Open AccessA Novel in-Band OSNR Measurement Method Based on Normalized Autocorrelation Function
Author(s) -
Zhuili Huang,
Jifang Qiu,
Deming Kong,
Ye Tian,
Yan Li,
Hongxiang Guo,
Xiaobin Hong,
Jian Wu
Publication year - 2018
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2017.2717847
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
We propose and experimentally demonstrate a novel in-band optical signal-tonoise ratio (OSNR) measurement method based on normalized autocorrelation function. Experimental results indicate that OSNR of four-channel 32-Gbaud pulse-duration modulation-QPSK wavelength-division-multiplexing signals is precisely measured with applicability to flexible channel spacing. The measurement range is 37 dB from -15 to 22 dB with error less than ±0.5 dB. The proposed method is also robust to bit rate, modulation format, chromatic dispersion, and input optical power. Besides, the choice of delay in calculation of normalized autocorrelation function is flexible from 1.6 to 30 ps.