Title :
SiGe broadband amplifiers with up to 80 GHz bandwidth for optical applications at 43 Gbit/s and beyond
Author :
Wohlgemuth, O. ; Paschke, P. ; Baeyens, Y.
Author_Institution :
Lucent Technologies, Optical Networking Group, Thurn und Taxis Str. 10, 90411 Nuremberg, Germany, Phone: ++49 911 5263814, Fax: ++49 911 5264823, e-mail: ow2@lucent.com
Abstract :
Two broadband amplifiers for 43 Gbit/s data transmission were realized in a SiGe-HBT technology with ft = 120 GHz and fmax = 100 GHz: a differential lumped limiting amplifier with 36 dB differential gain and 26 GHz bandwidth and a two stage distributed amplifier with a gain-bandwidth product of 820 GHz. Additionally, for applications beyond 43 Gbit/s, a distributed amplifier was realized in a more advanced SiGe process (ft, fmax > 200 GHz). This amplifier achieves 13 dB gain and more than 80 GHz bandwidth, which is the highest bandwidth reported so far for Si-based amplifiers.
Keywords :
Bandwidth; Broadband amplifiers; Data communication; Differential amplifiers; Distributed amplifiers; Gain; Germanium silicon alloys; Optical amplifiers; Silicon germanium; Stimulated emission;
Conference_Titel :
Microwave Conference, 2003 33rd European
Conference_Location :
Munich, Germany
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMA.2003.341096
