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High-speed travelling-wave electro-absorption modulators
KTH, School of Information and Communication Technology (ICT), Centres, Kista Photonics Research Center, KPRC.ORCID iD: 0000-0001-7056-4379
KTH, School of Information and Communication Technology (ICT), Centres, Kista Photonics Research Center, KPRC. KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
KTH, School of Information and Communication Technology (ICT), Centres, Kista Photonics Research Center, KPRC. KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
2006 (English)In: Workshop on Optical Components for Broadband Communication / [ed] Fonjallaz, PY; Pearsall, TP, BELLINGHAM, WA: SPIE-INT SOC OPTICAL ENGINEERING , 2006, Vol. 6350, 35004-35004 p.Conference paper, Published paper (Refereed)
Abstract [en]

Electroabsorption modulators (EAM) based on quantum-confined Stark effect (QCSE) in multiple-quantum wells (MQW) have been demonstrated to provide high-speed, low drive voltage, and high extinction ratio. They are compact in size and can be monolithically integrated with continuous-wave (CW) lasers. In order to achieve both high speed and low drive-voltage operation, travelling-wave (TW) electrode structures can be used for EAMs. The inherently low impedance of high-speed EAMs may be transformed to values close to the standard 500hm impedance using periodic microwave structures with a combination of passive transmission lines with high characteristic impedance and active modulator sections with low impedance. Modulation bandwidths of 100GHz (-3dBe) have been accomplished with electrical reflections lower than -10dB in a 500hm system. Transmission at 80Gbit/s with non-return-to-zero (NRZ) code has been demonstrated for InP-based TWEAMs using electronic time-domain multiplexing (ETDM), indicating the possibility of reaching speeds of 100Gbit/s and beyond.

Place, publisher, year, edition, pages
BELLINGHAM, WA: SPIE-INT SOC OPTICAL ENGINEERING , 2006. Vol. 6350, 35004-35004 p.
Series
PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE), ISSN 0277-786X ; 6350
Keyword [en]
electroabsorption, modulator, travelling-wave
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-42100DOI: 10.1117/12.693009ISI: 000241328400003Scopus ID: 2-s2.0-33749835146ISBN: 0-8194-6445-7 (print)OAI: oai:DiVA.org:kth-42100DiVA: diva2:446510
Conference
Workshop on Optical Components for Broadband Communication. Stockholm, SWEDEN. JUN 28-29, 2006
Note
QC 20111007Available from: 2011-10-07 Created: 2011-10-05 Last updated: 2011-10-07Bibliographically approved

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Westergren, Urban

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Westergren, UrbanYu, YichuanThylen, Lars
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