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Net 220 Gbps/ IM/DD Transmission in O-band and C-band with silicon photonic Traveling-Wave MZM
2021
Journal of Lightwave Technology
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BER threshold of 3.8×10 -3 . ...
In the O-band, with simple linear feed forward equalization, we transmit net 203 (200) Gbps signal over 2 km (10 km) of single-mode fiber (SMF) below the hard-decision forward error correction (HD-FEC) ...
PAM transmission results with Nonlinear Equalization At a transmission reach of 2 km, the non-linearity of the system primarily comes from the system components, rather than the optical fiber. ...
doi:10.1109/jlt.2021.3074096
fatcat:woqfnjynovbbvcfsbfyicgzrri
Quaternary Polarization-Multiplexed Subsystem for High-Capacity IM/DD Optical Data Links
2015
Journal of Lightwave Technology
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Polarization rotation due to propagation over optical fiber is tracked and compensated with simple digital signal processing in Stokes space. ...
The four data-independent tributaries are each assigned distinct states of polarization to enable the receiver to separate the signals. ...
Most research efforts focus on spectrally efficient advanced modulation formats compatible with IM/DDs optics. ...
doi:10.1109/jlt.2015.2397010
fatcat:sy3uwcyd2fftrjjlrzwohiac2u
Multilevel Signaling Technology for Increasing Transmission Capacity in High-Speed Short-Distance Optical Fiber Communication
2019
IEICE transactions on electronics
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In recent intensitymodulated/direct-detection (IM/DD) high-speed optical transceivers with the channel bit rate of 50 and/or 100 Gbit/s, multilevel pulse amplitude modulation (PAM) is finally adopted to ...
To further increase the transmission capacity for the next-generation optical transceivers, various signaling techniques have been studied, especially thanks to advanced digital signal processing (DSP) ...
Acknowledgments This work was partly supported by "The research and development project for the ultra-high speed and green photonic networks" of the Ministry of Internal Affairs and Communications, Japan ...
doi:10.1587/transele.2018odi0004
fatcat:f6mnmewknrhpzngs3aimdckmm4
Advanced Digital Signal Processing Techniques for High-Speed Optical Communications Links
[article]
2019
arXiv
pre-print
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The main topic of this thesis is the application of advanced Digital Signal Processing (DSP) techniques to high data-rate optical links. ...
The second part instead focuses on Probabilistic Constellation Shaping techniques, and their impact on long-haul optical communication links. ...
Acknowledgements The development of any thesis, especially a PhD thesis, cannot be done without the support of many people, in any stage of my research career. ...
arXiv:1903.12260v2
fatcat:i7pdscwz5ffmnnombhtjalsoje
Systematic Performance Comparison of (Duobinary)-PAM-2,4 Signaling under Light and Strong Opto-Electronic Bandwidth Conditions
2021
Photonics
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/DD-based optical networks. ...
We present a systematic comparison of PAM-2 (NRZ), Duobinary-PAM-2, PAM-4, and Duobinary-PAM-4 (duo-quaternary) signaling in the context of short-reach photonic communications systems using a Mach–Zehnder ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/photonics8030081
fatcat:vjt7cwcitfgdrpqbvopalsjgze
High Speed Photonic Neuromorphic Computing Using Recurrent Optical Spectrum Slicing Neural Networks
[article]
2022
arXiv
pre-print
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This is accomplished through simple optical filters placed in an loop, where each filter processes a specific spectral slice of the incoming optical signal. ...
In this work, we present a new concept for realizing photonic recurrent neural networks and reservoir computing architectures with the use of recurrent optical spectrum slicing. ...
(CD) compensation in intensity modulation/direct detection (IM/DD) transmission systems [14] . ...
arXiv:2203.15807v1
fatcat:a3ufaxfcrjbclg5vi2gmpwjd2a
Unlocking Spectral Efficiency in Intensity Modulation and Direct Detection Systems
2015
IEEE Journal on Selected Areas in Communications
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efficiency of OFDM-based intensity modulation and direct detection (IM/DD) systems. ...
Index Terms-optical wireless communication (OWC), orthogonal frequency division multiplexing (OFDM), optical modulation, intensity modulation and direct detection (IM/DD). ...
Hence, the OFDM signal has to be modified before it can be applied to an IM/DD system. ...
doi:10.1109/jsac.2015.2432530
fatcat:7rwaczs6yvheboxrop5dw5nbqa
A Silicon Photonic PAM-4 Modulator Based on Dual-Parallel Mach–Zehnder Interferometers
2016
IEEE Photonics Journal
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The differential and integral nonlinearities of the device are investigated. A driving scheme and a biasing method that improves the linearity and PAM operation of the device are presented. ...
We report a successful 50-Gbaud single-wavelength transmission of PAM-4 over 2 km of single-mode fiber (SMF) below hard decision pre forward error correction (pre-FEC) threshold of 4:4 Â 10 À3 . ...
PAM-4 can achieve up to twice the spectral efficiency of OOK while using the same intensity modulation direct detection (IM-DD) receiver architecture. ...
doi:10.1109/jphot.2015.2512105
fatcat:opqp44uszfgxvhol2eozrt5eqq
Sensitivity Improvement in 100 Gb/s-per-Wavelength Links Using Semiconductor Optical Amplifiers or Avalanche Photodiodes
2016
Journal of Lightwave Technology
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Using the 4-PAM and linear equalization, an SOA with 20-dB fiber-to-fiber gain and 6-dB noise figure can improve the receiver sensitivity up to 6 dB over a thermal noiselimited receiver, whereas an APD ...
We further present a simple algorithm to optimize the intensity levels and decision thresholds for a generic non-Gaussian noise distribution, which can provide an additional sensitivity improvement of ...
ACKNOWLEDGMENT The authors would like to thank the helpful discussions with A. Shastri and J. Filip. ...
doi:10.1109/jlt.2016.2620139
fatcat:wcrxqu3ezjhu3baogxkacleuh4
Spectrally and Power Efficient Optical Communication Systems
[article]
2018
arXiv
pre-print
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optical amplifiers, ultimately limiting the optical power and throughput per fiber. ...
For short-reach links in data centers, we propose low-power coherent receiver architectures that completely avoid high-speed analog-to-digital converters and digital signal processors. ...
As CD is a nonlinear operation in IM-DD systems, receiver-side linear equalization is not effective. ...
arXiv:1806.01945v1
fatcat:3wcwlgfqenaize5qwhhesjm2bm
A review of gallium nitride LEDs for multi-gigabit-per-second visible light data communications
2017
Semiconductor Science and Technology
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This is an order of magnitude higher than the traditional broad-area LEDs and makes µLEDs attractive sources for multi-Gbit/s VLC systems [25] , [26] . ...
In fibre systems, the availability of low cost plastic optical fibre (POF) that is compatible with visible data communications has been a key enabler. ...
We also gratefully acknowledge the contributions to this work of all the partners in UP-VLC. ...
doi:10.1088/1361-6641/32/2/023001
fatcat:iyl2iqfnzjbrfjblw4e3q3oeq4
Impact of Analog and Digital Pre-emphasis on the Signal-to-Noise Ratio of Bandwidth-limited Optical Transceivers
2020
IEEE Photonics Journal
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pre-emphasis, and demonstrate 1.1-dB increase of receiver sensitivities, for both 64-Gb/s and 128-Gb/s intensity-modulation direct detection (IM-DD) PAM4 signals, respectively employing a directly modulated ...
This trade-off between SNR and bandwidth conflicts with the high SNR requirement of advanced modulation formats such as the Nyquist-shaped pulse amplitude modulation (PAM). ...
The transceiver performance could be further improved by using a higher order analog pre-emphasis filter to fully compensate for the roll-off. ...
doi:10.1109/jphot.2020.2966617
fatcat:cbe5nmyvzvb2zojhk2xvk3pmbu
5G wireless and wired convergence in a passive optical network using UF-OFDM and GFDM
2017
2017 IEEE International Conference on Communications Workshops (ICC Workshops)
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with a digital 10Gb/s pulse amplitude modulation (PAM-4) signal in the downlink direction. ...
In this work, for the first time, the convergence of 5G wireless candidate waveforms with a single-carrier wired signal is demonstrated in a PON. ...
PAM-4 was chosen as it has recently gained interest for use in future optical access networks as its low complexity, and compatibility with current intensity modulation/direct detection (IM/DD) implementations ...
doi:10.1109/iccw.2017.7962688
dblp:conf/icc/BrowningFSMVDB17
fatcat:5x2kiu6jfzdxpmv55dxgfgmp54
5G Wireless and Wired Convergence in a Passive Optical Network using UF-OFDM and GFDM
[article]
2017
arXiv
pre-print
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with a digital 10Gb/s pulse amplitude modulation (PAM) signal in the downlink direction. ...
In this work, for the first time, the convergence of 5G wireless candidate waveforms with a single-carrier wired signal is demonstrated in a PON. ...
PAM-4 was chosen as it has recently gained interest for use in future optical access networks as its low complexity, and compatibility with current intensity modulation/direct detection (IM/DD) implementations ...
arXiv:1703.01956v1
fatcat:mzhqico2g5gyvcgl2am2wu32mu
Machine Learning Applications for Short Reach Optical Communication
2022
Photonics
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With the rapid development of optical communication systems, more advanced techniques conventionally used in long-haul transmissions have gradually entered systems covering shorter distances below 100 ...
(OPM), modulation format identification (MFI), signal processing and in-building/indoor optical wireless communications. ...
signal IM/DD, 4 km SSMF
112 Gbps PAM-4
Linear and nonlinear DSO sampled digital ...
doi:10.3390/photonics9010030
fatcat:n436p2z4vvbhlltafonxxnai5y
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