Open AccessAdvantages of EADFB laser for 25 Gbaud/s 4‐PAM (50 Gbit/s) modulation and 10 km single‐mode fibre transmission
Author(s) -
Kobayashi W.,
Fujisawa T.,
Ito T.,
Kanazawa S.,
Ueda Y.,
Sanjoh H.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.0529
Subject(s) - gigabit , modulation (music) , transmission (telecommunications) , single mode optical fiber , materials science , laser , optics , optical communication , mode (computer interface) , optoelectronics , electronic engineering , telecommunications , computer science , physics , engineering , acoustics , operating system
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.