Sökning: "Coherent optical transmission"

Hittade 5 uppsatser innehållade orden Coherent optical transmission.

  1. 1. Machine Learning Enabled Nonlinear Phase Noise Mitigation for Coherent Optical Systems

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Sergio Steven Gutierrez; [2020]
    Nyckelord :QAM; NLIN; NLPN; Machine Learning; Coherent Optical Communication; Nonlinear Noise Compensation; Physics and Astronomy; Technology and Engineering;

    Sammanfattning : In the current development of coherent optical communication systems, nonlinear noise is considered to be the ultimate bottleneck when extending the transmission length. In this report we suggest a nonparamter digital signal processing scheme to extend the transmission length of a fiber link. LÄS MER

  3. 2. Statistical Analysis of Equalization Enhanced Phase Noise in Coherent Fiber Optical Communications

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Thomas Gaudy; [2016]
    Nyckelord :;

    Sammanfattning : Coherent optical communications increase the receiver sensitivity and the total capacity. Together with high speed digital signal processing (DSP), compensation for linear transmission impairments (chromatic dispersion, polarization mode dispersion and phase noise) can be achieved. LÄS MER

  4. 3. Silicon photonics based MEMS tunable polarization rotator for optical communications

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Sandipan Das; [2016]
    Nyckelord :Silicon photonics; MEMS; Tunable polarization rotator; Polarization beam splitter; Kiselfotonik; MEMS; Flytande polarisationsrotator; polarisationsstr°aldelare;

    Sammanfattning : There has been a huge surge in data traffic all over the world due to the rise of streamingmedia services and connected devices. The current demand in data traffic has alreadypushed the optical fiber in the internet architecture to the network edges and the trend isto push it as close as possible, to the CPU. LÄS MER

  5. 4. Semi-filterless Optical Network : A Cost-efficient Passive Wide Area Network with Effective Resource Utilization

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Sahar Khanmohamadi; [2012]
    Nyckelord :;

    Sammanfattning : Two novel passive wide area network (WAN) approaches, filterless and semi-filterless optical networks, utilizing advanced optical coherent transmission and electrical compensation technologies are introduced. These approaches are able to eliminate or reduce the use of expensive active photonic reconfigurable components by interconnecting nodes with passive components. LÄS MER

  7. 5. Digital Pre-compensation of Chromatic Dispersion in QPSK high speed telecom systems

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Maria Sol Lidon; [2011]
    Nyckelord :;

    Sammanfattning : Chromatic dispersion (CD) is one of the most significant impairments in optical fiber communication systems. Since expensive and complex optical components are required to mitigate CD in the optical domain high-speed digital signal processing techniques are becoming an alternative to compensate electronically both non-linear and linear optical fiber degradations in the transmitter or receiver. LÄS MER