Tailoring the dynamics of multisection lasers for 40 Gb/s direct modulation
We demonstrate theoretically how a proper tailoring of the longitudinal structure of multisection semiconductor laser help to achieve the required device performance when modulating current with 40 Gbit/s PRBS signal. For this reason we simulate and analyze the longitudinal dynamics with the software package LDSL-tool.
Improvement of the direct modulation behavior of semiconductor lasers by using a holding beam
We show theoretically that the direct modulation properties of semiconductor lasers can be significantly improved by the injection of a so-called holding beam-a continuous-wave beam at the transparency wavelength of the gain medium. Both the small-signal and the large-signal behavior are investigated.
Handbook of environmental management and technology
Learn how to respond to the complex problems encountered in environmental management Highlighting all aspects of the spectrum of environmental control, this text provides a historical perspective on pollution problems and solutions, and offers an introduction to the specialized literature in this and related areas. It includes:* Introduction to the issues* Air pollution management issues* Water pollution management issues* Solid and radioactive waste management issues* Hazardous waste management issues* Pollution prevention* Additional environmental concerns and management considerations* New technologies and approaches* Risk-related topics* Recent developments* Appendices