Continuously tunable single-frequency laser diode utilising transverse tuning scheme

A new wavelength-tunable single-frequency lase diode has been developed using a tunable twin-guide structure. The applied transverse tuning scheme provides a basically continuous tuning behaviour with only a single wavelength control current. The first 400 mu m-long, lambda =1.56 mu m devices are tunable over a range of 1.5 nm and show the expected continuous tuning behaviour.