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1.3 μm Electroabsorption Modulated lasers for PAM4/PAM8 single channel 100 Gb/s

: Troppenz, U.; Narodovitch, M.; Kottke, C.; Przyrembel, G.; Molzow, W.D.; Sigmund, A.; Bach, H.G.; Moehrle, M.


Institute of Electrical and Electronics Engineers -IEEE-:
26th International Conference on Indium Phosphide and Related Materials (IPRM 2014). Proceedings : Montpellier, France, 11 - 15 May 2014
Piscataway, NJ: IEEE, 2014
ISBN: 978-1-4799-5730-9
ISBN: 978-1-4799-5729-3
2 S.
International Conference on Indium Phosphide and Related Materials (IPRM) <26, 2014, Montpellier>
Fraunhofer HHI ()

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.