A Novel in-Band OSNR Measurement Method Based on Normalized Autocorrelation Function

A Novel in-Band OSNR Measurement Method Based on Normalized Autocorrelation Function

We propose and experimentally demonstrate a novel in-band optical signal-to-noise 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...

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Bibliographic Details
Main Authors: Zhuili Huang, Jifang Qiu, Deming Kong, Ye Tian, Yan Li, Hongxiang Guo, Xiaobin Hong, Jian Wu
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Photonics Journal
Subjects:
Flexible channel spacing
normalized autocorrelation function
optical signal to noise ratio (OSNR)
Wiener–Khinchin theorem
Online Access:https://ieeexplore.ieee.org/document/7954597/
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Summary:We propose and experimentally demonstrate a novel in-band optical signal-to-noise 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&#x00A0;dB from &#x2212;15 to 22&#x00A0;dB with error less than <inline-formula><tex-math notation="LaTeX">$ \pm 0.5$</tex-math></inline-formula>&#x00A0;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.
ISSN:1943-0655

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