Abstimmbarer, selbstpulsierender Zweisektionslaser zur optischen Taktfrequenzerzeugung und dessen Verwendung

DE 10118965 A UPAB: 20030204 NOVELTY - The device has two offset DFB sections coupled via one mode via a grid affecting the phase speed of the light wave and at least two tuning stages for fine tuning the clock frequency. Both DFB sections are operated as highly pumped active DFB lasers in a tandem configuration with different wavelengths with complex coupling by the additional effect of the grid. The frequency is coarsely tunable over a large frequency range by selecting the offset. DETAILED DESCRIPTION - The device has two optically coupled offset DFB sections coupled via one mode via a grid affecting the phase speed of the light wave, of which at least one is an active laser, and at least two tuning stages for fine tuning the clock frequency. Both DFB sections are operated as highly pumped active DFB lasers (DFB1,DFB2) in a tandem laser (TL) configuration with different wavelengths with complex coupling by the additional effect of the grid. The frequency is coarsely tunable over a large frequency range by selecting the offset. USE - For optical clock frequency generation, for use as a highly stable clock regenerator for an optical decision device in a 3R regenerator for pulse processing in a large optical network with ultrahigh bit rates (claimed). ADVANTAGE - Developed to enable optimal reproducible operating behavior in relation to defined conditions and especially for outstanding frequency stability