In this paper, we present an ytterbium-fiber laser system with a cladding-pumped single-mode active fiber achieving mode-locking by nonlinear polarisation rotation. It consists of the following principal modules: A double-clad ytterbium fiber, quarter-(QWP) and half-wave-plates (HWP) for polarization control, an optical isolator for unidirectional laser operation and a dispersive delay line with t...Show More
We report the development of a current-controlled widely tunable laser diode based on InP with photonic crystal mirrors and an integrated amplifier section for stabilized power output. The laser consists of three longitudinally coupled ridge waveguide cavities that are coupled through photonic crystal mirror segments. A laterally defined binary superimposed grating provides complex-coupled distrib...Show More
We report the development of a tunable laser diode array monolithically integrated with a Y-coupler structure based on photonic crystals. The laser diodes consist of two longitudinally coupled photonic crystal waveguide segments that are separated by a photonic crystal mirror section. Quasicontinuous tuning is achieved in a 30.6-nm window with 100-GHz channel spacing as typically required by wavel...Show More
