A separated heater, heat transfer member, and thermal preservation layer enable uniform optical coupler heating with lower power loss.
A layered tapered and rib waveguide combines mode matching and higher-order transformation to cut optical loss, reflection, and device size.
Selective trimming banks calibrate tunable photonic devices to offset fabrication tolerances and keep optical phase response near target.
A larger-section DC waveguide and patterned RF/DC layout suppress direct current drift, stabilize light output, and extend modulator life.
Optical and thermal isolation structures help monolithic photonic circuits block stray light and contain heat around cryogenic photodetectors.
Monolithic integration of photonic and electric circuits cuts laser insertion loss, preserves SNR, and improves distance measurement accuracy.
A feedback loop and mode conversion let a ring resonator modulator counter wavelength drift and raise extinction ratio with lower loss.
Selective placement of a Ce:YIG non-reciprocal member controls TM-mode isolation while limiting waveguide loss and energy leakage.
Non-linear multi-stage tapers improve field confinement during mode transformation, cutting insertion loss and flattening frequency response.
A ridge and patterned cladding align silicon and SiO2 mode fields to cut coupling loss between compact waveguides and SMF-scale optics.
Dual heavy-ion irradiation forms gradient optical barriers that improve waveguide end coupling and frequency conversion while reducing light loss.
A reflector, low-index separation layer, and grating array boost LiDAR light emission efficiency, extending range while cutting power waste.
A curved multilayer absorber surrounds the waveguide end to attenuate stray light, cut PIC noise, and keep back reflection low.
Stacked optical coupler layers with tuned refractive indices broaden wavelength coupling, supporting high-bandwidth photonics with lower process complexity.
A cured planarization coating replicates a forming surface to correct waveguide topography and reduce image artifacts from light path deviations.
Charge injection lets organic solid crystals actively tune refractive index in PICs while adding flexibility for nonplanar surfaces.
Controlled RMS roughness in a lithium niobate waveguide eases protective-layer stress, cutting light loss and suppressing micro-cracks.
Mode converters couple orthogonal transverse modes into supermodes to tune resonant wavelengths, free spectral range, and quality factor.
Low-temperature sputtering forms niobium oxide photonic layers with controlled refractive index while protecting existing layers in 3D PIC stacks.
A waveguide photodetector places photoelectric material at a PN junction to raise optical chip density while converting optical signals on-chip.
Vertically stacked waveguide layers enable optical power exchange across photonic layers, boosting PNN density while cutting chip size and cost.
Controlled Ag ion exchange shapes core thickness and refractive index gradient for homogeneous, low-loss single-mode waveguides.
Varying slab depths and tapering suppress TM mode and convert it to TE mode, improving silicon photonic signal transmission efficiency.
Low-temperature sputtering forms niobium-based photonic layers with controlled refractive index, reducing layer damage and optical loss in 3D PICs.
Region-specific SOI thinning lets EIC and PIC structures share one chip, cutting transmission loss, signal delay, and fabrication overhead.
Waveguides with mixed-sensitivity sections equalize phase-shift drift, stabilizing AWG spectral response across temperature, stress, and thickness changes.
Vertically stacked drive electrodes strengthen the electric field in a thin-film LiNbO3 waveguide, improving modulation efficiency in a compact layout.
On-chip filters, air gaps, and scatter mitigation cut waveguide crosstalk and stray light for more reliable quantum memory addressing.
Asymmetric MZI chains and pump rejection filters remove broadband and sideband noise while passing desired single photons in photonic circuits.
Differential electrode pairs around lithium niobate waveguides cut optical and electrode losses while enabling low-voltage, wide-bandwidth modulation.