Manny

“…Durable fiber Bragg grating (FBG) relative humidity (RH) sensors are fabricated in commercially available polyimide (PI) coated 50-µm diameter Ge-doped silica…”
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Bragg gratings written in All-SiO2 and Ge-doped core fibers with 800-nm femtosecond radiation and a phase mask by MIHAILOV, Stephen J, SMELSER, Christopher W, GROBNIC, Dan, WALKER, Robert B, PING LU, HUIMIN DING, UNRUH, James

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Direct evidence of tilted Bragg grating azimuthal radiation mode coupling mechanisms by Walker, Robert B, Mihailov, Stephen J, Grobnic, Dan, Lu, Ping, Bao, Xiaoyi

“…A number of useful fiber optic devices depend on being able to predict and manipulate the radiation field emitted by tilted fiber Bragg gratings. Previously we…”
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Bragg grating writing through the polyimide coating of high NA optical fibres with femtosecond IR radiation by Mihailov, Stephen J., Grobnic, Dan, Walker, Robert B., Smelser, Christopher W., Cuglietta, Gino, Graver, Tom, Mendez, Alexis

“…Bragg gratings are written with ultrafast 800 nm radiation and a phase mask through the polyimide polymer coatings of commercially available high NA fibres…”
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Bragg Gratings Made in Highly Nonlinear Bismuth Oxide Fibers With Ultrafast IR Radiation by Grobnic, D., Walker, R.B., Mihailov, S.J., Smelser, C.W., Ping Lu

“…High-quality Bragg gratings with refractive index modulations > 7 × 10 -4 were induced in highly nonlinear bismuth oxide glass fibers using ultrafast infrared…”
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High resolution temperature mapping of gas turbine combustor simulator exhaust with femtosecond laser induced fiber Bragg gratings by Walker, Robert B., Sangsig Yun, Huimin Ding, Charbonneau, Michel, Coulas, David, Ping Lu, Mihailov, Stephen J., Ramachandran, Nanthan

“…Femtosecond infrared (fs-IR) laser written fiber Bragg gratings (FBGs), have demonstrated great potential for extreme sensing. Such conditions are inherent in…”
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Virtual intubation training at a remote military site by Walker, Robert B, Underwood, P K, Bernhagen, Mary, Markin, Nicholas, Boedeker, Ben H

“…To provide medical support to the far forward battlefield, training in advanced medical technologies is essential for military healthcare providers. To meet…”
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The use of virtual training to support insertion of advanced technology at remote military locations by Walker, Madison I, Walker, Robert B, Morgan, Jeffrey S, Bernhagen, Mary, Markin, Nicholas, Boedeker, Ben H

“…Effective training in advanced medical technologies is essential for military healthcare providers to support the far forward battlefield. The use of modern…”
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Review of femtosecond infrared laser-induced fibre Bragg grating sensors made with a phase mask by Mihailov, Stephen J, Grobnic, Dan, Smelser, Christopher W, Walker, Robert B, Lu, Ping, Ding, Huimin

“…Purpose - The purpose of this paper is to present a review of research performed at the Communications Research Centre Canada on sensing applications of…”
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Ensuring contact: Calling rural Appalachian older adults during the Covid-19 epidemic by Robert B Walker, Michael Grome, William Rollyson, Adam D Baus

“…Introduction: Older adults, especially those aged 85 years or older, remain at significantly higher risk for COVID-19. This group, along with those with…”
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Ensuring contact: Calling rural Appalachian older adults during the COVID-19 epidemic by Robert B Walker, Michael Grome, William Rollyson, Adam D Baus

“…Introduction: Older adults, especially those aged 85 years or older, remain at significantly higher risk for COVID-19. This group, along with those with…”
Get full text

Ensuring contact: Calling rural Appalachian older adults during the COVID-19 epidemic by Robert B Walker, Michael Grome, William Rollyson, Adam D Baus

“…Introduction: Older adults, especially those aged 85 years or older, remain at significantly higher risk for COVID-19. This group, along with those with…”
Get full text