摘要:
Methods and devices for manufacturing carbon nanotube based field effect transistors are disclosed including providing a substrate; printing a gate electrode layer onto the substrate and sintering and/or UV curing; printing a gate isolation layer onto the gate electrode and air drying and/or UV curing; printing one or more carbon nanotube channel layers onto the gate isolation layer, wherein each carbon nanotube channel layer is air dried prior to subsequent printings; and printing a source and drain electrode layer onto the one or more carbon nanotube channel layers and sintering and/or UV curing. Other embodiments are described and claimed.
摘要:
The present invention provides a system, method and apparatus for improved electrical-to-optical transmitters (100) disposed within printed circuit boards (104). The heat sink (110, 200) is a thermal conductive material disposed within a cavity (102) of the printed circuit board (104) and is thermally coupled to a bottom surface (112) of the electrical-to-optical transmitter (100). A portion of the thermal conductive material extends approximately to an outer surface (120, 122 or 124) of a layer (114, 116 or 118) of the printed circuit board (104). The printed circuit board may comprise a planarized signal communications system or an optoelectronic signal communications system. In addition, the present invention provides a method for fabricating the heat sink wherein the electrical-to-optical transmitter disposed within a cavity of the printed circuit board is fabricated. New methods for flexible waveguides and micro-mirror couplers are also provided.
摘要:
An optical device has a housing for receiving a plurality of optical fibers adapted to carry optical signals. A filter is disposed within the housing for transmitting specific optical signals having a predetermined wavelength range. A first ball lens is coupled to the housing and is positioned relative to the filter and the optical fibers to selectively collimate and focus the optical signals. A second ball lens is coupled to the housing and is also positioned relative to the filter and optical fibers to selectively collimate and focus the optical signals. Both ball lenses are optically coupled to the filter.
摘要:
Accordingly, a beam-splitting ball lens is provided. The beam-splitting ball lens has: a ball lens; and a beam-splitter filter disposed within the ball lens. The ball lens preferably has first and second portions wherein the beam-splitter filter is disposed at a junction between the first and second portions. The beam-splitting ball lens can further have a mid-plane optical element disposed at the junction such as, a wavelength selective filter, a polarization component, an amplitude modulation mask, a phase modulation mask, a hologram and/or a grating. Also provided is a method for fabricating the beam-splitting ball lens of the present invention. The method includes the steps of: providing the ball lens; and disposing the beam-splitter filter within the ball lens. Preferably the disposing step includes: dividing the ball lens into first and second portions; and disposing the beam-splitter filter at the junction between the first and second portions. Also provided is a mount for the beam-splitting ball lens of the present invention. The mount has a body, the body having screws to retain the beam-splitting ball lens therein. The body further having access holes for two inputs and two outputs corresponding to the two inputs. The access holes being aligned with the beam-splitter filter such that light inputted to the inputs are directed to corresponding outputs.
摘要:
The present invention is a three-dimensional tapered waveguide coupler capable of interconnecting electro-optical devices with differing optical mode profiles. The ends of the waveguide are configured to match the optical mode profiles of the electro-optical devices that the waveguide interconnects. The waveguide adiabatically transmits the fundamental mode of the photo-optic signal from the electro-optical device at the waveguide's input end to a different electro-optical device at the waveguide's output end. A single coupler can be configured with one or more waveguides, each waveguide having different optical mode profiles at either end and different optical transmission characteristics.