Journal ArticleDOI
Optically controllable millimeter wave phase shifter
A. DeFonzo,Chi H. Lee,P. S. Mak +2 more
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TLDR
In this paper, a new approach to controlling millimeter wave propagation with light was demonstrated, where phase shifts as high as 300°/cm of 94 GHz millimeter waves were observed accompanied by less than 1 dB insertion loss.Abstract:
We have demonstrated a new approach to controlling millimeter wave propagation with light. Phase shifts as high as 300°/cm of 94‐GHz millimeter waves were observed accompanied by less than 1 dB insertion loss. A straightforward model was found to account in detail for the observed behavior.read more
Citations
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Journal ArticleDOI
Optical control of millimeter-wave propagation in dielectric waveguides
Chi H. Lee,P. S. Mak,A. DeFonzo +2 more
TL;DR: In this article, a new method for controlling millimeter-wave propagation in semiconductor waveguides-optical control was demonstrated, and phase shifts as high as 300°/cm at 94 GHz were observed accompanied by less than 1 dB insertion loss.
Journal ArticleDOI
Dynamic non-linear optical processes in semiconductors
TL;DR: In this article, active non-linear optical effects in semiconductors are reviewed, which arise because of the dynamics of excited populations of charge carriers temporarily created in otherwise empty states when a beam of laser radiation is incident on the material.
Journal ArticleDOI
Picosecond microwave pulse generation
TL;DR: In this paper, a laser-activated photoconductive switch was used to generate X-band microwave pulses and these pulses were used to observe the microwave reflection from optically excited germanium.
Journal ArticleDOI
Radiation of Millimeter Waves from a Leaky Dielectric Waveguide with a Light-Induced Grating Layer
TL;DR: In this article, the radiation characteristics of millimeter-wave antenna with a light-induced grating layer were analyzed for both TM and TE polarizations at 94 GHz for both TE and TM polarizations.
Patent
Optically controlled phase shifter and phased array antenna for use therewith
TL;DR: In this article, a phase shifter is used to steer a phased array antenna using optically controlled phase shifters using much less controlling energy than using a conventional phase shift operator.
References
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Book
Introduction to solid state physics
TL;DR: In this paper, the Hartree-Fock Approximation of many-body techniques and the Electron Gas Polarons and Electron-phonon Interaction are discussed.
Journal ArticleDOI
Metal-clad planar dielectric waveguide for integrated optics*
John N. Polky,Gordon L. Mitchell +1 more
TL;DR: In this article, a metal-clad four-layer thin-film optical waveguide is presented, where the authors calculate the guided-wave losses as functions of isolation-layer thickness, type of metal, and isolation layer refractive index, and find that the TM polarized waves exhibit an absorption peak as a function of isolation thickness.
Journal ArticleDOI
Thin‐film LiNbO3 electro‐optic light modulator
TL;DR: In this paper, an out-diffused planar optical waveguide in LiNbO3 has been used to produce an efficient broad-band electro-optic phase modulator.
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Optical control of millimeter-wave propagation in dielectric waveguides
Chi H. Lee,P. S. Mak,A. DeFonzo +2 more