Abstract:
A composite device for splitting photonic functionality across two or more materials comprises a platform, a chip, and a bond securing the chip to the platform. The platform comprises a base layer and a device layer. The device layer comprises silicon and has an opening exposing a portion of the base layer. The chip, a III-V material, comprises an active region (e.g., gain medium for a laser). The chip is bonded to the portion of the base layer exposed by the opening such that the active region of the chip is aligned with the device layer of the platform. A coating hermitically seals the chip in the platform.
Abstract:
A method of fabricating a composite integrated optical device includes providing a substrate comprising a silicon layer, forming a waveguide in the silicon layer, and forming a layer comprising a metal material coupled to the silicon layer. The method also includes providing an optical detector, forming a metal-assisted bond between the metal material and a first portion of the optical detector, forming a direct semiconductor-semiconductor bond between the waveguide, and a second portion of the optical detector.
Abstract:
A composite device for splitting photonic functionality across two or more materials comprises a platform, a chip, and a bond securing the chip to the platform. The platform comprises a base layer and a device layer. The device layer comprises silicon and has an opening exposing a portion of the base layer. The chip, a III-V material, comprises an active region (e.g., gain medium for a laser). The chip is bonded to the portion of the base layer exposed by the opening such that the active region of the chip is aligned with the device layer of the platform. A coating hermitically seals the chip in the platform.
Abstract:
A method of fabricating a composite semiconductor structure includes providing a substrate including a plurality of devices and providing a compound semiconductor substrate including a plurality of photonic devices. The method also includes dicing the compound semiconductor substrate to provide a plurality of photonic dies. Each die includes one or more of the plurality of photonics devices. The method further includes providing an assembly substrate, mounting the plurality of photonic dies on predetermined portions of the assembly substrate, aligning the substrate and the assembly substrate, joining the substrate and the assembly substrate to form a composite substrate structure, and removing at least a portion of the assembly substrate from the composite substrate structure.
Abstract:
A method of fabricating a composite semiconductor structure includes providing a substrate including a plurality of devices and providing a compound semiconductor substrate including a plurality of photonic devices. The method also includes dicing the compound semiconductor substrate to provide a plurality of photonic dies. Each die includes one or more of the plurality of photonics devices. The method further includes providing an assembly substrate, mounting the plurality of photonic dies on predetermined portions of the assembly substrate, aligning the substrate and the assembly substrate, joining the substrate and the assembly substrate to form a composite substrate structure, and removing at least a portion of the assembly substrate from the composite substrate structure.
Abstract:
A method of operating a BPSK modulator includes receiving an RF signal at the BPSK modulator and splitting the RF signal into a first portion and a second portion that is inverted with respect to the first portion. The method also includes receiving the first portion at a first arm of the BPSK modulator, receiving the second portion at a second arm of the BPSK modulator, applying a first tone to the first arm of the BPSK modulator, and applying a second tone to the second arm of the BPSK modulator. The method further includes measuring a power associated with an output of the BPSK modulator and adjusting a phase applied to at least one of the first arm of the BPSK modulator or the second arm of the BPSK modulator in response to the measured power.
Abstract:
A semiconductor laser device is provided. The semiconductor laser device includes: a substrate having a first facet; a guiding layer having a second facet through which an output light is configured to be emitted; a bottom dielectric layer between the substrate and the guiding layer, and a top dielectric layer on the guiding layer. The second facet is at an angle relative to the first facet.
Abstract:
A composite device for splitting photonic functionality across two or more materials comprises a platform, a chip, and a bond securing the chip to the platform. The platform comprises a base layer and a device layer. The device layer comprises silicon and has an opening exposing a portion of the base layer. The chip, a material, comprises an active region (e.g., gain medium for a laser). The chip is bonded to the portion of the base layer exposed by the opening, such that the active region of the chip is aligned with the device layer of the platform.
Abstract:
A photonic die includes an optical component that can emit output light. The optical component includes a substrate having a length and width that are substantially greater than a thickness thereof, the thickness defining a vertical direction. The optical component includes a vertical edge, and a reflective or antireflective coating on the vertical edge, wherein the reflective or antireflective coating includes a silicon-based material.
Abstract:
A polarization-independent, optical circulator is formed in silicon photonics. The polarization-independent, optical circulator uses an optical splitter having two couplers and two waveguides joining the two couplers. One of the two waveguides is thinner than the other to create a large effective index difference between TE and TM modes transmitted through the one waveguide. Polarization rotators, including reciprocal and/or non-reciprocal rotators, are further used to create the optical circulator.