Zobrazeno 1 - 10
of 23
pro vyhledávání: '"HAROLD E. HAGER"'
Publikováno v:
2009 IEEE Avionics, Fiber-Optics and Phototonics and Photonics Technology Conference.
The authors presented the challenges to produce hermetic fiber optic module for flight critical avionics applications. We have provided viable approaches to produce hermetic fiber optic modules for different aerospace platform applications.
Publikováno v:
SPIE Proceedings.
With the growing maturation of vertical cavity surface emitting laser (VCSEL) technology as a source of commercial off-the-shelf components, the question of VCSEL suitability for use in avionics-qualifiable fiber-optic systems naturally follows. This
Publikováno v:
SPIE Proceedings.
Packard-Hughes Interconnect has developed a detachable connector for plugging to military and commercial aerospace fiber-optic modules. The connector comprises floating spring loaded fiber-optic termini with 1-mm ceramic ferrules, all contained withi
Publikováno v:
SPIE Proceedings.
The survivability for satellite applications of two classes of quantum-well-based fiberoptic light sources was evaluated by MeV-proton space-environment simulation studies. The first was an InGaAs/GaAs strained-layer quantum-well (QW) laser; the seco
Autor:
Pamela L. Derry, Eric Y. Chan, K.C. Chiu, Chi-Shain Hong, Richard J. Fu, Luis Figueroa, Harold E. Hager
Publikováno v:
Laser Diode Technology and Applications IV.
The effect of high temperature on the threshold gain and threshold current density of an InGaAs (GaAs based) strained quantum well laser is examined both theoretically and experimentally. It is shown that designing a quantum well laser for low thresh
Autor:
Bruce R. Scharf, Mark Beranek, Eric Y. Chan, Raymond W. Huggins, Mark Voitek, Darrell L. Livezey, Barbara A. Capron, Joseph L. Mantz, Chi-Shain Hong, David M. Griffith, Harold E. Hager
Publikováno v:
SPIE Proceedings.
A standardized interface for fiber-optic sensor systems based on wavelength-division- multiplexing (WDM) has been successfully demonstrated using a novel broad-spectrum quantum-well LED and a high-resolution waveguide spectrograph. This efficient int
Autor:
Raymond H. Colton, Harold E. Hager
Publikováno v:
Journal of The Electrochemical Society. 133:2530-2535
The surface modification of fluorine‐doped tin oxide by the underpotential deposition of noble metals (Rh, Ru, Pd, Pt, and Au) strongly influences the rate of sulfide‐polysulfide reduction at the electrode. X‐ray photoelectron spectroscopy (XPS
Autor:
Harold E. Hager
Publikováno v:
Journal of Applied Electrochemistry. 16:189-195
Despite growing interest in pulse current electroplating, published theories have not evolved beyond treatments of simple, single-step reaction kinetics. This omission of multiple-step kinetics and associated reaction pseudocapacitance is responsible
Publikováno v:
Journal of Applied Physics. 59:3328-3331
The use of a piezoelectric crystal as the substrate for a photoresist film provides unique resist characterization capabilities. In particular, the photoresist near the substrate is probed in real time. The basis of this measurement technique is desc
Autor:
Harold E. Hager
Publikováno v:
Chemical Engineering Communications. 43:25-38
Hydrodynamic coupling between a fluid and a planar piezoelectric crystal operating in the thickness shear mode provides a powerful, yet remarkably simple means to characterize fluid properties. Equations describing hydrodynamic coupling are developed