Reduction of amplified spontaneous emission noise using a statistical signal adaptive filter

Journal Article · Wed May 15 04:00:00 EDT 2019 · Optical and Quantum Electronics

DOI:https://doi.org/10.1007/S11082-019-1844-6· OSTI ID:22950300

Won, Yong-Yuk ^[1]; Yoon, Sang Min ^[2]; Seo, Dongsun ^[1]

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1. Myongji University, Department of Electronic Engineering (Korea, Republic of)
2. Kookmin University, College of Computer Science (Korea, Republic of)

This paper proposes a statistical signal adaptive filter (SSAF) based on adaptive total variation to reduce amplified spontaneous emission (ASE) noise in optical amplifiers, e.g. erbium doped fiber amplifiers. Non-return-to-zero on–off keying signal to noise ratio (SNR) is degraded by ASE noise. However, this can be improved by squeezing ASE using the proposed SSAF after photodetection to effectively remove the noise by analyzing the signal movement statistically. We obtained 4-dB SNR gain by reducing ASE beat noise compared with not applying SSAF. Simultaneous optical bandpass filter and SSAF application reduced the 2-dB power penalty for a 20-km optical link more than when only SSAF was used.

• OSTI ID: 22950300
• Journal Information: Optical and Quantum Electronics, Journal Name: Optical and Quantum Electronics Journal Issue: 5 Vol. 51; ISSN OQELDI; ISSN 0306-8919
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMPLIFIERS
DOPED MATERIALS
ERBIUM
FIBERS
GAIN
NOISE
SIGNAL-TO-NOISE RATIO
SIGNALS