Abstract: Techniques and mechanisms to mitigate corrosion to via structures of a composite chiplet. In an embodiment, a composite chiplet comprises multiple integrated circuit (IC) components which are each in a different respective one of multiple levels. One or more conductive vias extend through an insulator layer in a first level of the multiple levels. An annular structure of the composite chiplet extends vertically through the insulator layer, and surrounds the one or more conductive vias in the insulator layer. The annular structure mitigates an exposure of the one or more conductive vias to moisture which is in a region of the insulator layer that is not surrounded by the annular structure. In another embodiment, the annular structure further surrounds an IC component which extends in the insulator layer.

Abstract: A device includes a magnetically attachable fiber array unit (FAU) for coupling optical fibers to a photonic integrated circuit (PIC). The device uses magnetic retention to secure the FAU to a substrate, where the FAU includes a fiber that is optically coupled to a waveguide of the PIC. Conventional fiber array units use mechanical retention means such as latches, clips, spring-loaded ball bearings, or friction fits to achieve pluggability. These mechanical parts can experience wear and tear from repeated insertions and removals. The magnetically attachable fiber coupler provides an alternative to conventional mechanical retention approaches by using magnetic retention for a pluggable FAU that attaches to a package including a PIC. By replacing mechanical retention means with magnetic retention, the magnetically attachable fiber coupler may reduce susceptibility to wear from repeated connection and disconnection cycles.

Abstract: A photonic device includes a photonic integrated circuit (PIC) comprising a plurality of waveguides, an optical coupler array positioned near an edge of the PIC, and a plurality of optical fibers. The optical coupler array comprises a plurality of optical couplers. Each optical coupler of the optical coupler array defines an optical path coupling a respective waveguide of the plurality of waveguides to a respective optical fiber of the plurality of optical fibers. At least two optical couplers of the plurality of optical couplers are offset relative to each other, either in a first direction perpendicular to the waveguide plane or a second direction perpendicular to the edge of the PIC, or both.

Abstract: A photonic device includes a package comprising a partial interposer and an electronic-photonic assembly disposed thereon. The assembly comprises a photonic integrated circuit (PIC) having first and second sides, wherein the first side is attached to the partial interposer, and wherein the PIC comprises a waveguide defining a waveguide plane. The assembly further comprises an electronic integrated circuit (EIC) attached to the second side of the PIC and an encapsulant at least partially surrounding the EIC. The device includes an optical coupler attached to the PIC, configured to collimate light emitted by the PIC in a direction angled relative to the waveguide plane. The device includes an optical assembly comprising a detachable plug and fiber, positioned to receive the collimated light from the optical coupler.

Abstract: Described herein are photonic devices and methods of manufacturing the same. The photonic devices include a photonic integrated circuit (PIC) disposed on a substrate and a socket configured to receive a pluggable optical coupler to couple the PIC to one or more optical fibers. Manufacturing the photonic devices may include removing a portion of the PIC to expose through-silicon-vias (TSVs) of the PIC, coupling electronic integrated circuits (EIC) to the PIC, and forming a mold around portions of the EICs. The architecture of the photonic devices enables pluggable fiber array units in multi-die configurations while maintaining low optical loss through wafer-level assembly.

Abstract: Embodiments disclosed herein include die modules and methods of making die modules. In an embodiment, a die module comprises a first die with a set of first pads with surfaces that are substantially coplanar with a surface of a first dielectric layer. In an embodiment, the die module further comprises a second die with a set of second pads with surfaces that are substantially coplanar with a surface of a second dielectric layer. In an embodiment the first pads are bonded to the second pads and the first dielectric layer is bonded to the second dielectric layer.

Abstract: Bonding pedestals on substrates, and their manufacture, for direct bonding integrated circuit (IC) dies onto substrates. The electrical interconnections of one or more IC dies and a substrate are bonded together with the IC dies on and overhanging the pedestals. A bonding pedestal may be formed by etching down the substrate around the interconnections. A system may include one or more such pedestals above and adjacent a recessed surface on a substrate with IC dies overhanging the pedestals. Such a system may be coupled to a host component, such as a board, and a power supply via the host component.

Abstract: Microelectronic devices, assemblies, and systems include a multichip composite device having one or more integrated circuit dies bonded to a base die and an inorganic dielectric material adjacent the integrated circuit dies and over the base die. The multichip composite device includes a dummy die, dummy vias, or integrated fluidic cooling channels laterally adjacent the integrated circuit dies to conduct heat from the base die.

Abstract: Embodiments herein relate to systems, apparatuses, or processes for attaching dummy dies to a wafer that includes a plurality of active dies, where the dummy dies are placed along or in dicing streets where the wafer is to be cut during singulation. In embodiments, the dummy dies may be attached to the wafer using a die attach film, or may be attached using hybrid bonding. Other embodiments may be described and/or claimed.

Abstract: Described herein are systems and techniques for providing photonic devices having efficient optical coupling between waveguides and optical fibers. The photonic devices comprise an edge coupler disposed within a cavity of a photonic integrated circuit (PIC) and a pluggable assembly removably coupled with the edge coupler. The PIC includes a spot size converter optically coupled to a waveguide to expand light received from the waveguide prior to exiting the PIC.

Abstract: Various devices, systems, and/or methods perform wireless chip to chip high speed data transmission. Strategies for such transmission include use of improved microbump antennas, wireless chip to chip interconnects, precoding and decoding strategies, channel design to achieve spatial multiplexing gain in line of sight transmissions, open cavity chip design for improved transmission, and/or mixed signal channel equalization.

Abstract: Embodiments disclosed herein include optoelectronic systems and methods of forming such systems. In an embodiment, an optoelectronic system comprises a first substrate, a second substrate over the first substrate, and a micro-ring resonator (MRR) over the second substrate. In an embodiment, a heater is integrated into the MRR, a cladding is over the MRR, and an opening is through the first substrate and the second substrate to expose a bottom surface of the MRR.

Abstract: A device may include an electronic-photonic assembly comprising: a photonic integrated circuit (PIC) comprising a waveguide extending near a sidewall of the PIC, an electronic integrated circuit (EIC) attached to the PIC; and an encapsulant at least partially encapsulating the EIC. A device may include an optical assembly comprising a detachable plug and a fiber attached to the detachable plug. A device may include an optical coupler between the sidewall of the PIC and the optical assembly, wherein the optical coupler is configured to couple light received from the waveguide to the fiber.

Abstract: A device may include an electronic-photonic assembly comprising: a photonic integrated circuit (PIC) comprising a waveguide defining a waveguide plane, an electronic integrated circuit (EIC) attached to the PIC; and an encapsulant at least partially encapsulating the EIC. A device may include an optical coupler attached to the PIC, wherein the optical coupler is configured to collimate, in a first direction that is angled relative to the waveguide plane, light emitted by the PIC upon being guided by the waveguide. A device may include an optical assembly comprising a detachable plug and a fiber attached to the detachable plug, wherein the optical assembly is positioned to receive the collimated light from the optical coupler.

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed includes an integrated circuit (IC) package including a first die including a first surface and a second surface opposite the first surface, the first surface defined by a bulk semiconductor region of the first die, a second die including a third surface and a fourth surface opposite the third surface, the third surface defined by a bulk semiconductor region of the second die, the fourth surface facing towards the second surface, a first bonding layer between the second and fourth surfaces, the first bonding layer including first metal vias disposed therein, and a second bonding layer between the second and fourth surfaces, the second bonding layer including second metal vias disposed therein, the first bonding layer in direct contact with the second bonding layer, ones of the first metal vias in direct contact with ones of the second metal vias to electrically couple the first die to the second die.

Abstract: Described herein are techniques for light extraction in hybrid-bonded photonics packages, in which application-specific integrated circuits (ASICs) are attached to a photonic integrated circuit (PIC) via hybrid-bonding. The techniques developed by the inventors involve extraction of light from the backside of the PIC, as opposed to the top side or the edge of the PIC as in conventional devices. A photonic device comprises a substrate, a PIC, an ASIC and an optical assembly. The PIC is disposed on the substrate and has a first surface and a second surface. The first surface faces the substrate. The ASIC is hybrid-bonded to the second surface of the PIC. The optical assembly comprises a fiber array unit and an optical fiber. The optical assembly is disposed in an opening formed in the substrate and the optical assembly is configured to receive light through the first surface of the PIC.

Abstract: Described herein are systems and techniques for providing photonic devices having glass substrates for use in an optical interconnect system. The photonic devices comprise a glass substrate and one or more optoelectronic assemblies coupled through openings of the glass substrate. Waveguides of the optoelectronic assemblies may be optically coupled with waveguides of the glass substrate forming an optical network through the glass substrate. The assembly waveguides may be optically coupled to the glass waveguides through pluggable optical couplers, evanescent coupling, and/or edge coupling.

Abstract: Described herein are packaged photonic devices configured to mitigate the negative effects of package warpage using piezoelectric transducers. As the package deforms due to mismatches in the coefficient of thermal expansion (CTE) among its components, the piezoelectric transducers are actuated to bend and conform to the resulting curvature of the photonic integrated circuit (PIC). By adapting their shape to the warped surface, the piezoelectric transducers restore and maintain proper optical alignment, thereby ensuring efficient fiber-to-PIC coupling despite the presence of package warpage. In one example, a photonic device comprises a PIC, an optical assembly attached to the PIC and comprising a fiber array unit (FAU) and a fiber array attached to the FAU, and a piezoelectric transducer attached to the FAU.

Abstract: Described herein are fiber-connection structures for photonic integrated circuits (PICs). These fiber connection structures enable efficient optical coupling between integrated waveguides and corresponding optical fibers by facilitating reliable edge coupling. The fiber-connection designs developed by the inventor improve upon conventional approaches by increasing fan-out fiber capability, coupling efficiency and scalability. A photonic package comprises a substrate, a PIC, an application-specific integrated circuit (ASIC) and a glass coupler. The PIC is attached to the substrate and comprises a PIC waveguide having an end adjacent an edge of the PIC. The ASIC is attached to the PIC. The glass coupler is attached to the PIC and comprises a glass waveguide optically coupled to the PIC waveguide.

Abstract: Described herein are glass substrates that include a cavity and glass fingers extending into the cavity. A photonic integrated circuit (PIC) is positioned near the cavity such that a waveguide of the PIC is optically coupled to a waveguide of the glass substrate formed in one of the glass fingers. The structure described herein allows for improved coupling efficiency between the PIC and the glass substrate, and improved access for underfill and outgassing processes. This approach facilitates reliable packaging of large or multi-reticle PICs while maintaining high optical and mechanical performance.