Improvement of SPM Tolerance for Phase-Modulated Duobinary Transmissions Using Phase Modulator with Postfiltering Technique

Yonggyoo Kim; Hodoek Jang; Jaehoon Lee; Inkyu Lee; Moonil Kim; Jichai Jeong

doi:10.1109/LPT.2003.819708

Improvement of SPM Tolerance for Phase-Modulated Duobinary Transmissions Using Phase Modulator with Postfiltering Technique

Yonggyoo Kim, Hodoek Jang, Jaehoon Lee, Inkyu Lee, Moonil Kim, Jichai Jeong

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We theoretically investigate self-phase modulation (SPM) tolerance of a new duobinary signals employed a phase modulator and optical filter, referred to as phase-modulated (PM) duobinary signals. For the conventional duobinary transmission (DBT) with electrical low-pass filters, fiber input power is strongly limited due to SPM. However, our results suggest that SPM tolerance can be improved while maintaining high dispersion tolerance using PM-DBT, since the signals with a constant power are transmitted over fibers. Adjusting the phase difference between mark and space levels of phase modulators, we can further improve SPM tolerance, compared with the conventional DBT.

Original language	English
Pages (from-to)	1785-1787
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	15
Issue number	12
DOIs	https://doi.org/10.1109/LPT.2003.819708
Publication status	Published - 2003 Dec

Bibliographical note

Funding Information:
Manuscript received March 17, 2003; revised July 8, 2003. This work was supported in part by the National Research Laboratory (NRL) programs in South Korea. The authors are with the Department of Radio Engineering, Korea University, Seoul 136-701, Korea. Digital Object Identifier 10.1109/LPT.2003.819708

Keywords

Duobinary
Modulation format
Optical communication
Simulation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2003.819708

Cite this

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title = "Improvement of SPM Tolerance for Phase-Modulated Duobinary Transmissions Using Phase Modulator with Postfiltering Technique",

abstract = "We theoretically investigate self-phase modulation (SPM) tolerance of a new duobinary signals employed a phase modulator and optical filter, referred to as phase-modulated (PM) duobinary signals. For the conventional duobinary transmission (DBT) with electrical low-pass filters, fiber input power is strongly limited due to SPM. However, our results suggest that SPM tolerance can be improved while maintaining high dispersion tolerance using PM-DBT, since the signals with a constant power are transmitted over fibers. Adjusting the phase difference between mark and space levels of phase modulators, we can further improve SPM tolerance, compared with the conventional DBT.",

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AU - Lee, Inkyu

AU - Kim, Moonil

AU - Jeong, Jichai

N1 - Funding Information: Manuscript received March 17, 2003; revised July 8, 2003. This work was supported in part by the National Research Laboratory (NRL) programs in South Korea. The authors are with the Department of Radio Engineering, Korea University, Seoul 136-701, Korea. Digital Object Identifier 10.1109/LPT.2003.819708

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N2 - We theoretically investigate self-phase modulation (SPM) tolerance of a new duobinary signals employed a phase modulator and optical filter, referred to as phase-modulated (PM) duobinary signals. For the conventional duobinary transmission (DBT) with electrical low-pass filters, fiber input power is strongly limited due to SPM. However, our results suggest that SPM tolerance can be improved while maintaining high dispersion tolerance using PM-DBT, since the signals with a constant power are transmitted over fibers. Adjusting the phase difference between mark and space levels of phase modulators, we can further improve SPM tolerance, compared with the conventional DBT.

AB - We theoretically investigate self-phase modulation (SPM) tolerance of a new duobinary signals employed a phase modulator and optical filter, referred to as phase-modulated (PM) duobinary signals. For the conventional duobinary transmission (DBT) with electrical low-pass filters, fiber input power is strongly limited due to SPM. However, our results suggest that SPM tolerance can be improved while maintaining high dispersion tolerance using PM-DBT, since the signals with a constant power are transmitted over fibers. Adjusting the phase difference between mark and space levels of phase modulators, we can further improve SPM tolerance, compared with the conventional DBT.

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KW - Modulation format

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KW - Simulation

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Improvement of SPM Tolerance for Phase-Modulated Duobinary Transmissions Using Phase Modulator with Postfiltering Technique

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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