Open AccessAccurate model to predict performance of coherent optical transponder for high baud rate and advanced modulation format
Author(s) -
Qiang Wang,
Yang Yue,
Xuan He,
Andre Vovan,
Jon Anderson
Publication year - 2018
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.26.012970
Subject(s) - baud , transponder (aeronautics) , bit error rate , quadrature amplitude modulation , computer science , electronic engineering , optics , modulation (music) , phase shift keying , transmission (telecommunications) , physics , telecommunications , channel (broadcasting) , engineering , acoustics , meteorology
Bit error rate (BER) versus optical signal to noise ratio (OSNR) characteristics determines the transmission performance for coherent optical transponder. We have developed a model to predict BER versus OSNR at various receiver optical power (ROP). The model has three parameters, which are related to BER noise floor, filter mismatching, and OSNR value without noise loading. The model is applied to high baud rate and quadrature amplitude modulation (QAM) transponders. By considering the influence of baud rate on the fitting parameters, accurate prediction of performance for coherent transponder can be achieved over various baud rates. Novel applications enabled by this model include in-field measurement of BER versus OSNR, simple abstraction of coherent transponder, accurate OSNR monitor and coherent optical channel monitor.