Single Source Optical OFDM Transmitter and Optical FFT Receiver Demonstrated at Line Rates of 5.4 and 10.8 Tbit/s

Hillerkuss, D.; Schellinger, T.; Schmogrow, R.; Winter, Marcus; Vallaitis, T.; Bonk, R.; Marculescu, A.; Li, J.; Dreschmann, M.; Meyer, J.; Ezra, S. Ben; Narkiss, N.; Nebendahl, B.; Parmigiani, Francesca; Petropoulos, P.; Resan, Bojan; Weingarten, K. J.; Ellermeyer, T.; Lutz, Joachim; Möller, Michael; Huebner, M.; Becker, Juergen; Koos, C.; Freude, W.; Leuthold, Juerg

doi:10.1364/ofc.2010.pdpc1

Cited by 41 publications

(42 citation statements)

References 6 publications

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“…An alternative approach is to use passively-stabilized interferometers, which have been developed over the last decade by the optical telecommunication industry for use in classical phase-and frequency-domain protocols [22,23]. One design principle for addressing the thermal change of the path length is to adopt athermal design, where materials with different thermal expansion coefficients are used to achieve temperature compensation [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Robust and Stable Delay Interferometers with Application tod-Dimensional Time-Frequency Quantum Key Distribution

et al. 2017

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We investigate experimentally a cascade of temperature-compensated unequal-path interferometers that can be used to measure frequency states in a high-dimensional quantum distribution system. In particular, we demonstrate that commercially-available interferometers have sufficient environmental isolation so that they maintain an interference visibility greater than 98.5% at a wavelength of 1550 nm over extended periods with only moderate passive control of the interferometer temperature (< ±0.50 • C). Specifically, we characterize two interferometers that have matched delays: one with a free-spectral range of 2.5 GHz, and the other with 1.25 GHz. We find that the relative path of these interferometers drifts less than 3 nm over a period of one hour during which the temperature fluctuates by < ±0.10 • C. The error in our measurement is largely dominated by the small drift in the frequency and power of the stabilized laser used to perform the measurement. When we purposely heat the interferometers over a temperature range of 20-50 • C, we find that the temperature sensitivity is different for each interferometer, likely due to slight manufacturing errors during the temperature compensation procedure. Over this range, we measure a path-length shift of 26 ± 9 nm/ • C for the 2.5 GHz interferometer. For the 1.25 GHz interferometer, the path-length shift is nonlinear and is locally equal to zero at a temperature of 37.1 • C and is 50 ± 17 nm/ • C at 22 • C. With these devices, we realize a cascade of 1.25 GHz and 2.5 GHz interferometers to measure four-dimensional classical frequency states created by modulating a stable and continuous-wave laser. We observe a visibility > 99% over an hour, which is mainly limited by our ability to precisely generate these states. Overall, our results indicate that these interferometers are well suited for realistic time-frequency quantum distribution protocols. arXiv:1610.04947v1 [quant-ph]

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Section: Introductionmentioning

confidence: 99%

Robust and Stable Delay Interferometers with Application tod-Dimensional Time-Frequency Quantum Key Distribution

et al. 2017

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“…The spectral efficiency was 3.3 bit/s/Hz. In 2010, using an optical FFT scheme [14], we were able to encode and detect a 10.8 Tbit/s super-channel [15]. Subsequently, we generated and transmitted an OFDM super-channel with a line rate of 26 Tbit/s over a distance of 50 km of standard single mode fiber with standard dispersion compensating modules [4].…”

Section: Introductionmentioning

confidence: 99%

Single-Laser 325 Tbit/s Nyquist WDM Transmission

Hillerkuss

Schmogrow

Meyer

et al. 2012

J. Opt. Commun. Netw.

140

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Abstract-We demonstrate single laser 32.5 Tbit/s 16QAM Nyquist WDM transmission over a total length of 227 km of SMF-28 without optical dispersion compensation. A number of 325 optical carriers are derived from a single laser and encoded with dualpolarization 16QAM data using sinc-shaped Nyquist pulses. As we use no guard bands, the carriers have a spacing of 12.5 GHz equal to the symbol rate or Nyquist bandwidth of the data. We achieve a net spectral efficiency of 6.4 bit/s/Hz using a softwaredefined transmitter, which generates the electric drive-signals for the electro-optic modulator in realtime.

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“…Different approaches can be used to generate OFDM subcarriers in the optical domain. 41], the transmitter generates multiple optical subcarriers from a continuous-wave light source. Each optical subcarrier is then individually modulated, and finally coupled to create an optical OFDM signal, as shown in Fig.…”

Section: ) Optical Approachmentioning

confidence: 99%

A Survey on OFDM-Based Elastic Core Optical Networking

Zhang

Leenheer

Morea³

et al. 2013

IEEE Commun. Surv. Tutorials

347

134

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Abstract-Orthogonalfrequency-division multiplexing (OFDM) is a modulation technology that has been widely adopted in many new and emerging broadband wireless and wireline communication systems. Due to its capability to transmit a high-speed data stream using multiple spectral-overlapped lower-speed subcarriers, OFDM technology offers superior advantages of high spectrum efficiency, robustness against inter-carrier and inter-symbol interference, adaptability to server channel conditions, etc. In recent years, there have been intensive studies on optical OFDM (O-OFDM) transmission technologies, and it is considered a promising technology for future ultra-high-speed optical transmission. Based on O-OFDM technology, a novel elastic optical network architecture with immense flexibility and scalability in spectrum allocation and data rate accommodation could be built to support diverse services and the rapid growth of Internet traffic in the future. In this paper, we present a comprehensive survey on OFDM-based elastic optical network technologies, including basic principles of OFDM, O-OFDM technologies, the architectures of OFDMbased elastic core optical networks, and related key enabling technologies. The main advantages and issues of OFDM-based elastic core optical networks that are under research are also discussed.

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Single Source Optical OFDM Transmitter and Optical FFT Receiver Demonstrated at Line Rates of 5.4 and 10.8 Tbit/s

Cited by 41 publications

References 6 publications

Robust and Stable Delay Interferometers with Application tod-Dimensional Time-Frequency Quantum Key Distribution

Robust and Stable Delay Interferometers with Application tod-Dimensional Time-Frequency Quantum Key Distribution

Single-Laser 325 Tbit/s Nyquist WDM Transmission

A Survey on OFDM-Based Elastic Core Optical Networking

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