Multi-wavelength gain-coupled distributed feedback laser array with fine tunability

摘要

A multi-wavelength laser array having a plurality of gain- coupled distributed feedback ridge waveguide lasers. The operational wavelength of each laser is established by selecting a width of the ridge waveguide in the range 1.6 &mgr;m to 5.2 &mgr;m. Fine tuning of each central wavelength is achieved by thermal power to selected waveguides via Titanium thin film resistors integrated into the laser array. A wavelength range of 9 nm is demonstrated utilizing a sixteen element array.