Sökning: "OTDR"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet OTDR.

  1. 1. Quantum Espionage

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Carlo Ninic Svensson; [2023]
    Nyckelord :Quantum Nano Photonics; SNSPD; OTDR; Nano Kvantfotonik; SNSPD; OTDR;

    Sammanfattning : This thesis investigates the security of optical fiber communication and demonstrates the feasibility of eavesdropping using different tapping methods and superconducting nanowire single-photon detectors (SNSPDs). Methods for surveillance against fiber intrusion are also investigated. LÄS MER

  3. 2. Live 3D imaging quantum LiDAR

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Theodor Staffas; [2021]
    Nyckelord :lidar; otdr; snspd; lidar; otdr; snspd;

    Sammanfattning : In this thesis, I demonstrate a single­photon Light Detection And Ranging, (LiDAR)system operating at 1550 nm capable of reconstructing 3D environments live withmm resolution at a rate of 400 points per second using eye­safe laser pulses. Thesystem was built using off­-the-­shelf optical components and analysis was performedusing open-­source software. LÄS MER

  4. 3. Impact of OTDR Monitoring on Optical Data Traffic

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Wera Mauritz; [2020]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 4. Distributed Temperature Sensing Using Phase-Sensitive Optical Time Domain Reflectometry

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Simon Ek; [2020]
    Nyckelord :Applied physics; Distributed optical fiber sensing; Rayleigh scattering; OTDR; phase-OTDR; Temperature; Refractive index; Strain; Correlation; RISE; Single mode fiber; SMF; Tillämpad fysik; Distribuerad optisk fibermätning; Rayleigh-spridning; OTDR; phase-OTDR; Temperatur; Brytningsindex; Töjning; RISE; Korrelation; Singelmodfiber; SMF;

    Sammanfattning : This thesis explores and evaluates the temperature measuring capabilities of a phase-sensitive optical time-domain reflectometer (φ-OTDR), which exploits Rayleigh backscattering in normal single mode optical fibers. The device is constructed and its setup explained, and a protocol for making temperature measurements with it is developed. LÄS MER

  7. 5. Optimization and Miniaturization of a Fiber-Optic ф-OTDR Distributed Vibration Sensor

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Ola Sjölander; [2018]
    Nyckelord :;

    Sammanfattning : .... LÄS MER