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 14 of 14 for “"electrooptic"”.
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Electrooptic mach-zehnder modulators in gallium arsenide
… travelling-wave modulators, utilizing the electrooptic effect, are one class of devices currently being investigated for converting electrical signals to optical signals in applications involving high-speed data transmission. Modulators fabricated on semiconductor substrates, such as GaAs …
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Broadband electrooptic modulators based on gallium arsenide materials
… to the optical spectrum. The design of electrooptic ultra-broadband modulators operating at wavelengths longer than A=0.65ptm is investigated. Novel epitaxial heterostructures lattice-matched to GaAs - a p-i-n structure with a dilute core and a n-i-n Metal Oxide Semiconductor (MOS) …
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Electrooptic modulation of infrared radiation in planar cadmium sulphide waveguides
Abstract available p. 6-7
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Electrooptic electric field sensor for dc and extra-low-frequency measurement
… carried out towards the development of an electrooptic sensor for DC and extra low frequency electric field measurement. Available cubic electrooptic crystals were compared from the sensor sensitivity point of view. A new figure of merit was used taking into account the attenuation of the …
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Electrooptic Birefringence Investigations of Adsorbed Water Properties Indilute Aqueous Bentonite Suspensions
Made available in DSpace on 2014-12-12T00:17:49Z (GMT). No. of bitstreams: 1 7219801.pdf: 2347967 bytes, checksum: 2eea569f85b3766a83bad11ec9d8ea8f (MD5) Previous issue date: 1972
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Electrooptic Birefringence Investigations of Particle Dipole Orientation and Associated Water Properties in Dilute Aqueous Clay Suspensions
Made available in DSpace on 2014-12-12T00:17:59Z (GMT). No. of bitstreams: 1 7412175.pdf: 1776832 bytes, checksum: 9b7d99e71076cc5dbda7119fbac0205c (MD5) Previous issue date: 1973
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Modelling of quantum well electrooptical devices
… to the technological importance of quantum well electrooptical modulators in general and, in particular, as building blocks of self-electrooptic effect devices (SEEDs), in this thesis, we have undertaken to create a theoretical model which can accurately emulate and predict, starting from basic …
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Picosecond Dynamics of Free-Carrier Populations, Space-Charge Fields, and Photorefractive Nonlinearities in Zincblende Semiconductors
… which produces an index change via the linear electrooptic effect. The photorefractive effect has been widely studied for a variety of materials and device applications, mainly because it allows large index changes to be generated with laser beams having only a few milliwatts of average …
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Graphene Modulators for Silicon Photonic Optical Links
… integrated photonics, and specifically on the electrooptic modulator. I have focused on a double single-layer graphene modulator design in three different configurations that can be used for different types of optical links. This includes a graphene-based electro-absorption modulator, ring …
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MOCVD GaN sensorių su chemiškai modifikuotu paviršiumi tyrimai /
… present in the material and how they affect the electrooptical properties. The analysis methods were primarily divided into two categories: contactless and contact-based. Contactless methods included optical microcopy, photoluminscence (PL) measurements and microwave probed photosconductivity …
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Adaptive Pre-Distort.ion for Laser Diodes with Direct Modulation Frequencies up to 1 GHz
… to the need. In this way, the enhanced electrooptic system has become capable of maintaining low distortion performances during circumstances where small changes to laser parameters can be expected. Also, the adaptive design holds promise for reducing certain network service costs, as …
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Heterogeneous integration of two-dimensional materials for on-chip optical interconnects
… system enables a high-contrast (> 10 dB) electrooptic modulation by electrically tuning the Fermi level of graphene. High-speed modulation is possible using high-speed capacitive gating, such as through a double layer graphene stack encapsulated in 2D hexagonal boron nitride layers. The …
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Design, construction, and characterization of an ultra-sensitive, high-precision fast ion-beam spectrometer for the study of molecular ions
… at 920 nm. NICE-OHMS is set up using two electrooptic modulators and a medium finesse cavity (F=450) with a free spectral range of 113 MHz. The optical cavity increases the path length of absorption, and the heterodyne spectroscopy reduces the noise to near the shot noise limit. The laser …
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Integrated Inp Photonic Switches
Photonic switches are becoming key components in advanced optical networks because of the large variety of applications that they can perform. One of the key advantages of photonic switches is that they redirect or convert light without having to make any optical to electronic conversions and vice …