Abstract:
Embodiments herein describe a fiber array unit (FAU) configured to couple a photonic chip with a plurality of optical fibers. Epoxy can be used to bond the FAU to the photonic chip. However, curing the epoxy between the FAU and the photonic chip is difficult. As such, the FAU can include one or more optical windows etched into a non-transparent layer that overlap with epoxy wells in the photonic chip. Moreover, the FAU may include a transparent substrate on which the non-transparent layer is disposed that permits UV light to pass therethrough. As such, during curing, UV light can be pass through the transparent substrate and through the optical windows in the non-transparent layer to cure the epoxy disposed between the FAU and the photonic chip.
Abstract:
A method of creating a laser, comprising: bonding a III-V semiconductor material with a silicon substrate; removing excess III-V semiconductor material bonded with the substrate to leave a III-V semiconductor material base layer of a predetermined thickness bonded with the substrate; and after removing the excess III-V semiconductor material, epitaxially growing at least one layer on the III-V semiconductor material base layer, the at least one layer comprising a quantum dot layer.
Abstract:
An arrangement for improving adhesive attachment of micro-components in an assembly utilizes a plurality of parallel-disposed slots formed in the top surface of the substrate used to support the micro-components. The slots are used to control the flow and “shape” of an adhesive “dot” so as to quickly and accurately attach a micro-component to the surface of a substrate. The slots are formed (preferably, etched) in the surface of the substrate in a manner that lends itself to reproducible accuracy from one substrate to another. Other slots (“channels”) may be formed in conjunction with the bonding slots so that extraneous adhesive material will flow into these channels and not spread into unwanted areas.
Abstract:
An optical coupler may include a fiber optic structure that has a portion of an outer surface that extends in a longitudinal direction of the fiber optic structure. The longitudinal outer surface portion may be optically coupled with a waveguide core of an optical integrated circuit. The fiber optic structure may also include a second outer surface that extends transverse to the longitudinal direction of the fiber optic structure. The fiber optic structure may also include a third outer surface portion that is butt coupled to an end of an optical fiber to optically couple the third outer surface portion with the optical fiber.
Abstract:
An interposer (support substrate) for an opto-electronic assembly is formed to include a thermally-isolated region where temperature-sensitive devices (such as, for example, laser diodes) may be positioned and operate independent of temperature fluctuations in other areas of the assembly. The thermal isolation is achieved by forming a boundary of dielectric material through the thickness of the interposer, the periphery of the dielectric defining the boundary between the thermally isolated region and the remainder of the assembly. A thermo-electric cooler can be used in conjunction with the temperature-sensitive device(s) to stabilize the operation of these devices.