Adaptive weighted 61‐QAM based on geometric shaping in coherent optical communication utilizing K‐Means algorithm
Sign Up to like & getrecommendations! Published in 2021 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32842
Abstract: A novel adaptive weighted geometric‐shaped (GS) 61 quadrature amplitude modulation (QAM) constellation is proposed in order to mitigate the nonlinear damage and increase the transmission distance. By introducing an adaptive weighting factor related to Kerr… read more here.
Keywords: system; optical communication; communication; utilizing means ... See more keywords
Independent component analysis based digital signal processing in coherent optical fiber communication systems
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.09.018
Abstract: Abstract In this paper, channel equalization techniques for coherent optical fiber transmission systems based on independent component analysis (ICA) are reviewed. The principle of ICA for blind source separation is introduced. The ICA based channel… read more here.
Keywords: independent component; optical fiber; fiber; coherent optical ... See more keywords
Investigation of a coherent optical wireless system for high speed indoor interconnection
Sign Up to like & getrecommendations! Published in 2019 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.11.084
Abstract: Abstract In this paper, we investigate a coherent optical wireless communication system, which is able to support tens of gigabits per second data transmission and suit for high speed indoor interconnection. The modulated optical signal… read more here.
Keywords: optical wireless; coherent optical; wireless system;
A numerical assessment of an effective envelope-tracking semiconductor optical amplifier design for coherent-optical OFDM transmission
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.124474
Abstract: Abstract The inherent nonlinear effects associated to Semiconductor Optical Amplifiers (SOAs) may translate into a transmission performance loss for non-constant envelope modulation formats. However, a variety of linearization schemes may be adopted for coping with… read more here.
Keywords: envelope; semiconductor optical; envelope tracking; ofdm ... See more keywords
Joint channel/frequency offset estimation and correction for coherent optical FBMC/OQAM system
Sign Up to like & getrecommendations! Published in 2017 at "Optical Fiber Technology"
DOI: 10.1016/j.yofte.2017.09.009
Abstract: Abstract In this paper, we focus on analysis of the preamble-based joint estimation for channel and laser-frequency offset (LFO) in coherent optical filter bank multicarrier systems with offset quadrature amplitude modulation (CO-FBMC/OQAM). In order to… read more here.
Keywords: estimation; fbmc oqam; method; coherent optical ... See more keywords
A 4.6-pJ/b 200-Gb/s Analog DP-QPSK Coherent Optical Receiver in 28-nm CMOS
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3211347
Abstract: Coherent detection with polarization multiplexing is widely used because of its high spectral efficiency. However, it utilizes analog-to-digital converters (ADCs) and digital signal processing (DSP), which consume a large amount of power and thereby hinder… read more here.
Keywords: qpsk coherent; analog; 200 analog; tex math ... See more keywords
An Over 67-GHz Bandwidth 21-dB Gain 4.5-Vppd Linear Modulator Driver for 100-GBd Coherent Optical Transmitter
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2021.3062423
Abstract: A linear driver for 100-GBd optical transmitters was designed and fabricated in the 90-nm SiGe BiCMOS process. An output-swing-limiting circuit and multitopology peaking method are proposed to extend the bandwidth. The fabricated driver achieved a… read more here.
Keywords: coherent optical; bandwidth; gain; 100 gbd ... See more keywords
High-Speed SiGe BiCMOS Detector Enabling a 28 Gbps Quasi-Coherent Optical Receiver
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2021.3111451
Abstract: This brief presents a high-speed detector targeting quasi-coherent optical receivers operating up to 28 Gbps data rates. The circuit consists of a balanced rectifier based on diode-connected heterojunction bipolar transistors (HBTs) together with tailored input… read more here.
Keywords: high speed; receiver; quasi coherent; detector ... See more keywords
Significance of modulator extinction ratio in long distance coherent optical time domain reflectometry
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.3.036106
Abstract: Abstract. In coherent optical time-domain reflectometry, external modulation is used to maintain the coherence of laser probe pulses launched into optical fibers. However, the residual continuous wave (CW) component produced by modulation may considerably degrade… read more here.
Keywords: coherent optical; ratio; time domain; optical time ... See more keywords
Doubly differential star-16-QAM for fast wavelength switching coherent optical packet transceiver.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.008201
Abstract: A coherent optical packet transceiver based on doubly differential star 16-ary quadrature amplitude modulation (DD-star-16-QAM) is presented for spectrally and energy efficient reconfigurable networks. The coding and decoding processes for this new modulation format are… read more here.
Keywords: doubly differential; star qam; time; coherent optical ... See more keywords
Inverse design assisted coherent optical lattices.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.455466
Abstract: We explore the use of inverse design methods for the generation of periodic optical patterns in photonic integrated circuits. A carefully selected objective function based on the integer lattice method, which is an algebraic technique… read more here.
Keywords: design assisted; assisted coherent; design; coherent optical ... See more keywords