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Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator

Laser phase noise tolerance in direct detection optical orthogonal frequency division multiplexing (OFDM) transmission system is experimentally demonstrated using laser linewidth emulator. With this linewidth emulator, the linewidth of the laser can be broadened independently without inducing other...

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Main Authors: Ali, Younus Nidham, Zan, Zuraidah
Format: Article
Language:English
Published: Institute of Electrical and Electronics Engineers 2017
Online Access:http://psasir.upm.edu.my/id/eprint/62285/1/08080153.pdf
http://psasir.upm.edu.my/id/eprint/62285/
https://ieeexplore.ieee.org/document/8080153
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spelling my.upm.eprints.622852019-10-30T06:01:18Z http://psasir.upm.edu.my/id/eprint/62285/ Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator Ali, Younus Nidham Zan, Zuraidah Laser phase noise tolerance in direct detection optical orthogonal frequency division multiplexing (OFDM) transmission system is experimentally demonstrated using laser linewidth emulator. With this linewidth emulator, the linewidth of the laser can be broadened independently without inducing other laser's noise characteristics such as relative intensity noise and chirping. The results show the effect of phase-to-intensity noise conversion due to the laser's phase noise and chromatic dispersion. This induces noise pedestals not only onto the optical carrier, but also to each of the subcarriers, and thus produces intersubcarriers interference. Measurements show 6 dB Q-degradation is suffered by the system when 10 MHz linewidth is used as compared to using narrowest emulator linewidth of 256 kHz. Transmission with the linewidth emulator set to 20 MHz is also shown where it can still be tolerated by 400 km of fiber at the Q of 9.606 dB with respect to $1.6\,\times \,10^{{\rm - 3}}$ bit error rate. Simulation of 16 quadratic-amplitude modulation (QAM) (∼128 Gb/s) and 4 QAM (∼100 Gb/s) using VPItransmissionMaker are also presented to demonstrate the effect of carrier's phase-to-intensity noise conversion when a high data rate and wide OFDM signal bandwidth are used with the linewidth emulator as the system's laser source. The results show that a phase rotation term is insignificant for lower M -size QAM with fiber length less than 500 km. This presents the high effectiveness and reliability of the laser linewidth emulator to discretely determine an independent phase noise tolerance from the other laser's noise characteristics in the optical OFDM transmission system. Institute of Electrical and Electronics Engineers 2017-12 Article NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/62285/1/08080153.pdf Ali, Younus Nidham and Zan, Zuraidah (2017) Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator. IEEE Photonics Journal, 9 (6). pp. 1-15. ISSN 1943-0655 https://ieeexplore.ieee.org/document/8080153 10.1109/JPHOT.2017.2765179
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Laser phase noise tolerance in direct detection optical orthogonal frequency division multiplexing (OFDM) transmission system is experimentally demonstrated using laser linewidth emulator. With this linewidth emulator, the linewidth of the laser can be broadened independently without inducing other laser's noise characteristics such as relative intensity noise and chirping. The results show the effect of phase-to-intensity noise conversion due to the laser's phase noise and chromatic dispersion. This induces noise pedestals not only onto the optical carrier, but also to each of the subcarriers, and thus produces intersubcarriers interference. Measurements show 6 dB Q-degradation is suffered by the system when 10 MHz linewidth is used as compared to using narrowest emulator linewidth of 256 kHz. Transmission with the linewidth emulator set to 20 MHz is also shown where it can still be tolerated by 400 km of fiber at the Q of 9.606 dB with respect to $1.6\,\times \,10^{{\rm - 3}}$ bit error rate. Simulation of 16 quadratic-amplitude modulation (QAM) (∼128 Gb/s) and 4 QAM (∼100 Gb/s) using VPItransmissionMaker are also presented to demonstrate the effect of carrier's phase-to-intensity noise conversion when a high data rate and wide OFDM signal bandwidth are used with the linewidth emulator as the system's laser source. The results show that a phase rotation term is insignificant for lower M -size QAM with fiber length less than 500 km. This presents the high effectiveness and reliability of the laser linewidth emulator to discretely determine an independent phase noise tolerance from the other laser's noise characteristics in the optical OFDM transmission system.
format Article
author Ali, Younus Nidham
Zan, Zuraidah
spellingShingle Ali, Younus Nidham
Zan, Zuraidah
Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator
author_facet Ali, Younus Nidham
Zan, Zuraidah
author_sort Ali, Younus Nidham
title Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator
title_short Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator
title_full Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator
title_fullStr Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator
title_full_unstemmed Laser phase noise tolerance in direct detection optical OFDM transmission using laser linewidth emulator
title_sort laser phase noise tolerance in direct detection optical ofdm transmission using laser linewidth emulator
publisher Institute of Electrical and Electronics Engineers
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/62285/1/08080153.pdf
http://psasir.upm.edu.my/id/eprint/62285/
https://ieeexplore.ieee.org/document/8080153
_version_ 1651869084643491840
score 13.211869

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