External Cavity Lasers Composed of Higher Order Gratings and SLDs Integrated on PLC Platform

To construct a cost-effective and multi-channel Wavelength Division Multiplexed Passive Optical Network (WDM-PON) system, low-cost wavelength-stabilized light sources are required. External Cavity Lasers (ECLs) are promising and have been extensively studied. The hybrid integrated form of ECL composed of a UV-written silica waveguide grating and a Spot-Size Converter integrated Laser Diode (SSC-LD) mounted on a Planar Lightwave Circuit (PLC) platform was proposed. Recently, PLC-based ECLs have been reported to exhibit better mechanical and thermal stability than ECLs with fiber Bragg gratings.