High-Speed Ultralow-Power Hybrid Optical Transmitter Module With InP I/Q-SEMZM and BiCMOS Drivers With 4-b Integrated DAC

A hybrid optical transmitter module comprising a 15-segment InP in-phase/quadrature-phase segmented Mach-Zehnder modulator and two SiGe:C BiCMOS drivers featuring integrated 4-b digital-to-analog converter functionality is described. The drivers, fabricated in the 0.13-μm process of IHP, deliver a d...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 64; no. 12; pp. 4598 - 4610
Main Authors Garcia Lopez, Iria, Aimone, Alessandro, Rito, Pedro, Alreesh, Saleem, Brast, Tino, Hohns, Volker, Fiol, Gerrit, Gruner, Marko, Fischer, Johannes Karl, Honecker, Jorg, Steffan, Andreas Gerhard, Schell, Martin, Awny, Ahmed, Ulusoy, Ahmet Cagri, Kissinger, Dietmar
Format Journal Article
LanguageEnglish
Published IEEE 01.12.2016
Subjects
32 GBd
BiCMOS
BiCMOS integrated circuits
driver
High-speed optical techniques
hybrid
Indium phosphide
InP modulator
Integrated optics
Mach–Zehnder
Optical modulation
optical modulator
Optical transmitters
optical-digital-to-analog converter (DAC)
pulse amplitude modulation (PAM)
quadrature amplitude modulation (QAM)
SiGe:C HBT
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Summary:A hybrid optical transmitter module comprising a 15-segment InP in-phase/quadrature-phase segmented Mach-Zehnder modulator and two SiGe:C BiCMOS drivers featuring integrated 4-b digital-to-analog converter functionality is described. The drivers, fabricated in the 0.13-μm process of IHP, deliver a differential output voltage of 2.5 V pp across all the 15 segments while dissipating less than 1 W of power each, at the maximum. Clear electrical eye diagrams up to 40-Gb/s from every output are reported. The module allows a wide range of modulation formats, among which up to eight-pulse amplitude modulation and polarization-division-multiplexed (PDM) 64-quadrature amplitude modulation (QAM) back-to-back error-free electro-optical transmission at a record speed of 32 GBd are demonstrated. The 32-GBd PDM 64-QAM signal was transmitted error-free over 80 km of standard single-mode fiber, featuring 7.8-pJ/b energy consumption. The devised hybrid arrangement proves the suitability of SiGe HBT drivers for achieving higher speeds over their CMOS counterparts, with comparable low power dissipation, for advanced optical transceivers.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2016.2622701