Title :
Impact of Mechanical Vibrations on Laser Stability and Carrier Phase Estimation in Coherent Receivers
Author :
Kuschnerov, Maxim ; Piyawanno, Kittipong ; Alfiad, Mohammad S. ; Spinnler, Bernhard ; Napoli, Antonio ; Lankl, Berthold
Author_Institution :
Univ. of the Fed. Armed Forces Munich, Neubiberg, Germany
Abstract :
Coherent communication systems are largely limited by the laser linewidth of the local oscillator. In addition to phase noise, large frequency deviations can occur if the laser is mechanically vibrated. The detrimental effect of the frequency instability is measured for coherent optical receivers on a typical laser and numerically analyzed for quadrature phase-shift keying and 16-quadrature amplitude modulation using common feed-forward carrier phase recovery algorithms.
Keywords :
laser stability; optical receivers; quadrature amplitude modulation; quadrature phase shift keying; vibrations; carrier phase estimation; coherent optical receiver; coherent receivers; feed forward carrier phase recovery algorithm; frequency deviation; laser linewidth; laser stability; local oscillator; mechanical vibrations; phase noise; quadrature amplitude modulation; quadrature phase shift keying; Carrier phase estimation; coherent systems; laser; local oscillator; vibration;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2050472
