摘要:
A silicon vertical cavity laser with in-plane coupling comprises wafer bonding an active III-V semiconductor material above a grating coupler made on a silicon-on-insulator (SOI) wafer. This bonding does not require any alignment, since all silicon processing can be done before bonding, and all III-V processing can be done after bonding. The grating coupler acts to couple the vertically emitted light from the hybrid vertical cavity into a silicon waveguide formed on an SOI wafer.
摘要:
Es wird ein Verfahren zur Herstellung einer Vielzahl von optoelektronischen Halbleiterchips mit vergrabener p-Seite, aufweisend die folgenden Verfahrensschritte angegeben: a) Herstellen eines Wafers (1, 2, 3) mit einer Halbleiterschichtenfolge (100, 200, 300), die eine n-dotierte Schicht (12, 22, 32), eine aktive Schicht (13, 23, 33) und eine p-dotierte Schicht (14, 24, 34) umfasst, wobei die aktive Schicht zwischen der n-dotierten Schicht und der p-dotierten Schicht angeordnet ist und die p-dotierte Schicht freigelegt ist, b) elektrisches Aktivieren der Akzeptoren in der freigelegten p-dotierten Schicht (14, 24, 34) durch ein thermisches Aktivierungsverfahren, c) Abdecken der p-dotierten Schicht (14, 24, 34), und d) Vereinzeln des Wafers (1, 2, 3) in eine Vielzahl von optoelektronischen Halbleiterchips.
摘要:
Methods for forming semiconductor devices include providing a textured template, forming a buffer layer over the textured template, forming a substrate layer over the buffer layer, removing the textured template, thereby exposing a surface of the buffer layer, and forming a semiconductor layer over the exposed surface of the buffer layer. In various embodiments, semiconductor structures include a substantially untextured substrate layer, a textured buffer layer disposed over the substrate layer, and a semiconductor layer disposed over the textured buffer layer.
摘要:
Various embodiments of the present invention are related to microresonator systems that can be used as a laser, a modulator, and a photodetector and to methods for fabricating the microresonator systems. In one embodiment, a microresonator system (100) comprises a substrate (106) having a top surface layer (104), at least one waveguide (114,116) embedded within the substrate (106), and a microdisk (102) having a top layer (118), an intermediate layer (122), a bottom layer (120), current isolation region (128), and a peripheral annular region (124,126). The bottom layer (120) of the microdisk (102) is in electrical communication with the top surface layer (104) of the substrate (106) and is positioned so that at least a portion of the peripheral annular region (124,126) is located above the at least one waveguide (114,116). The current isolation region (128) is configured to occupy at least a portion of a central region of the microdisk and has a relatively lower refractive index and relatively larger bandgap than the peripheral annular region.
摘要:
A laser, useful as part of a multiple wavelength optical fiber transmitter, includes a single mode, multiple quantum well semiconductor amplifying mirror as a gain element an includes a second mirror to form an optical cavity, the length of which defines a sequence of optical modes. The gain element has an arrangement for tuning the laser from one mode to another by altering a temperature of the amplifying mirror.
摘要:
A method for making optoelectronic devices with interdigitated arrays of photonic devices is disclosed wherein an array of first type photonic devices (22) and sacrificial devices (24) are hybridized to a driver circuitry substrate, the sacrificial devices (24) are removed and an array of second type photonic devices (92) is hybridized into the space left by removal of the sacrificial devices (24).
摘要:
A laser, useful as part of a multiple wavelength optical fiber transmitter, includes a single mode, multiple quantum well semiconductor amplifying mirror as a gain element an includes a second mirror to form an optical cavity, the length of which defines a sequence of optical modes. The gain element has an arrangement for tuning the laser from one mode to another by altering a temperature of the amplifying mirror.
摘要:
A system and method are disclosed for shielding EMI in an electronic device such as a depth sensor used in a head mounted display device. In embodiments, the shield has a dual construction including a fence that may be surface mounted to a substrate over a first set of surface mounted components. The EMI shield may further comprise a cover, which may be glued to the fence after a second set of components is mounted to the substrate.