Overlapping metallization layers separated by dielectric enable tighter emitter row spacing while keeping wider traces to lower resistance.
A rotationally asymmetric first collimator lens collimates both fast and slow axes, simplifying wavelength-combining laser optics while preserving beam quality.
Heavy n-doping with halide substitution and surface protection suppresses p-doping in quantum dot solids, enabling low-threshold infrared ASE.
Direct optical excitation and inhibition replace O/E/O triggering in a hybrid silicon III-V pulsed laser, improving bandwidth and pulse control.
Surface gratings and an optical isolator enable passive laser-to-silicon photonics coupling with wider alignment tolerance and lower packaging cost.
An optical bandpass filter and photodetector replace alignment-sensitive interferometers to keep injection-locked lasers stable during frequency scans.
Optical pulse triggering through lateral waveguides removes O/E/O losses and photodiodes in III-V-on-silicon pulsed laser neurons.
Integrated etalons and on-chip heating keep an ultra-small tunable laser thermally stable while suppressing Brillouin scattering.
Self-mode-locked quantum dot coherent comb lasers replace external comb sources to deliver stable optical tones with lower network complexity and cost.
Independent SOA electrodes enable pre-mount inspection of a U-shaped optical amplifier chip, easing fiber coupling and improving measurement accuracy.