Title :
Advantages of EADFB laser for 25 Gbaud/s 4-PAM (50 Gbit/s) modulation and 10 km single-mode fibre transmission
Author :
Kobayashi, Wataru ; Fujisawa, T. ; Ito, Takao ; Kanazawa, S. ; Ueda, Yuzuru ; Sanjoh, H.
Author_Institution :
NTT Photonics Labs., NTT Corp., Atsugi, Japan
Abstract :
The 25 Gbaud/s 4-level pulse amplitude modulation (4-PAM) of a 1.3 μm electroabsorption modulator integrated with a distributed feedback (DFB) laser is demonstrated for the first time. The linearities of the electroabsorption DFB (EADFB) laser and the directly modulated laser are evaluated to investigate the applicability of the PAM format to these devices.
Keywords :
distributed feedback lasers; electro-optical modulation; optical communication equipment; optical fibre communication; pulse amplitude modulation; DML; EADFB laser; PAM; SMF transmission; bit rate 50 Gbit/s; directly modulated laser; distance 10 km; distributed feedback laser; electroabsorption modulator; pulse amplitude modulation; single mode fiber; wavelength 1.3 mum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.0529
