Planar optical waveguides use temperature control to create density variations and arbitrary refractive index profiles during curing.
A tapered optical attenuator uses a dopant concentration gradient to absorb light within a semiconductor waveguide structure.
A mode converter uses a slab layer to modify electric field distributions for efficient light propagation.
A single crystalline semiconductor substrate guides optical signals through passive and active elements with distinct crystal orientations.
Cascaded waveguides and phase shifters perform unitary matrix computations, solving the bottleneck of large feature sizes that prevent scaling to many ports.
Row-wise heating circuits in an optical transceiver steer beams by applying uniform phase shifts across nanoantenna rows, resolving pitch limitations.
Segmenting nonlinear crystals from patterned cladding reduces fabrication complexity while maintaining high conversion efficiency for mid-infrared spectroscopy.
A waveguide optically pre-amplified detector integrates a passband filter to suppress amplified spontaneous emission noise within the signal path.
A metallic temperature sensor measures micro-ring resonator heat directly, bypassing oxide cladding barriers that cause inaccurate readings.
Segmented upper and lower tapered waveguides reduce insertion loss by relaxing fabrication constraints on tip width.
A cladding layer acts as an adhesive to fix the optical semiconductor element to the substrate.
Alternating oxidation and etching cycles reduce surface roughness below 1 nm, lowering scattering losses in semiconductor waveguides.
A resin optical waveguide with a tapered core structure guides light propagation through varying widths.
A hybrid SiPh-PLC optical transceiver couples light via a Bragg grating and turning mirror, relaxing alignment tolerance while maintaining high-speed detection.
Offset dual ring resonators confine light and reduce insertion loss, resolving the trade-off between mode conversion capability and energy dissipation.
An asymmetric waveguide grating router removes the central section to reduce size and loss while maintaining diffraction order.
Segmented germanium and silicon regions manage electric fields to prevent strong impact ionization in germanium, preserving speed and gain-bandwidth product.
Mechanical radial compression replaces expensive UV writing equipment, lowering manufacturing costs while maintaining high yield.
A transmission-type meta surface steers incident beams using independently controlled nanostructure rows.
An enlarged multilayer nitride waveguide uses a lower-index cladding to reshape optical modes within an inter-level dielectric.
Offset waveguide structure redistributes optical power between fundamental and high-order modes to reduce polarization dependent loss.
A semiconductor optical modulator structure fixes barrier layer potential using a localized p-type region to suppress signal leakage.
Subwavelength grating structure overlaps silicon and nitride waveguide sections to reduce crosstalk noise while maintaining compact device size.
Pivotable mirrors adjust folded optical paths to compensate for thermal shifts, enabling compact planar lightwave circuits with stable multiplexing performance.
Non-linear device arrangement passively compensates for temperature-induced spectral shifts, eliminating active tuning and reducing power consumption.
A crystallized glass substrate with matched thermal expansion stabilizes optical element alignment across temperature variations.
A semiconductor optical waveguide structure incorporates a sealed cavity between dielectric layers to enhance light transmission efficiency.
Non-linear curved waveguide arms reduce insertion loss and cross-talk by minimizing impedance changes at interfaces, enabling dense photonics integration.
Through-absorber quantum-well-intermixing blue-shifts the band edge, eliminating optical loss in the waveguide core while maintaining high detection efficiency.
Adjustable slab waveguide thicknesses reduce birefringence, minimizing wavelength shifts and channel cross-talk in WDM demux devices.
Segmented waveguides with varying refractive indices reduce device length and coupling loss for high-density photonic integrated circuits.
A robust conjugate symmetric optical apparatus achieves high quality factor and nearly complete transmittance through topological edge states.
Segmented waveguides in stacked cladding layers maintain mode matching, reducing optical coupling loss while accommodating fabrication dimensional variations.
A III-V semiconductor nanoridge waveguide structure positions the upper electrical contact on the side wall of a freestanding wider body portion.
Optical bridge sensors analyze calibration patterns to detect waveguide deformation, compensating for thermal and drop-induced misalignment.
A radiation imaging apparatus uses a dose detection sensor to perform preliminary X-ray exposure for automatic exposure control.
Lateral heater placement at least 2 micrometers from the ridge resolves temperature gradient contradictions in electro-absorption modulators.
Photonic integrated circuit Mach-Zehnder interferometers measure wavelength and side-mode suppression ratio simultaneously.
Orthogonal optical waveguide arrays reduce stray light ghosting in large-aperture lenses by separating imaging paths from interference.
A compensation structure applies stress to integrated waveguides to counteract thermo-optic refractive index changes.
Multi-layer ferroelectric waveguides enable microwave and optical crossings compatible with packaging while maintaining low half-wave voltage.
A vertical gap between angled waveguide cores reduces insertion loss and cross-talk from light scattering.
Curved waveguide arms paired with vertically graded differential signal conductors reduce propagation delay mismatch in photonic modulators.
Segmenting the device into distinct TFLN and SiPh parts bridges impedance mismatches to improve coupling efficiency while reducing DC drift.
A polymeric multimode interference coupler transfers optical modes between silicon waveguides and III-V devices.
A two-stage lattice circuit shapes transmission characteristics through precise optical path length differences.
Side-confining elements with curved surfaces reduce back reflection and insertion loss while improving manufacturing tolerance for fabrication variations.
A two-dimensional optical phased array uses row and column phase shifters to steer laser beams.
Deuterated silicon oxide cladding layers reduce propagation loss in optical waveguides while maintaining heat resistance during plasma CVD deposition.
A multilayer heater element combines titanium tungsten and gold layers to reduce sheet resistance in silicon photonic circuits.