Open AccessBandpass sampling in heterodyne receivers for coherent optical access networks
Author(s) -
P. Bakopoulos,
Stefanos Dris,
Bernhard Schrenk,
Ioannis Lazarou,
H. Avramopoulos
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.029404
Subject(s) - heterodyne detection , computer science , bandwidth (computing) , heterodyne (poetry) , electronic engineering , optical communication , passive optical network , wavelength division multiplexing , optical performance monitoring , optics , band pass filter , digital signal processing , sampling (signal processing) , telecommunications , physics , computer hardware , engineering , laser , detector , wavelength , acoustics
A novel digital receiver architecture for coherent heterodyne-detected optical signals is presented. It demonstrates the application of bandpass sampling in an optical communications context, to overcome the high sampling rate requirement of conventional receivers (more than twice the signal bandwidth). The concept is targeted for WDM coherent optical access networks, where applying heterodyne detection constitutes a promising approach to reducing optical hardware complexity. The validity of the concept is experimentally assessed in a 76 km WDM-PON scenario, where the developed DSP achieves a 50% ADC rate reduction with penalty-free operation.