Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"optical modulator"”.
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Theoretical studies of the electro-optic properties of quantum-well structures
… investigated with particular emphasis on a novel optical modulator based on the band-filling effect, called the barrier reservoir and quantum-well electron transfer structure (BRAQWETS).
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Optical generation of mm-wave signals for use in broadband radio over fiber systems
… the network. The radio signals are placed on an optical carrier and distributed by means of an optical fiber network to the base stations (BS). In the BS the optical signals heterodyne in a photodiode to produce the radio signals which are then sent via a wireless link to the mobile units (MU). …
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Second-order nonlinear optical interactions and cascading effects in thinorganic films
… of the dyes possessing second order nonlinear-optical properties are proposed. The work shows how nonlinear-optical processes in such structures can be implemented by electro-optical and opto-optical control circuit signals. In this paper we consider the complete cycle of fabrication of several …
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A sensor for combustion thermometry based on blue diode lasers.
… between the two locked laser beams using an optical modulator.
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Advances in Raman hyperspectral compressive detection instrumentation for fast label free classification, quantitation and imaging
… digital micromirror devise (DMD). The DMD is an optical modulator that consists of an array of programmable 10μm mirrors that can reflect photons in either +12° or -12° to the incoming light. The DMD is tilted such that the +12° photons go back through the focusing lens and the VHG and is focused …
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An experimental study of light-material interaction at subwavelength scale
… of light. While there are pressing needs of optical applications with higher resolution and efficiency, one important hurdle is the so-called diffraction limit that originates from light’s inherent wave nature. Based on the localized electromagnetic field generation due to the resonant …
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Investigation and development of a novel metrology standard for the measurement of relative intensity noise and frequency chirp of DFB lasers in optical networks
… selection of a high output power version allows optical attenuation to be applied which provides a further 20dB attenuation of system spontaneous noise. Application of the ‘flat’ low noise optical rf noise source from 10MHz to 20GHz has been demonstrated for the first time in optical rf …
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A High Temperature RF Front-End of a Transceiver for High Speed Downhole Communications
… between the surface and the downhole with an optical fiber cable and uses a coaxial cable to connect tools with the optical node in downhole to meet the growing needs for higher data rates. However, the downhole communication system between the tools and the optical modulator remains the …