Abstract:
A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
Abstract:
A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
Abstract:
A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
Abstract:
Embodiments are provided for a waveguide polarizer comprising a series of bends. The waveguide polarizer is suitable for used in optical waveguide devices or circuits, where a polarized light is required, such as for single polarization output. The polarizer design is independent of the function of the optical devices. In an embodiment, an optical polarizer comprises an optical waveguide configured to propagate light at a designated polarization mode, and comprising a bend in a same plane of the propagated light. The bend has a geometry configured to contain in the optical waveguide the designated polarization mode of the propagated light and radiate outside the optical waveguide a second polarization mode of the propagated light.
Abstract:
A photonic platform based polarization controller providing a fixed target polarization is disclosed. The polarization controller has a polarization rotator splitter splitting the beam into first and second feeds corresponding to first and second orthogonal polarization components. A first Mach-Zehnder interferometer (MZI) stage provides a first phase delay between the first and second feeds based on a first control signal, and a first mixer mixes the first and second feeds to provide third and fourth feeds. A second MZI stage provides a second phase delay between the third and fourth feeds based on a second control signal, and a second mixer mixes the third and fourth feeds to provide fifth and sixth feeds. A third MZI stage provides a third phase delay between the fifth and sixth feeds based on a third control signal, and a third mixer mixes the fifth and sixth feeds to provide the fixed target polarization. An optical tap splits a portion of the beam.
Abstract:
Embodiments are provided for a waveguide polarizer comprising a series of bends. The waveguide polarizer is suitable for used in optical waveguide devices or circuits, where a polarized light is required, such as for single polarization output. The polarizer design is independent of the function of the optical devices. In an embodiment, an optical polarizer comprises an optical waveguide configured to propagate light at a designated polarization mode, and comprising a bend in a same plane of the propagated light. The bend has a geometry configured to contain in the optical waveguide the designated polarization mode of the propagated light and radiate outside the optical waveguide a second polarization mode of the propagated light.
Abstract:
Embodiments are provided for an optical coupler created by bonded photonic chip coupler for Silicon-on-Insulator (SOI) chip-fiber coupling. System and apparatus embodiments for a bonded photonic chip coupler for SOI chip-fiber coupling provide for reduced mismatch between fiber and chip, increased coupling efficiency, and lower photonics device insertion loss. In an embodiment, an optical coupler for coupling a photonics chip to an optical fiber includes a photonic chip comprising a nano-sized photonic waveguide, photonic optical diffraction surface grating, and a first cladding covering the photonic waveguide and the photonic grating; and an optical coupling chip comprising a micron-sized coupling waveguide and a coupling optical diffraction surface grating embedded in a first coupling cladding and on a second coupling cladding, wherein the first coupling cladding is connected to the first cladding, wherein the optical coupling chip is configured to couple to light transmitted between the photonic chip and an optical fiber.
Abstract:
Monitoring output power levels of a carrier-effect based switching cell allows phase errors resulting from driving a PIN or PN junction of the switching cell to be dynamically compensated for. The compensation may also allow for compensating of phase errors resulting from the phase imbalance of input couplers as well as phase errors from the waveguide due to fabrication variations. By dynamically compensating for phase errors caused by the driving of the PIN or PN junction, the extinction ratio of the carrier-effect based switching cell can be increased.
Abstract:
A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
Abstract:
Embodiments are provided for an optical coupler created by bonded photonic chip coupler for Silicon-on-Insulator (SOI) chip-fiber coupling. System and apparatus embodiments for a bonded photonic chip coupler for SOI chip-fiber coupling provide for reduced mismatch between fiber and chip, increased coupling efficiency, and lower photonics device insertion loss. In an embodiment, an optical coupler for coupling a photonics chip to an optical fiber includes a photonic chip comprising a nano-sized photonic waveguide, photonic optical diffraction surface grating, and a first cladding covering the photonic waveguide and the photonic grating; and an optical coupling chip comprising a micron-sized coupling waveguide and a coupling optical diffraction surface grating embedded in a first coupling cladding and on a second coupling cladding, wherein the first coupling cladding is connected to the first cladding, wherein the optical coupling chip is configured to couple to light transmitted between the photonic chip and an optical fiber.