Patent ID: 7424041

Claim:
A method of manufacturing a tuneable laser assembly, the assembly including: a substrate having formed thereon a plurality of tuneable lasers including Multi Quantum Well (MQW) active sections as well as distributed Bragg reflector (DBR) tuning sections, said lasers having respective emission wavelengths and tuning ranges such that said laser assembly can be tuned over a quasi-continuous predetermined wavelength range, a plurality of passive waveguides coupled to said lasers to receive therefrom said respective emission wavelengths, an optical coupler coupled to said waveguides to receive via said waveguides said emissions wavelengths from said lasers, and an optical amplifier having a Multi Quantum Well (MQW) active section, said amplifier coupled to said optical coupler to amplify said emission wavelengths coupled via said optical coupler, wherein the method includes the steps of: using the same Multi-Quantum Well (MQW) material for the active sections of said tuneable lasers and said optical amplifier, and using the same bulk material for said passive waveguides, said optical coupler and said DBR tuning sections of said lasers.