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Advanced Digital Signal Processing Techniques for High-Speed Optical Communications Links
[article]
2019
arXiv
pre-print
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In the first part, it is proposed a novel bi-directional architecture for <2km Intra-DC link and a detailed analysis of self-coherent single-sideband transmission for <80km dispersion-uncompensated Inter-DC ...
This thesis is divided in two parts: Direct-Detection systems, and Coherent systems. ...
First of all, I would not be even close to getting a PhD without the constant support of my family. ...
arXiv:1903.12260v2
fatcat:i7pdscwz5ffmnnombhtjalsoje
Photonic neuromorphic technologies in optical communications
2022
Nanophotonics
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In a brief introduction, I discuss some of the established digital signal processing (DSP) techniques and some new approaches based on ML and neural network (NN) architectures. ...
Such approaches found fertile ground in optical communications, a technological field that is very demanding in terms of computational speed and complexity. ...
For example, in [100] a PIC that consisted of a distributed-feedback semiconductor laser, an optical amplifier, a phase modulator, and a short external cavity for optical feedback, was shown to exhibit ...
doi:10.1515/nanoph-2021-0578
fatcat:dykdgrpzabbl5hocs6xdzvwgzu
50-GHz Repetition Gain Switching Using A Cavity-enhanced DFB Laser Assisted By Optical Injection Locking
2020
Journal of Lightwave Technology
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We demonstrate pulse generation at a repetition rate of 50 GHz by gain switching an injection-locked distributed feedback (DFB) laser with large modulation bandwidth (BW). ...
The spectrum of the gain-switched OIL directly modulated laser (OIL-DML) showed three sideband peaks above 70% from the peak (full width half maximum of 130 GHz), and a pulse width of 9.5 ps (6.2 ps after ...
ACKNOWLEDGMENT The authors thank Femtochrome for loan of the autocorrelator. ...
doi:10.1109/jlt.2020.2973198
fatcat:z7isshqazjbczgphucdgofhs54
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 ...
In this paper, a comprehensive review of various ML methods and their applications in short-reach optical communications are presented and discussed, focusing on existing and potential advantages, limitations ...
.; Konczykowska, A.; Riet, M.; Nodjiadjim, V.; Dupuy, J.Y.;
et al. 100-Gbaud PAM-4 Intensity-Modulation Direct-Detection Transceiver for Datacenter Interconnect. ...
doi:10.3390/photonics9010030
fatcat:n436p2z4vvbhlltafonxxnai5y
Taking silicon photonics modulators to a higher performance level: state-of-the-art and a review of new technologies
2021
Advanced Photonics
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The focus of our study is to provide a comprehensive review of contemporary (i.e., plasma dispersion modulators) and new modulator implementations that involve the integration of novel materials with SiPh ...
Recent years have seen a paradigm shift where the integration of various electro-refractive and electro-absorptive materials has opened up additional routes toward performant SiPh modulators. ...
Delphine Marris-Morini, and Ashwyn Srinivasan for their valuable comments. This research is partially funded by the ERC starting grant ELECTRIC. ...
doi:10.1117/1.ap.3.2.024003
fatcat:ible77m3czcfzb6d45rro6muhi
Spectrally and Power Efficient Optical Communication Systems
[article]
2018
arXiv
pre-print
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increased losses due to longer fiber plant, multiplexing of more wavelengths, and possibly optical switching. ...
Short-reach links in data centers face strict constraints on power consumption, size, and cost, which will demand low-power solutions that scale to bit rates beyond 100 Gbit/s per wavelength, while accommodating ...
Indeed, as reported in [93], a typical sampled grating (SG) distributed Bragg reflector (DBR) laser with linewidth below 1 MHz had an apparent linewidth ranging from 10 to 50 MHz. ...
arXiv:1806.01945v1
fatcat:3wcwlgfqenaize5qwhhesjm2bm
Design of Low-Power DSP-Free Coherent Receivers for Data Center Links
2017
Journal of Lightwave Technology
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We propose a novel optical polarization demultiplexing technique, for DP-QPSK and higher-order modulation formats, with three cascaded phase shifters driven by marker tone detection circuitry. ...
We estimate conservatively that the high-speed analog electronics of an electrical PLL-based coherent receiver consume nearly 4 W for 200 Gbit/s DP-QPSK, assuming a 90-nm complementary metaloxide semiconductor ...
ACKNOWLEDGMENT The authors would like to thank the helpful discussions with Prof. B. Murmann, and also for the comments and suggestions made by the anonymous reviewers. ...
doi:10.1109/jlt.2017.2752079
fatcat:fpizkq4pdvbu7iejtdwthvevhq
Optical Injection Locking: from Principle to Applications
2019
Journal of Lightwave Technology
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The applications are reviewed with a focus on new developments in the past decade, under the categories of 'High Speed Directly Modulated Lasers' and 'Optical Carrier Recovery'. ...
This paper reviews optical injection locking (OIL) of semiconductor lasers and its application in optical communications and signal processing. ...
In [7] , we OIL a telecom-grade InPbased digital supermode distributed Bragg reflector (DS-DBR) tunable laser to a 25-GHz-spaced frequency comb, showing C-band tunable tone extraction with a simultaneous ...
doi:10.1109/jlt.2019.2945718
fatcat:zgphuxjdsnh6jlxdcsczstvq6y
A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions
2021
Applied Sciences
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Furthermore, a comprehensive tutorial on high-performance, low-cost, and advanced optical transceiver (TRx) paradigms is presented. ...
Moreover, based on the growing increase in the dynamic environment and the heterogeneous nature of different applications and services to be supported by the systems, we discuss the reconfigurable and ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/app11167554
fatcat:fbijur7yjzgopi5i2r4ywzwxde
Comb based Optical Signal Processing
2018
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This thesis explores new applications of frequency comb-based OSP to overcome the limitations of electronics devices, providing photonic alternatives or enhancements to improve tomorrow's communication ...
Especially, higher than 1-THz repetition rates can be achieved with distributed-Bragg-reflector (DBR) laser diodes [198] . ...
A continuous wave (CW) at 1551.385 nm is intensity-modulated with a 1.25-Gbaud non-return-to-zero (NRZ) PAM 4 signal as the pump. ...
doi:10.26180/5bc3fd063e7ba
fatcat:u246gqsjy5bapcwb6voaxtpcf4
Roadmap on all-optical processing
2019
Journal of Optics
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The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the John Templeton Foundation. ...
Much of our group's original research was done by Dr Ádam Papp (Pazmany University) and Dr Stephan Breitkreutz (TU Munich). ...
In addition, wavelength selective reflective elements such as Bragg reflectors at telecom wavelengths have been laser written by creating a periodic structure with a spacing of about 1.3 μm over the type ...
doi:10.1088/2040-8986/ab0e66
fatcat:6zg52wqctvgldeddmehkezzjnq
Measuring Temperature with Atoms and Molecules
2018
Conference on Lasers and Electro-Optics
unpublished
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We propose a novel noise-resistant all-optical sampling with temporal integration. A proof-of-concept experiment shows a receiver sensitivity improvement up to 8-dB for a 1.25 Gbaud PAM 4 signal. ...
A SWG-based cladding-modulated Bragg reflector implemented in bulk CMOS enables a lower propagation loss (< 30 dB/cm), a higher extinction ratio (24.5 dB) and a less-sensitive temperature coefficient ( ...
doi:10.1364/cleo_si.2018.stu3p.3
fatcat:2aon5ltmpfafpmsux5nywbr754
Demonstration of chip-to-chip quantum teleportation
2019
Conference on Lasers and Electro-Optics
unpublished
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. at Electrical and Computer Engineering, Univ. of Toronto, Canada; 2 School of Physics, Univ. of the Witwatersrand, South Africa. ...
We engineer quasi 3D structured light fields in which the orbital angular momentum changes locally in both sign and magnitude along the beam's axis and explain how such transitions occur without violating ...
our approach forUV-VCSELs with double dielectric distributed Bragg reflectors. ...
doi:10.1364/cleo_at.2019.jth5c.4
fatcat:ytixbvycv5e7tlcr5m74negtlu