Title :
Phase noise performance of the multilevel interferometric direct detection receivers
Author :
Kuzmin, Konstantin G. ; Richter, André ; Koltchanov, Igor ; Louchet, Hadrien ; Karelin, Nikolay
Author_Institution :
VPI Dev. Center, Minsk, Belarus
Abstract :
We analyze the phase noise contribution to the photocurrent of the multilevel direct detection receiver based on delay line interferometer (DLI) and balanced photodetector. We show that the phase noise influence in multilevel systems is much stronger compared to that in binary systems as a result of the DLI configuration. The characteristic function of the photocurrent is derived for arbitrary-delay line interferometer configuration, balanced photodetector, and post-detection low-pass filter. The characteristic function is used to estimate the symbol error rate of a D8PSK system. The results are validated by Monte-Carlo simulations.
Keywords :
Monte Carlo methods; error statistics; light interferometry; low-pass filters; optical filters; optical modulation; optical noise; optical receivers; phase noise; phase shift keying; photodetectors; D8PSK system; DLI configuration; Monte Carlo simulations; arbitrary delay line interferometer configuration; balanced photodetector; binary systems; characteristic function; multilevel interferometric direct detection receivers; phase noise performance; post detection low pass filter; symbol error rate; Modulation; Optical filters; Optical noise; Optical transmitters; Phase noise; Photoconductivity; Receivers; DPSK; direct detection; multilevel modulation; optical receivers; phase noise;
Conference_Titel :
Transparent Optical Networks (ICTON), 2012 14th International Conference on
Conference_Location :
Coventry
Print_ISBN :
978-1-4673-2228-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2012.6253736
