Improvement of power margin in 10-Gb/s SOA-boosted transmission systems using phase-modulated duobinary modulation formats

Yonggyoo Kim; Yongnoh Lee; Jaehoon Lee; Sungki Kim; Jichai Jeong

doi:10.1109/LPT.2004.833939

Improvement of power margin in 10-Gb/s SOA-boosted transmission systems using phase-modulated duobinary modulation formats

Yonggyoo Kim, Yongnoh Lee, Jaehoon Lee, Sungki Kim, Jichai Jeong

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

4 Citations (Scopus)

Abstract

We theoretically investigate the performance of 10-Gb/s semiconductor optical amplifier (SOA)-boosted transmission systems using the nonreturn-to-zero (NRZ), conventional duobinary, and phase-modulated (PM)-duobinary modulation formats. NRZ and conventional duobinary modulation formats are based on the intensity modulation. When the NRZ and conventional duobinary modulation formats are used, the nonlinear characteristics of SOA severely distort the signals. On the other hand, the PM-duobinary modulation format is based on differential binary phase-shift-keying modulation. When the PM-duobinary modulation format is employed, the nonlinear characteristics of SOA scarcely affect the signals which maintain a constant intensity in SOAs. Using the PM-duobinary modulation format, we can significantly improve the power margin in SOA-boosted transmission systems.

Original language	English
Pages (from-to)	2377-2379
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	16
Issue number	10
DOIs	https://doi.org/10.1109/LPT.2004.833939
Publication status	Published - 2004 Oct

ASJC Scopus subject areas

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

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title = "Improvement of power margin in 10-Gb/s SOA-boosted transmission systems using phase-modulated duobinary modulation formats",

abstract = "We theoretically investigate the performance of 10-Gb/s semiconductor optical amplifier (SOA)-boosted transmission systems using the nonreturn-to-zero (NRZ), conventional duobinary, and phase-modulated (PM)-duobinary modulation formats. NRZ and conventional duobinary modulation formats are based on the intensity modulation. When the NRZ and conventional duobinary modulation formats are used, the nonlinear characteristics of SOA severely distort the signals. On the other hand, the PM-duobinary modulation format is based on differential binary phase-shift-keying modulation. When the PM-duobinary modulation format is employed, the nonlinear characteristics of SOA scarcely affect the signals which maintain a constant intensity in SOAs. Using the PM-duobinary modulation format, we can significantly improve the power margin in SOA-boosted transmission systems.",

author = "Yonggyoo Kim and Yongnoh Lee and Jaehoon Lee and Sungki Kim and Jichai Jeong",

year = "2004",

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AU - Lee, Yongnoh

AU - Lee, Jaehoon

AU - Kim, Sungki

AU - Jeong, Jichai

PY - 2004/10

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