Novel and simple model of 10-Gb/s electroabsorption modulated lasers and its experimental validation of transmission performance due to overshoot of optical signals

Yongyoo Kim; Seungki Nam; Soonkyu Park; Sungwon Lee; Donghoon Jang; H. S. Kang; Jichai Jeong

doi:10.1109/LPT.2003.810247

Novel and simple model of 10-Gb/s electroabsorption modulated lasers and its experimental validation of transmission performance due to overshoot of optical signals

Yongyoo Kim, Seungki Nam, Soonkyu Park, Sungwon Lee, Donghoon Jang, H. S. Kang, Jichai Jeong

Department of Brain and Cognitive Engineering

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

1 Citation (Scopus)

Abstract

We have experimentally and theoretically investigated the transmission performance of 10-Gb/s electroabsorption modulated lasers (EMLs) due to the overshoot of optical pulses. When a highly negative bias voltage is applied to EMLs, the overshoot becomes larger due to nonlinear transfer curves of EMLs. In order to further understand the overshoot effect of optical pulses from EMLs on transmission performance, we propose a novel and simple EML model based on the frequency response (magnitude and phase) and the transfer curves (P-V and α-V) of EMLs. Although the model does not solve the rate equations and the wave equations, it can accurately predict output pulse shapes and the frequency chirp as well as the transmission performance with reducing simulation time. Using the EML model, we can calculate the overshoot and dispersion power penalty due to modulation bandwidth and group delay difference in 10-Gb/s EMLs. Our results suggest that the overshoot should be considered to accurately predict the transmission performance of 10-Gb/s EMLs.

Original language	English
Pages (from-to)	643-645
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	15
Issue number	5
DOIs	https://doi.org/10.1109/LPT.2003.810247
Publication status	Published - 2003 May

Keywords

Chirp modulation
Digital modulation
Electroabsorption
Optical fiber communications
Optoelectronic devices
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.2003.810247

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title = "Novel and simple model of 10-Gb/s electroabsorption modulated lasers and its experimental validation of transmission performance due to overshoot of optical signals",

abstract = "We have experimentally and theoretically investigated the transmission performance of 10-Gb/s electroabsorption modulated lasers (EMLs) due to the overshoot of optical pulses. When a highly negative bias voltage is applied to EMLs, the overshoot becomes larger due to nonlinear transfer curves of EMLs. In order to further understand the overshoot effect of optical pulses from EMLs on transmission performance, we propose a novel and simple EML model based on the frequency response (magnitude and phase) and the transfer curves (P-V and α-V) of EMLs. Although the model does not solve the rate equations and the wave equations, it can accurately predict output pulse shapes and the frequency chirp as well as the transmission performance with reducing simulation time. Using the EML model, we can calculate the overshoot and dispersion power penalty due to modulation bandwidth and group delay difference in 10-Gb/s EMLs. Our results suggest that the overshoot should be considered to accurately predict the transmission performance of 10-Gb/s EMLs.",

keywords = "Chirp modulation, Digital modulation, Electroabsorption, Optical fiber communications, Optoelectronic devices, Simulation",

author = "Yongyoo Kim and Seungki Nam and Soonkyu Park and Sungwon Lee and Donghoon Jang and Kang, {H. S.} and Jichai Jeong",

note = "Funding Information: Manuscript received September 30, 2002; revised February 10, 2003. This work was supported in part by the National Research Laboratory Program, by the BK21 Program, and by Electronics and Telecommunications Research Institute in Korea. Y. Kim, S. Nam, S. Park, and J. Jeong are with the Department of Radio Engineering, Korea University, Seoul 136-701, Korea. S. Lee and D. Jang are with the Optoelectronics Division, Samsung Electronics, Suwon 440-600, Korea. H. S. Kang is with the Gwangju/Jeonnam Research Center, Electronics and Telecommunications Research Institute, Gwangju 500-712, Korea. Digital Object Identifier 10.1109/LPT.2003.810247",

year = "2003",

month = may,

doi = "10.1109/LPT.2003.810247",

language = "English",

volume = "15",

pages = "643--645",

journal = "IEEE Photonics Technology Letters",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5",

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AU - Kim, Yongyoo

AU - Nam, Seungki

AU - Park, Soonkyu

AU - Lee, Sungwon

AU - Jang, Donghoon

AU - Kang, H. S.

AU - Jeong, Jichai

N1 - Funding Information: Manuscript received September 30, 2002; revised February 10, 2003. This work was supported in part by the National Research Laboratory Program, by the BK21 Program, and by Electronics and Telecommunications Research Institute in Korea. Y. Kim, S. Nam, S. Park, and J. Jeong are with the Department of Radio Engineering, Korea University, Seoul 136-701, Korea. S. Lee and D. Jang are with the Optoelectronics Division, Samsung Electronics, Suwon 440-600, Korea. H. S. Kang is with the Gwangju/Jeonnam Research Center, Electronics and Telecommunications Research Institute, Gwangju 500-712, Korea. Digital Object Identifier 10.1109/LPT.2003.810247

PY - 2003/5

Y1 - 2003/5

N2 - We have experimentally and theoretically investigated the transmission performance of 10-Gb/s electroabsorption modulated lasers (EMLs) due to the overshoot of optical pulses. When a highly negative bias voltage is applied to EMLs, the overshoot becomes larger due to nonlinear transfer curves of EMLs. In order to further understand the overshoot effect of optical pulses from EMLs on transmission performance, we propose a novel and simple EML model based on the frequency response (magnitude and phase) and the transfer curves (P-V and α-V) of EMLs. Although the model does not solve the rate equations and the wave equations, it can accurately predict output pulse shapes and the frequency chirp as well as the transmission performance with reducing simulation time. Using the EML model, we can calculate the overshoot and dispersion power penalty due to modulation bandwidth and group delay difference in 10-Gb/s EMLs. Our results suggest that the overshoot should be considered to accurately predict the transmission performance of 10-Gb/s EMLs.

AB - We have experimentally and theoretically investigated the transmission performance of 10-Gb/s electroabsorption modulated lasers (EMLs) due to the overshoot of optical pulses. When a highly negative bias voltage is applied to EMLs, the overshoot becomes larger due to nonlinear transfer curves of EMLs. In order to further understand the overshoot effect of optical pulses from EMLs on transmission performance, we propose a novel and simple EML model based on the frequency response (magnitude and phase) and the transfer curves (P-V and α-V) of EMLs. Although the model does not solve the rate equations and the wave equations, it can accurately predict output pulse shapes and the frequency chirp as well as the transmission performance with reducing simulation time. Using the EML model, we can calculate the overshoot and dispersion power penalty due to modulation bandwidth and group delay difference in 10-Gb/s EMLs. Our results suggest that the overshoot should be considered to accurately predict the transmission performance of 10-Gb/s EMLs.

KW - Chirp modulation

KW - Digital modulation

KW - Electroabsorption

KW - Optical fiber communications

KW - Optoelectronic devices

KW - Simulation

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EP - 645

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 5

ER -

Novel and simple model of 10-Gb/s electroabsorption modulated lasers and its experimental validation of transmission performance due to overshoot of optical signals

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