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C. Koos,
L. Alloatti,
D. Korn,
R. Palmer,
T. Vallaitis,
R. Bonk,
D. Hillerkuss, J. Li,
W. Bogaerts,
P. Dumon,
R. Baets,
M.L. Scimeca,
I. Biaggio,
A. Barklund,
R. Dinu,
J. Wieland,
M. Fournier,
J. Fedeli,
W. Freude,
J. Leuthold
[show abstract]
[hide abstract]
ABSTRACT: Silicon nanophotonics is considered a key enabler of future photonic-electronic information processing systems. Driven by substantial research investments, photonic integration on silicon-on-insulator (SOI) substrates has reached a degree of maturity that already permits industrial adoption. Silicon-organic hybrid integration (SOH) is a viable extension of the SOI material system for efficient electro-optic modulation and ultrafast all-optical signal processing.
General Assembly and Scientific Symposium, 2011 XXXth URSI; 09/2011
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L Alloatti,
D Korn,
R Palmer,
D Hillerkuss, J Li,
A Barklund,
R Dinu,
J Wieland,
M Fournier,
J Fedeli,
H Yu,
W Bogaerts,
P Dumon,
R Baets,
C Koos,
W Freude,
J Leuthold
[show abstract]
[hide abstract]
ABSTRACT: CMOS-compatible optical modulators are key components for future silicon-based photonic transceivers. However, achieving low modulation voltage and high speed operation still remains a challenge. As a possible solution, the silicon-organic hybrid (SOH) platform has been proposed. In the SOH approach the optical signal is guided by a silicon waveguide while the electro-optic effect is provided by an organic cladding with a high χ(2)-nonlinearity. In these modulators the optical nonlinear region needs to be connected to the modulating electrical source. This requires electrodes, which are both optically transparent and electrically highly conductive. To this end we introduce a highly conductive electron accumulation layer which is induced by an external DC "gate" voltage. As opposed to doping, the electron mobility is not impaired by impurity scattering. This way we demonstrate for the first time data encoding with an SOH electro-optic modulator. Using a first-generation device at a data-rate of 42.7 Gbit/s, widely open eye diagrams were recorded. The measured frequency response suggests that significantly larger data rates are feasible.
Optics Express 06/2011; 19(12):11841-51. · 3.59 Impact Factor
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D. Hillerkuss,
R. Schmogrow,
T. Schellinger,
M. Jordan,
M. Winter,
G. Huber,
T. Vallaitis,
R. Bonk,
P. Kleinow,
F. Frey, [......],
A. Oehler,
K. Weingarten,
T. Ellermeyer,
J. Lutz,
M. Moeller,
M. Huebner,
J. Becker,
C. Koos,
W. Freude,
J. Leuthold
Nature Photonics 05/2011; 5(6):364-371. · 29.28 Impact Factor
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L. Alloatti,
D. Korn,
D. Hillerkuss,
T. Vallaitis, J. Li,
R. Bonk,
R. Palmer,
T. Schellinger,
A. Barklund,
R. Dinu,
J. Wieland,
M. Fournier,
J. Fedeli,
P. Dumon,
R. Baets,
C. Koos,
W. Freude,
J. Leuthold
[show abstract]
[hide abstract]
ABSTRACT: A 40 Gbit/s electro-optic modulator is demonstrated. The modulator is based on a slotted silicon waveguide filled with an organic material. The silicon organic hybrid (SOH) approach allows combining highly nonlinear electro-optic organic materials with CMOS-compatible silicon photonics technology.
Optical Communication (ECOC), 2010 36th European Conference and Exhibition on; 10/2010
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L. Alloatti,
D. Korn,
D. Hillerkuss,
T. Vallaitis, J. Li,
R. Bonk,
R. Palmer,
T. Schellinger,
C. Koos,
W. Freude,
J. Leuthold,
M. Fournier,
J. Fedeli,
A. Barklund,
R. Dinu,
J. Wieland,
W. Bogaerts,
P. Dumon,
R. Baets
[show abstract]
[hide abstract]
ABSTRACT: A 40 Gbit/s electro-optic modulator is demonstrated. The modulator is based on a slotted silicon waveguide filled with a nonlinear organic material. A modulation voltage-length product of V<sub>π</sub>L = 0.21 Vcm can be achieved.
Group IV Photonics (GFP), 2010 7th IEEE International Conference on; 10/2010
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[show abstract]
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ABSTRACT: The discrete Fourier Transform (DFT) or its more popular efficient algorithm, the Fast Fourier Transform (FFT) is one of the important mathematical functions in the toolbox of signal processing. To this date its processing speed is limited by the underlying electronic processors. We show that FFT signal processing limitations can be overcome by performing the FFT in the optical domain and demonstrate the power of the technique by performing the FFT on a single source 10 Tbit/s OFDM signal.
Transparent Optical Networks (ICTON), 2010 12th International Conference on; 08/2010
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[show abstract]
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ABSTRACT: A practical scheme to perform the fast Fourier transform in the optical domain is introduced. Optical real-time FFT signal processing is done at speeds far beyond the limits of electronic digital processing, and at a negligible energy expenditure. To illustrate the power of the method we demonstrate an optical 400 Gbit/s OFDM receiver. It performs an optical real-time FFT on the consolidated OFDM data stream, thereby demultiplexing the signal into lower bit rate subcarrier tributaries, which can then be processed electronically.
Photonic Networks, 2010 ITG Symposium on; 06/2010
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International Conference on Transparent Optical Networks (ICTON); 06/2010
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Proceedings of ITG Fachtagung Photonische Netze; 05/2010
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D Hillerkuss,
M Winter,
M Teschke,
A Marculescu, J Li,
G Sigurdsson,
K Worms,
S Ben Ezra,
N Narkiss,
W Freude,
J Leuthold
[show abstract]
[hide abstract]
ABSTRACT: A practical scheme to perform the fast Fourier transform in the optical domain is introduced. Optical real-time FFT signal processing is performed at speeds far beyond the limits of electronic digital processing, and with negligible energy consumption. To illustrate the power of the method we demonstrate an optical 400 Gbit/s OFDM receiver. It performs an optical real-time FFT on the consolidated OFDM data stream, thereby demultiplexing the signal into lower bit rate subcarrier tributaries, which can then be processed electronically.
Optics Express 04/2010; 18(9):9324-40. · 3.59 Impact Factor
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D. Hillerkuss,
M. Winter,
M. Teschke,
A. Marculescu, J. Li,
G. Sigurdsson,
K. Worms,
S. Ben Ezra,
N. Narkiss,
W. Freude,
J. Leuthold
Optics Express 04/2010; 18(9-9):9324. · 3.59 Impact Factor
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[show abstract]
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ABSTRACT: Experimentally we find a 10 dB input power dynamic range advantage for amplification of phase encoded signals with quantum dot SOA as compared to low-confinement bulk SOA. An analysis of amplitude and phase effects shows that this improvement can be attributed to the lower alpha-factor found in QD SOA.
Optics Express 03/2010; 18(6):6270-6. · 3.59 Impact Factor
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D. Hillerkuss,
T. Schellinger,
R. Schmogrow,
M. Winter,
T. Vallaitis,
R. Bonk,
A. Marculescu, J. Li,
M. Dreschmann,
J. Meyer, [......],
B. Resan,
K. Weingarten,
T. Ellermeyer,
J. Lutz,
M. Möller,
M. Hübner,
J. Becker,
C. Koos,
W. Freude,
J. Leuthold
Conference on Optical Fiber Communication (OFC); 03/2010
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[show abstract]
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ABSTRACT: We demonstrate 40 Gb/s SOA-based wavelength conversion from a RZ into a vestigial-sideband RZ signal. SOA related pattern effects are successfully suppressed by proper choice of the red-shift optical filter.
Optical Communication, 2008. ECOC 2008. 34th European Conference on; 10/2008
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[show abstract]
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ABSTRACT: A technique to overcome pattern effects due to slow recovery times in SOA based wavelength converters is presented. It uses the superposition of the outputs of red-shifted and blue-shifted filters having complementary pattern effects.
Optical Communication (ECOC), 2007 33rd European Conference and Ehxibition of; 10/2007
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T Vallaitis,
R Bonk,
J Guetlein,
D Hillerkuss, J Li,
W Freude,
J Leuthold,
C Koos,
M L Scimeca,
I Biaggio,
F Diederich,
B Breiten,
P Dumon,
R Baets
[show abstract]
[hide abstract]
ABSTRACT: All-optical wavelength conversion of 56 Gbit/s NRZ-DQPSK based on four-wave mixing is demonstrated in a silicon-organic hybrid strip waveguide operated in TM mode.
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[show abstract]
[hide abstract]
ABSTRACT: A 40 Gbit/s electro-optic modulator is demonstrated. The modulator is based on a slotted silicon waveguide filled with an organic material. The silicon organic hybrid (SOH) approach allows combining highly nonlinear electro-optic organic materials with CMOS-compatible silicon photonics technology. Introduction Silicon-on-insulator (SOI) photonics is consid-ered a promising option for lowest-cost highly integrated photonic circuits. Actual research is oriented towards CMOS fabrication compatibility and complementing the optical toolbox. A fast, inexpensive modulator with low RF power requirements is one of the key components in the integrated optics toolbox that still needs more attention. So far successful silicon photon-ics high-speed approaches are based on the plasma effect [1, 2]. However fundamental speed limitations related to carrier injection and removal are likely to become limiting factors in these techniques. To circumvent limits imposed by the Silicon itself a silicon-organic hybrid (SOH) approach has been suggested. It combines silicon waveguides with a highly χ (2) -nonlinear electro-optic (EO) organic material [3-8]. This technology allows the choice among a variety of highly nonlinear electro-optic materials with significantly larger χ (2)_ susceptibility than LiNbO 3 [8-11].
C. Koos.
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D Hillerkuss,
T Schellinger,
R Schmogrow,
M Winter,
T Vallaitis,
R Bonk,
A Marculescu, J Li,
M Dreschmann,
J Meyer, [......],
B Resan,
K Weingarten,
T Ellermeyer,
J Lutz,
M Möller,
M Huebner,
J Becker,
C Koos,
W Freude,
J Leuthold
[show abstract]
[hide abstract]
ABSTRACT: OFDM data with line rates of 5.4 Tbit/s or 10.8 Tbit/s are generated and decoded with a new real-time all-optical FFT receiver. Each of 75 carriers of a comb source is encoded with 18 GBd QPSK or 16-QAM. ©2010 Optical Society of America OCIS codes: (060.4510) Optical communications; (060.1660) Coherent communications(070.2025) Discrete optical signal processing.
