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

U Troppenz,Michael Narodovitch,Christoph Kottke,G Przyrembel,W D Molzow,A Sigmund,Heinzgunter Bach,M Moehrle

Indium Phosphide and Related Materials（2014）

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摘要

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.

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关键词

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,single channel solutions,symbol rates,temperature 45 degc,wavelength 1.3 mum,encoding,bandwidth,optical fibers

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