Reduction of Rayleigh backscattered noise in bidirectional optical access link using Lorentzian-weight-functioned adaptive derivative equalization

This paper introduces a technique to mitigate the Rayleigh backscattered (RB) noise generated in optical access links. Based on digital signal processing (DSP), the proposed technique reduces RB noise by utilizing the Lorentzian distribution function as a weighting function and leveraging the proper...

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Bibliographic Details
Published in:Optical and quantum electronics 2023-11, Vol.55 (11), Article 999
Main Author: Won, Yong-Yuk
Format: Article
Language:English
Subjects:
Backscattering
Bit error rate
Characterization and Evaluation of Materials
Computer Communication Networks
Digital signal processing
Distribution functions
Electrical Engineering
Error correction
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Signal to noise ratio
Waveforms
Weighting functions
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Summary:This paper introduces a technique to mitigate the Rayleigh backscattered (RB) noise generated in optical access links. Based on digital signal processing (DSP), the proposed technique reduces RB noise by utilizing the Lorentzian distribution function as a weighting function and leveraging the property that the derivative of an analog waveform is significantly greater than that of a digital waveform. The experimental results confirm that the proposed technique yields an input signal-to-noise ratio (SNR) gain of 4 dB. An observed reduction of 4-dB in power penalty is achieved based on the 1st generation forward error correction (GFEC) bit error rate (BER) threshold when utilizing the proposed technique. Thus, based on the significant experimental results, it is confirmed that the proposed technique is highly effective in reducing RB noise.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-023-05263-0