Channel pre-emphasis equalization for a 270 km 40 × 40 Gbit/s WDM system

Aiying Yang; Yaojun Qiao; Yu Nan Sun

doi:10.1002/mop.23450

Channel pre-emphasis equalization for a 270 km 40 × 40 Gbit/s WDM system

Aiying Yang^*, Yaojun Qiao, Yu Nan Sun

^*Corresponding author for this work

School of Optics and Photonics

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

Abstract

Optical channel pre-emphasis equalization is experimentally researched for a 270 km 40 × 40 Gbit/s WDM transmission system with three EDFAs concatenated as booster amplifier. The channel imbalance of the overall system changes with different sets of power launched into EDFAs. Appropriately choosing the power input to concatenated EDFAs can make the output spectrum of 40-channel signal be equalized to the most extent. The merit of benefit can be around 5.5 dB by this pre-emphasis equalization. The requirement for the gain equalizer is therefore greatly released although still necessary. To take the channel imbalance of transmitter signal into account, the gain imbalance of the overall system almost matches the power imbalance of 40 channels, but the significant difference lies at some channels. Finally, the pump power into Raman amplifier is also optimized and another 1.3-dB improvement of channel balance can be further achieved.

Original language	English
Pages (from-to)	1632-1634
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	50
Issue number	6
DOIs	https://doi.org/10.1002/mop.23450
Publication status	Published - Jun 2008

Keywords

Channel imbalance
Dense wavelength multiplexing
Erbium-doped fiber amplifier
Gain equalizer
Optical signal to noise ratio

Access to Document

10.1002/mop.23450

Cite this

@article{7211c80647a34206acf09d0aba20446c,

title = "Channel pre-emphasis equalization for a 270 km 40 × 40 Gbit/s WDM system",

abstract = "Optical channel pre-emphasis equalization is experimentally researched for a 270 km 40 × 40 Gbit/s WDM transmission system with three EDFAs concatenated as booster amplifier. The channel imbalance of the overall system changes with different sets of power launched into EDFAs. Appropriately choosing the power input to concatenated EDFAs can make the output spectrum of 40-channel signal be equalized to the most extent. The merit of benefit can be around 5.5 dB by this pre-emphasis equalization. The requirement for the gain equalizer is therefore greatly released although still necessary. To take the channel imbalance of transmitter signal into account, the gain imbalance of the overall system almost matches the power imbalance of 40 channels, but the significant difference lies at some channels. Finally, the pump power into Raman amplifier is also optimized and another 1.3-dB improvement of channel balance can be further achieved.",

keywords = "Channel imbalance, Dense wavelength multiplexing, Erbium-doped fiber amplifier, Gain equalizer, Optical signal to noise ratio",

author = "Aiying Yang and Yaojun Qiao and Sun, {Yu Nan}",

year = "2008",

month = jun,

doi = "10.1002/mop.23450",

language = "English",

volume = "50",

pages = "1632--1634",

journal = "Microwave and Optical Technology Letters",

issn = "0895-2477",

publisher = "John Wiley & Sons Inc.",

number = "6",

}

TY - JOUR

T1 - Channel pre-emphasis equalization for a 270 km 40 × 40 Gbit/s WDM system

AU - Yang, Aiying

AU - Qiao, Yaojun

AU - Sun, Yu Nan

PY - 2008/6

Y1 - 2008/6

N2 - Optical channel pre-emphasis equalization is experimentally researched for a 270 km 40 × 40 Gbit/s WDM transmission system with three EDFAs concatenated as booster amplifier. The channel imbalance of the overall system changes with different sets of power launched into EDFAs. Appropriately choosing the power input to concatenated EDFAs can make the output spectrum of 40-channel signal be equalized to the most extent. The merit of benefit can be around 5.5 dB by this pre-emphasis equalization. The requirement for the gain equalizer is therefore greatly released although still necessary. To take the channel imbalance of transmitter signal into account, the gain imbalance of the overall system almost matches the power imbalance of 40 channels, but the significant difference lies at some channels. Finally, the pump power into Raman amplifier is also optimized and another 1.3-dB improvement of channel balance can be further achieved.

AB - Optical channel pre-emphasis equalization is experimentally researched for a 270 km 40 × 40 Gbit/s WDM transmission system with three EDFAs concatenated as booster amplifier. The channel imbalance of the overall system changes with different sets of power launched into EDFAs. Appropriately choosing the power input to concatenated EDFAs can make the output spectrum of 40-channel signal be equalized to the most extent. The merit of benefit can be around 5.5 dB by this pre-emphasis equalization. The requirement for the gain equalizer is therefore greatly released although still necessary. To take the channel imbalance of transmitter signal into account, the gain imbalance of the overall system almost matches the power imbalance of 40 channels, but the significant difference lies at some channels. Finally, the pump power into Raman amplifier is also optimized and another 1.3-dB improvement of channel balance can be further achieved.

KW - Channel imbalance

KW - Dense wavelength multiplexing

KW - Erbium-doped fiber amplifier

KW - Gain equalizer

KW - Optical signal to noise ratio

UR - http://www.scopus.com/inward/record.url?scp=43049106880&partnerID=8YFLogxK

U2 - 10.1002/mop.23450

DO - 10.1002/mop.23450

M3 - Article

AN - SCOPUS:43049106880

SN - 0895-2477

VL - 50

SP - 1632

EP - 1634

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

IS - 6

ER -

Channel pre-emphasis equalization for a 270 km 40 × 40 Gbit/s WDM system

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this