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Papers by Andreas Steffan
Physica Status Solidi B-basic Solid State Physics, 2003
ABSTRACT
2006 International Conference on Indium Phosphide and Related Materials Conference Proceedings, 2006
We demonstrate excellent 40 Gbit/s operation of a packaged InP Mach-Zehnder-Modulator with a low ... more We demonstrate excellent 40 Gbit/s operation of a packaged InP Mach-Zehnder-Modulator with a low rms jitter of 730 fs. A modulator with 63 GHz on-chip bandwidth is shown as a step towards 80 Gbit/s transmission.
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference, 2008
In this paper, we analyse and demonstrate the use of photonic functions to fulfill the requiremen... more In this paper, we analyse and demonstrate the use of photonic functions to fulfill the requirements of 60 GHz broadband radio communication systems for access and home area networks. In the access domain, high capacity mmW radio systems are used as point to point links for mobile backhaul or as bridges between fixed transport networks. We demonstrate first the provision
Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, 2009
The system performance of an InP-based electrical demultiplexer within an optically pre-amplified... more The system performance of an InP-based electrical demultiplexer within an optically pre-amplified 107 Gb/s OOK receiver is investigated. Error-free performance was achieved in back-to-back configuration.
36th European Conference and Exhibition on Optical Communication, 2010
![Research paper thumbnail of 60 GHz radio-over-fiber technologies for broadband wireless services [Invited]](https://attachments.academia-assets.com/39751470/thumbnails/1.jpg)
](Journal of Optical Networking, 2009
National Fiber Optic Engineers Conference, 2010
A complete ETDM system based on monolithically integrated transmitter and receiver modules was de... more A complete ETDM system based on monolithically integrated transmitter and receiver modules was demonstrated with BER performance below FEC threshold up to 107 Gb/s. ETDM signal at 112 Gb/s with clear eye opening was also observed.
Optical Fiber Communication Conference, 2010
Monolithically integrated lasers with electro-absorption modulators are popular transmitters in m... more Monolithically integrated lasers with electro-absorption modulators are popular transmitters in modern optical communication. A Distributed Feedback (DFB) laser is used to generate high quality continuous wave (CW) optical signal, where high speed and efficient modulation ...
Optical Fiber Communication, 2006
A RZ-DPSK transmitter is assembled applying a phaseCOMB laser as compact and spectrally efficient... more A RZ-DPSK transmitter is assembled applying a phaseCOMB laser as compact and spectrally efficient carved source. System performance is evaluated at 40 Gbit/s and error free transmission over 160 km standard single-mode fibre is demonstrated
2008 34th European Conference on Optical Communication, 2008
ABSTRACT The linewidth of an improved 40 GHz modelocked laser diode is investigated. The influenc... more ABSTRACT The linewidth of an improved 40 GHz modelocked laser diode is investigated. The influence of its operation parameters on linewidth and the resulting performance in a 40Gband-DQPSK system is evaluated.
2008 34th European Conference on Optical Communication, 2008
Optical Fiber Communication Conference, 2014
ABSTRACT We demonstrate a high-responsivity (0.52 A/W) and high-linearity 50 GHz photodiode modul... more ABSTRACT We demonstrate a high-responsivity (0.52 A/W) and high-linearity 50 GHz photodiode module based on an MMI-Splitter and a 4×PD-Array with +3.5 dBm RF-power at 50 GHz and an OIP3 of >25 dBm at 40 GHz.
Optoelectronic Interconnects XIII, 2013
ABSTRACT Optical modulators are key components in optical data links and are, currently, the subj... more ABSTRACT Optical modulators are key components in optical data links and are, currently, the subject of much research. Here we combine a comb laser with a series of cascaded photonic crystal modulators. A silicon nitride waveguide is used as the bus providing a near ideal means of routing light around a photonic chip as well as low insertion losses from optical fibre. This is vertically coupled to the photonic crystal cavities, the large free spectral range of which provides very high scalability along with very low (~femtojoule) switching energies. Finally, we show a route to integrating optics with electronics at the frontend. Combined with the low silicon area consumed by vertically coupled photonic crystal cavities, this is very promising for future optical interconnects.
Optical Fiber Communication Conference, 2012
37th European Conference and Exposition on Optical Communications, 2011
Optical Fiber Communication Conference, 2012
National Fiber Optic Engineers Conference, 2010
A method for recovering the O/E frequency response of D(Q)PSK receivers with integrated delay-lin... more A method for recovering the O/E frequency response of D(Q)PSK receivers with integrated delay-line interferometers (DLIs) is presented. Modulator chirp is canceled by measuring at specific DLI phases, making the approach robust and versatile.
Semiconductor Science and Technology, 2011
Page 1. Fabrication of an electro-absorption transceiver with a monolithically integrated optical... more Page 1. Fabrication of an electro-absorption transceiver with a monolithically integrated optical amplifier for fiber transmission of 4060 GHz radio signals This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2011 Semicond. Sci. ...
Journal of Lightwave Technology, 2000
A1 6 112 Gb/s field transmission trial was suc- cessfully performed over legacy fiber infrastruct... more A1 6 112 Gb/s field transmission trial was suc- cessfully performed over legacy fiber infrastructure of Deutsche Telekom comprising partially high polarization mode dispersion (PMD) values of 8 ps. Using a commercial PMD compensator, transmission over high PMD with negligible penalty was achieved. Enabled by the maturity of 43 Gb/s components, a 112 Gb/s nonreturn to zero (NRZ) differential quadrature phase-shift keying modulation format for dense wavelength division mul- tiplexing transmissions with good system margins of 5 dB over 450 km metro distances (3 dB over 764 km) was demonstrated. By using high baud rate of 56 Gbd, penalty-free transmission is performed when copropagating with either 10.7 Gb/s NRZ or 43 Gb/s phase-shaped binary transmission signal channels. Index Terms—Copropagation with 10 and 40 Gb/s dense wavelength division multiplexing (DWDM) signals, differential quadrature phase-shift keying (DQPSK) modulation format, field trial, metro systems, polarization mode dispersion (PMD) compensation, 100 Gb/s transmission.
Physica Status Solidi B-basic Solid State Physics, 2003
ABSTRACT
2006 International Conference on Indium Phosphide and Related Materials Conference Proceedings, 2006
We demonstrate excellent 40 Gbit/s operation of a packaged InP Mach-Zehnder-Modulator with a low ... more We demonstrate excellent 40 Gbit/s operation of a packaged InP Mach-Zehnder-Modulator with a low rms jitter of 730 fs. A modulator with 63 GHz on-chip bandwidth is shown as a step towards 80 Gbit/s transmission.
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference, 2008
In this paper, we analyse and demonstrate the use of photonic functions to fulfill the requiremen... more In this paper, we analyse and demonstrate the use of photonic functions to fulfill the requirements of 60 GHz broadband radio communication systems for access and home area networks. In the access domain, high capacity mmW radio systems are used as point to point links for mobile backhaul or as bridges between fixed transport networks. We demonstrate first the provision
Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, 2009
The system performance of an InP-based electrical demultiplexer within an optically pre-amplified... more The system performance of an InP-based electrical demultiplexer within an optically pre-amplified 107 Gb/s OOK receiver is investigated. Error-free performance was achieved in back-to-back configuration.
36th European Conference and Exhibition on Optical Communication, 2010
Journal of Optical Networking, 2009
National Fiber Optic Engineers Conference, 2010
A complete ETDM system based on monolithically integrated transmitter and receiver modules was de... more A complete ETDM system based on monolithically integrated transmitter and receiver modules was demonstrated with BER performance below FEC threshold up to 107 Gb/s. ETDM signal at 112 Gb/s with clear eye opening was also observed.
Optical Fiber Communication Conference, 2010
Monolithically integrated lasers with electro-absorption modulators are popular transmitters in m... more Monolithically integrated lasers with electro-absorption modulators are popular transmitters in modern optical communication. A Distributed Feedback (DFB) laser is used to generate high quality continuous wave (CW) optical signal, where high speed and efficient modulation ...
Optical Fiber Communication, 2006
A RZ-DPSK transmitter is assembled applying a phaseCOMB laser as compact and spectrally efficient... more A RZ-DPSK transmitter is assembled applying a phaseCOMB laser as compact and spectrally efficient carved source. System performance is evaluated at 40 Gbit/s and error free transmission over 160 km standard single-mode fibre is demonstrated
2008 34th European Conference on Optical Communication, 2008
ABSTRACT The linewidth of an improved 40 GHz modelocked laser diode is investigated. The influenc... more ABSTRACT The linewidth of an improved 40 GHz modelocked laser diode is investigated. The influence of its operation parameters on linewidth and the resulting performance in a 40Gband-DQPSK system is evaluated.
2008 34th European Conference on Optical Communication, 2008
Optical Fiber Communication Conference, 2014
ABSTRACT We demonstrate a high-responsivity (0.52 A/W) and high-linearity 50 GHz photodiode modul... more ABSTRACT We demonstrate a high-responsivity (0.52 A/W) and high-linearity 50 GHz photodiode module based on an MMI-Splitter and a 4×PD-Array with +3.5 dBm RF-power at 50 GHz and an OIP3 of >25 dBm at 40 GHz.
Optoelectronic Interconnects XIII, 2013
ABSTRACT Optical modulators are key components in optical data links and are, currently, the subj... more ABSTRACT Optical modulators are key components in optical data links and are, currently, the subject of much research. Here we combine a comb laser with a series of cascaded photonic crystal modulators. A silicon nitride waveguide is used as the bus providing a near ideal means of routing light around a photonic chip as well as low insertion losses from optical fibre. This is vertically coupled to the photonic crystal cavities, the large free spectral range of which provides very high scalability along with very low (~femtojoule) switching energies. Finally, we show a route to integrating optics with electronics at the frontend. Combined with the low silicon area consumed by vertically coupled photonic crystal cavities, this is very promising for future optical interconnects.
Optical Fiber Communication Conference, 2012
37th European Conference and Exposition on Optical Communications, 2011
Optical Fiber Communication Conference, 2012
National Fiber Optic Engineers Conference, 2010
A method for recovering the O/E frequency response of D(Q)PSK receivers with integrated delay-lin... more A method for recovering the O/E frequency response of D(Q)PSK receivers with integrated delay-line interferometers (DLIs) is presented. Modulator chirp is canceled by measuring at specific DLI phases, making the approach robust and versatile.
Semiconductor Science and Technology, 2011
Page 1. Fabrication of an electro-absorption transceiver with a monolithically integrated optical... more Page 1. Fabrication of an electro-absorption transceiver with a monolithically integrated optical amplifier for fiber transmission of 4060 GHz radio signals This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2011 Semicond. Sci. ...
Journal of Lightwave Technology, 2000
A1 6 112 Gb/s field transmission trial was suc- cessfully performed over legacy fiber infrastruct... more A1 6 112 Gb/s field transmission trial was suc- cessfully performed over legacy fiber infrastructure of Deutsche Telekom comprising partially high polarization mode dispersion (PMD) values of 8 ps. Using a commercial PMD compensator, transmission over high PMD with negligible penalty was achieved. Enabled by the maturity of 43 Gb/s components, a 112 Gb/s nonreturn to zero (NRZ) differential quadrature phase-shift keying modulation format for dense wavelength division mul- tiplexing transmissions with good system margins of 5 dB over 450 km metro distances (3 dB over 764 km) was demonstrated. By using high baud rate of 56 Gbd, penalty-free transmission is performed when copropagating with either 10.7 Gb/s NRZ or 43 Gb/s phase-shaped binary transmission signal channels. Index Terms—Copropagation with 10 and 40 Gb/s dense wavelength division multiplexing (DWDM) signals, differential quadrature phase-shift keying (DQPSK) modulation format, field trial, metro systems, polarization mode dispersion (PMD) compensation, 100 Gb/s transmission.