Title :
1.3 μm Electroabsorption Modulated lasers for PAM4/PAM8 single channel 100 Gb/s
Author :
Troppenz, Ute ; Narodovitch, Michael ; Kottke, Christoph ; Przyrembel, G. ; Molzow, Wolf-Dietrich ; Sigmund, A. ; Bach, H.-G. ; Moehrle, Martin
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst., Berlin, Germany
Abstract :
1.3μm Electroabsorption Modulated DFB Lasers (EMLs) operating at 45°C are presented for higher order intensity modulation formats. The application of Pulse Amplitude Modulation (PAM) is experimentally demonstrated for PAM4/PAM8 coding at symbol rates of 28 GBd. With integrated impedance matching the low cost EML shows an increased optical modulation bandwidth of 40 GHz. NRZ eyes at 56 Gb/s have been measured with dynamic extinction ratio of > 9 dB which demonstrates the potential of the devices for PAM at higher symbol rates. The EML performance is discussed for application in single channel solutions of direct detection 100G atacomm systems.
Keywords :
distributed feedback lasers; electro-optical modulation; electroabsorption; intensity modulation; optical communication equipment; pulse amplitude modulation; EML performance; NRZ eyes; PAM4/PAM8 coding; PAM4/PAM8 single channel; bandwidth 40 GHz; bit rate 100 Gbit/s; bit rate 56 Gbit/s; direct detection 100G atacomm systems; dynamic extinction ratio; electroabsorption modulated DFB lasers; higher order intensity modulation formats; integrated impedance matching; optical modulation bandwidth; pulse amplitude modulation; single channel solutions; symbol rates; temperature 45 degC; wavelength 1.3 mum; Bandwidth; Encoding; Optical fibers; Optical modulation; Optical transmitters;
Conference_Titel :
Indium Phosphide and Related Materials (IPRM), 26th International Conference on
Conference_Location :
Montpellier
DOI :
10.1109/ICIPRM.2014.6880562
