TY - CHAP A1 - Schreiner, Rupert A1 - Mulot, M. A1 - Wiedmann, Jörg A1 - Coenning, W. A1 - Porsche, J. A1 - Gentner, Jean-Louis A1 - Berroth, Manfred A1 - Scholz, Ferdinand A1 - Schwizer, H. T1 - Dynamic measurements on narrow linewidth complex coupled 1.55 μm DFB lasers with gain and index grating in antiphase T2 - Conference Proceedings. Eleventh International Conference on Indium Phosphide and Related Materials (IPRM'99), 16-20 May 1999, Davos, Switzerland N2 - We report on dynamic measurements on antiphase complex coupled 1.55 /spl mu/m DFB lasers. The antiphase complex coupling mechanism is realized by periodically etching the active layer and quarternary InGaAsP overgrowth. This new fabrication approach results in very narrow linewidths measured on devices with rather short resonator lengths. The minimum linewidth for a 375 /spl mu/m long ridge waveguide laser was only 250 kHz at an optical output power of 4 mW. The RC-limited 3dB-bandwidth for those devices was /spl sim/6 GHz. Using circuit model corrections, the intrinsic bandwidth limitation of those lasers was found to be 17.4 GHz. KW - Waveguide lasers KW - Optical resonators KW - Optical waveguides KW - Laser modes KW - Optical coupling KW - Etching KW - Optical device fabrication KW - Length measurement KW - Power lasers KW - Power generation Y1 - 1999 SN - 0-7803-5562-8 U6 - https://doi.org/10.1109/ICIPRM.1999.773626 SP - 25 EP - 28 PB - IEEE CY - Piscataway ER -