Photonic directional couplers leverage waveguide dispersion to tune spectral entanglement and photon time ordering.
A first insulating layer extends above adjacent electrodes to prevent foreign matter adhesion on optical waveguide devices.
Lateral web regions thermally couple heat sources to waveguides, reducing optical absorption losses while maintaining efficient resonator heating.
A depressed cladding waveguide structure confines optical signals within a composite electro-optical substrate to enable high-speed modulation.
Vertical output couplers use tilted mirrors to extract light from waveguides, enabling on-wafer testing without chip-level polishing.
A T-shaped arrayed waveguide grating uses asymmetric geometry to support a large free spectral range in a compact form factor.
Vertical stacking minimizes voltage drops while a metal cover reduces thermal resistance, maintaining optimal temperatures for reliable data transmission.
Gradual width and separation changes in an adiabatic waveguide coupler minimize back-reflections that limit resonator fiber optic gyroscope bias stability.
PECVD silicon dioxide cladding with refractive index below 1.3 mitigates porous film density issues, boosting light confinement.
Downwardly extending ground electrode portions confine electrical fields to reduce crosstalk and frequency losses in RF waveguide arrays.
Non-overlapping electrode placement prevents dielectric damage and short-circuits, improving optical waveguide reliability.
Optical coupling and branch part segments modulated light into monitoring and output waveguides to preserve signal intensity.
A signal layer generates spectral signals to control etching depth accuracy in silicon photonic platforms.
Vertical waveguides and mirrored facets reduce MZI footprint by half while eliminating waveguide crossings.
A monolithic waveguide-integrated photodiode merges the depleted drift layer with the waveguide core to enhance light coupling efficiency.
A silicon nitride polarization splitter rotator uses overlapping waveguides to rotate optical signals.
A light sensor uses a segmented wet etch process to polish the interface between crystalline media and absorption layers.
Ge and GaAs buffer layers in a substrate cavity enable epitaxial growth of III-V stacks on SOI, overcoming lattice mismatch for efficient light modulation.
Opposite-side stiffeners balance mechanical loads on a photonic integrated circuit, reducing laser channel stress gradients by over 80%.
Oxide claddings in a polarization rotator-splitter enable mode conversion while minimizing crosstalk and conversion loss.