Back-to-back tapered waveguide cores align misaligned photonics regions to reduce insertion loss and back reflection.
Intermediate substrate separates signal lines from main substrate, reducing propagation loss and crosstalk while maintaining narrow width.
Tunable waveguide arms compensate for fabrication variations, ensuring stable athermal behavior in silicon photonics.
Elastic spacers segment into overlapping and non-overlapping regions to maintain uniform gap spacing between substrates.
Segmented femtosecond laser processing reduces transmission loss below 0.1 dB/cm by smoothing refractive index fluctuations during waveguide fabrication.
Curing a fluorine-containing polyarylene prepolymer creates a waveguide core that resists separation and cracking under thermal stress.
Segmented heaters maintain optimal temperatures for each optical component, reducing power consumption and fabrication complexity.
Multi-stage tapers and angled mirrors enable vertical coupling while suppressing back reflection in silicon photonics.
Heated phase shifting elements alter the slab waveguide refractive index to randomize light phase, reducing coherent noise without free space diffusers.
An optical mode converter uses an inclined mirror to reflect light signals into a substrate, eliminating complex tapered waveguide fabrication.
Localized heating elements adjust the refractive index of silicon waveguides for precise phase and amplitude control.
Opposite-sign core layers compensate refractive index shifts, eliminating active heaters and reducing power consumption.
A light emitting device uses two distributed Bragg reflector layers to control optical emission.
A curved mode coupler guides light between waveguides with different widths to enable efficient optical signal conversion.
Adiabatic bends in silicon photonics reduce propagation loss by varying width and curvature along the path.
Trimmed silicon nitride cascaded Mach-Zehnder interferometer filters achieve center wavelength accuracy without active tuning power consumption.
A glass-ceramic optical device forms a spatial refractive index gradient through in situ nanocrystal precipitation within a nucleated glass matrix.
Heaters on tapered optical fibers compensate for fabrication tolerances and temperature changes that cause red-shift and blue-shift errors.
Segmented conductive traces run over top surfaces of a peninsula and ridge, preventing light leakage and back-reflections during electrical contact.
Apertures in relay substrate ground electrodes trap electric field lines between signal electrodes, suppressing crosstalk without increasing device complexity.
Segmenting the low refractive index layer width along the propagation direction prevents peeling during size reduction while suppressing insertion loss.
A lithium niobate waveguide with a parallel metal body converts visible light polarization modes via surface plasmons.
Vertical stacking of waveguides reduces MIOC width while maintaining light wave reciprocity for miniaturized fiber-optic gyroscope applications.
Multimode waveguides convolve fundamental and higher-order mode fields to reduce loss variation while broadening transmission bandwidth.
Short-circuited conductive regions eliminate potential differences, preventing absorption saturation from electron-hole accumulation without external power.
Intrinsic optical absorption in the p-n junction generates photocurrent feedback to stabilize resonance against thermal fluctuations without external detectors.
Epitaxial growth of III-V regions on silicon eliminates specialized transition layers and Si(111) orientation requirements, reducing fabrication complexity.
Ge2Sb2Te5 antennas scatter optical modes to shift light phases, enabling programmable matrix-vector multiplication for photonic neural networks.