Title :
Direct modulation 565 Mb/s DPSK experiment with 62.3 dB loss span and endless polarization control
Author :
Noé, R. ; Meissner, E. ; Borchert, B. ; Rodler, H.
Author_Institution :
Siemens AG, Munchen, Germany
Abstract :
Optical DPSK at 565 Mb/s is performed by direct modulation of a narrow-linewidth 1.5- mu m SL-QW-DFB (strain layer-quantum well-distributed feedback) transmitter laser. The bipolar RZ drive signal has no DC component which allows penalty-free transmission of 2/sup 23/-1 bit patterns. The heterodyne receiver contains an endless polarization controller with <6.3 or >12 rad/s tracking speed, depending on the tolerable intensity loss. A loss span of 62.3 dB is achieved,without degradation due to stimulated Brillouin scattering.<>
Keywords :
distributed feedback lasers; optical communication; optical modulation; optical receivers; phase shift keying; semiconductor lasers; stimulated Brillouin scattering; 1.5 micron; 565 Mbit/s; 62.3 dB; SL-QW-DFB transmitter laser; bipolar RZ drive signal; direct modulation; endless polarization control; loss span; penalty-free transmission; stimulated Brillouin scattering; strain layer-quantum well-distributed feedback; tolerable intensity loss; tracking speed; Differential quadrature phase shift keying; Laser feedback; Nonlinear optics; Optical feedback; Optical losses; Optical mixing; Optical modulation; Optical receivers; Optical scattering; Optical transmitters;
Journal_Title :
Photonics Technology Letters, IEEE
