supported by the National High Technology Research and Development Programof China(No.2006AA03Z427);the State Key Development Programfor Basic Research of China(No.2003CB314903);the National Natural Science Foundation of China(No.60677024)~~
We demonstrate a ridge waveguide sampled-grating distributed-feedback laser with quasi-continuous wavelength coverage over a 35nm range. The design is based on a 320nm-thick butt jointed passive waveguide optimized fo...