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 11 of 11 for “"telecom wavelength"”.
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Telecom Wavelength Quantum Devices
… into the near infrared, into the low absorption wavelength windows utilised in long-haul optical telecommunication. Initial experiments succeeded in interfering O-band (1260—1360 nm) photons from an InAs/GaAs QD with dissimilar photons from a laser, an important mechanism for quantum …
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Resonance fluorescence of novel quantum emitters
Quantum dots (QD) emitting near the telecommunication O-band and excitons believed to be localized on defects in WSe2 monolayers are investigated using optical spectroscopy and resonance fluorescence (RF). The development of light sources emitting around 1300 nm is motivated primarily by the …
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Efficient Light Coupling Techniques for Integrated Photonics
… a broadside beam routing mechanism in the telecom wavelength using a high index dielectric (i.e. Si) micro-prism structure. I extended the design to an elastic PDMS (Polydimethylsiloxane) platform to achieve beam scanning capability in both telecom and visible wavelength ranges diversifying …
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Generation, manipulation and detection of NIR and MIR entangled photon pairs
… silicon waveguides and microring resonators at telecom wavelength was also investigated. For the detection of MIR photon pairs, a suitable detection unit was developed as well. Moreover, even though the long-term goal of the project was the realization of a silicon quantum photonic circuit, I …
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On-chip silicon based photonic structures : photonic band gap and quasi-photonic band gap materials
… multi channel filter with tunability around two telecom wavelength 1.55[mu]m and 1.3[mu]m by electrostatic force is realized. Four widely spaced resonant modes within the photonic band gap are observed, which is in good agreement with numerical simulations.
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Nonlinear Optics in III-V Quaternary Semiconductor Waveguides
… display zero-dispersion points at the specific wavelength ranges of interest. The designed waveguides are thus expected to demonstrate efficient nonlinear optical interactions. Next step is the fabrication of these devices with the goal to experimentally assess their nonlinear optical …
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Engineering the optical properties of subwavelength devices and materials
… the one hand, needs to absorb and detect single telecom-wavelength photons (A = 1.55 pm) with near-perfect efficiency, but on the other hand, has an absorber that is subwavelength in its thickness (A/390). For both cases, it is simply not enough to look for alternative materials with the desired …
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Low temperature heterogeneous integration of germanium on silicon
… multiplexing. Germanium (Ge)’s absorption in the Telecom wavelength range (1.3-1.55 µm), its transparency in the mid-longwave infrared (mid-LWIR) range, and its ease of integration on a Si backbone make it a perfect candidate for photodetectors (PDs) for Telecom optical interconnects and …
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Micro-transfer print integration of high-speed photodetectors to SOI platform
… (a-Si) with a refractive index of 3.1 in the telecom wavelength range is utilized. This strategy aims to achieve maximum coupling. In transfer printing process, it is crucial to efficiently release the PD coupons along with smooth interface, for successful printing on target wafer. This work …
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Silicon Photonics for All-Optical Processing and High-Bandwidth-Density Interconnects
… holistic analysis for the full link captures the wavelength-channel-spacing dependent characteristics, provides some methodologies for device design in the WDM-operation context, and provides performance predictions based on current best-of-class silicon photonic devices. The key results of the …
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Novel mechanical alignment and component fabrication for wavelength-selective optical switches
… optical switching infrastructure in the global telecom network. Two-dimensional free-space wavelength selective switches (WSSs) offer significantly increased integration over current linear WSS technology, providing a step change in switching capacity. The fabrication of two-dimensional WSSs …