Sökning: "Directional couplers"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Directional couplers.
1. Design, fabrication and characterization of plasmonic components based on silicon nanowire platform
Sammanfattning : Optical interconnects based on CMOS compatible photonic integrated circuits are regarded as a promising technique to tackle the issues traditional electronics faces, such as limited bandwidth, latency, vast energy consumption and so on. In recent years, plasmonic integrated components have gained great attentions due to the properties of nano-scale confinement, which may potentially bridge the size mismatch between photonic and electronic circuits. LÄS MER
2. Novel RF MEMS Devices Enabled by Three-Dimensional Micromachining
Sammanfattning : This thesis presents novel radio frequency microelectromechanical (RF MEMS) circuits based on the three-dimensional (3-D) micromachined coplanar transmission lines whose geometry is re-configured by integrated microelectromechanical actuators. Two types of novel RF MEMS devices are proposed. LÄS MER
3. Design, Simulation and Characterization of Some Planar Lightwave Circuits
Sammanfattning : Optical devices based on planar lightwave circuit (PLC) technology have the advantages of small size, high reliability, possibility for large scale production, and potential integration with electronics. These devices are widely employed in optical telecommunications, sensing, data storage, imaging, and signal processing. LÄS MER
4. Development of a Sideband Separating SIS Mixer Technology for MM-Wavelengths
Sammanfattning : This thesis presents work done in developing instrumentation for mm-wave radio astronomy. The main subject of the thesis is a sideband separating (2SB) receiver for 85-115 GHz based on a quadrature scheme with two identical SIS mixer junctions pumped by a LO applied with 90° phase difference. LÄS MER
5. Design, Fabrication, and Characterization of Nano-Photonic Components Based on Silicon and Plasmonic Material
Sammanfattning : Size reduction is a key issue in the development of contemporary integrated photonics. This thesis is mainly devoted to study some integrated photonic components in sub-wavelength or nanometric scales, both theoretically and experimentally. LÄS MER