Phase-balanced differential vector modulation by laser and electroabsorption modulator

Phase-balanced differential vector modulation by laser and electroabsorption modulator

© 2017 IEEE. Directly modulated laser can be used as phase modulator due to chirp effect. However, accompanying amplitude modulation also results. By using EA Modulator in combination, light amplitude may be compensated enabling both amplitude and phase modulation of lightwave, which is an alternati...

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Main Authors: Praimezt Mekbungwan, Ukrit Mankong, Keizo Inagaki, Tetsuya Kawanishi
Format: Conference Proceeding
Published: 2018
Subjects:
Materials Science
Physics and Astronomy
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85045982230&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/57465
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-574652018-09-05T03:52:17Z Phase-balanced differential vector modulation by laser and electroabsorption modulator Praimezt Mekbungwan Ukrit Mankong Keizo Inagaki Tetsuya Kawanishi Materials Science Physics and Astronomy © 2017 IEEE. Directly modulated laser can be used as phase modulator due to chirp effect. However, accompanying amplitude modulation also results. By using EA Modulator in combination, light amplitude may be compensated enabling both amplitude and phase modulation of lightwave, which is an alternative method to conventional IQ modulator. Since light phase is proportional to intensity, we propose cumulative phasebalance coding to solve the limitation in the laser operating range for differential M-PSK and M-QAM modulation. The technique applies parallel DC-balance coding with phase-balance symbol mapping. The cumulative phase in high-order differential modulation is always bounded, it is for the first time, to our knowledge. 2018-09-05T03:41:58Z 2018-09-05T03:41:58Z 2017-12-05 Conference Proceeding 2-s2.0-85045982230 10.1109/MWP.2017.8168722 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85045982230&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57465
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Materials Science
Physics and Astronomy
spellingShingle Materials Science
Physics and Astronomy
Praimezt Mekbungwan
Ukrit Mankong
Keizo Inagaki
Tetsuya Kawanishi
Phase-balanced differential vector modulation by laser and electroabsorption modulator
description © 2017 IEEE. Directly modulated laser can be used as phase modulator due to chirp effect. However, accompanying amplitude modulation also results. By using EA Modulator in combination, light amplitude may be compensated enabling both amplitude and phase modulation of lightwave, which is an alternative method to conventional IQ modulator. Since light phase is proportional to intensity, we propose cumulative phasebalance coding to solve the limitation in the laser operating range for differential M-PSK and M-QAM modulation. The technique applies parallel DC-balance coding with phase-balance symbol mapping. The cumulative phase in high-order differential modulation is always bounded, it is for the first time, to our knowledge.
format Conference Proceeding
author Praimezt Mekbungwan
Ukrit Mankong
Keizo Inagaki
Tetsuya Kawanishi
author_facet Praimezt Mekbungwan
Ukrit Mankong
Keizo Inagaki
Tetsuya Kawanishi
author_sort Praimezt Mekbungwan
title Phase-balanced differential vector modulation by laser and electroabsorption modulator
title_short Phase-balanced differential vector modulation by laser and electroabsorption modulator
title_full Phase-balanced differential vector modulation by laser and electroabsorption modulator
title_fullStr Phase-balanced differential vector modulation by laser and electroabsorption modulator
title_full_unstemmed Phase-balanced differential vector modulation by laser and electroabsorption modulator
title_sort phase-balanced differential vector modulation by laser and electroabsorption modulator
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85045982230&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/57465
_version_ 1681424883976765440

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