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Advanced Digital Signal Processing Techniques for High-Speed Optical Communications Links [article]

Dario Pilori
2019 arXiv   pre-print
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

Apostolos Argyris
2022 Nanophotonics  
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

Zhixin Liu, Yasuhiro Matsui, Richard Schatz, Ferdous Khan, Martin Kwakernaak, Tsurugi Sudo
2020 Journal of Lightwave Technology  
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

Yapeng Xie, Yitong Wang, Sithamparanathan Kandeepan, Ke Wang
2022 Photonics  
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

Abdul Rahim, Artur Hermans, Benjamin Wohlfeil, Despoina Petousi, Bart Kuyken, Dries Van Thourhout, Roel Baets
2021 Advanced Photonics  
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]

Jose Krause Perin
2018 arXiv   pre-print
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

Jose Krause Perin, Anujit Shastri, Joseph M. Kahn
2017 Journal of Lightwave Technology  
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

Zhixin Liu, Radan Slavik
2019 Journal of Lightwave Technology  
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

Isiaka Alimi, Romil Patel, Nuno Silva, Chuanbowen Sun, Honglin Ji, William Shieh, Armando Pinto, Nelson Muga
2021 Applied Sciences  
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

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

Paolo Minzioni, Cosimo Lacava, Takasumi Tanabe, Jianji Dong, Xiaoyong Hu, Gyorgy Csaba, Wolfgang Porod, Ghanshyam Singh, Alan E Willner, Ahmed Almaiman, Victor Torres-Company, Jochen Schröder (+20 others)
2019 Journal of Optics  
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

G.-W. Truong, S. Scholten, F. Karim, J. D. Anstie, C. Perrella, P. Light, Dong Wei, E. F. May, T. M. Stace, A. N. Luiten
2018 Conference on Lasers and Electro-Optics   unpublished
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

Y. Ding, D. Llewellyn, I. Faruque, S. Paesani, D. Bacco, R. Santagati, Y. Qian, Y. Li, Y. Xiao, M. Huber, M. Malik, G. Sinclair (+8 others)
2019 Conference on Lasers and Electro-Optics   unpublished
. 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