Time-varying DC and AC drive levels offset burst-heating in an electro-absorption modulator to keep extinction ratio and optical output stable.
Selective activation of laser diode banks enables wide power tuning without attenuators, reducing energy loss and preserving diode efficiency.
A solid-state etalon and interferometric shift tracking enable absolute wavelength calibration in widely tunable lasers without external instruments.
Multiple optical amplifiers and micro-ring vernier filtering extend tunable laser wavelength range beyond single-chip gain limits.
Integrated transistors and nanostructure emitters on one substrate improve current control, suppress leakage, and reduce dislocation risk.
A phase-shifting reflector replaces costly half-wave plates to rotate polarization for compact 2D acousto-optic laser scanning.
Visible thin-disc laser light is frequency-doubled in a non-linear crystal to deliver temporally stable, high-intensity UV output.