BIMA phaselock system distribution on optical fiber
  • block diagram: linelength.pdf

  • phase noise measurements

    results of phase noise tests
    reference signal sent to receiver through... optical power
    at photodiode
    Psig/Pnoise phi_rms screen dump
    coax -- 16.2 dB .110 radians  scren021.gif
    2.2 km optical fiber -1.6 dBm 15.7 dB .116 radians  scren038.gif
    2.2 km optical fiber -6 dBm 15.2 dB .123 radians  scren037.gif
    2.2 km optical fiber -9 dBm 13.8 dB .145 radians  scren036.gif

    linelength measurement

  • hardware block diagram:  linelength.pdf