High-speed travelling-wave electro-absorption modulators
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 (Refereed)
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.
, PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE), ISSN 0277-786X ; 6350
electroabsorption, modulator, travelling-wave
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-42100DOI: 10.1117/12.693009ISI: 000241328400003ScopusID: 2-s2.0-33749835146ISBN: 0-8194-6445-7OAI: oai:DiVA.org:kth-42100DiVA: diva2:446510
Workshop on Optical Components for Broadband Communication. Stockholm, SWEDEN. JUN 28-29, 2006
QC 201110072011-10-072011-10-052011-10-07Bibliographically approved