Si Optical Bench for Tunable WDM Laser Diode

Si Optical Bench for Tunable WDM Laser Diode

US Patent 6,650,916

Silicon optical bench for tunable laser for WDM laser applications which includes laser die, etched v groove for ball lens output collimator, rear facet collimator, etalon with phase step and 2 photodetectors.

By  incorporating KOH etched Si V groove trenches to reduce interference in etalon wavelength locker signal from light reflected off the surface of the chip carrier which degrades the 2 phase shifted wavelength sensitive signals through the stepped etalon.