Improve the performance of orthogonal ASK/DPSK optical label switching by DC-balanced line encoding

Author

Chi, Nan ; Xu, Lin ; Zhang, Jianfeng ; Holm-Nielsen, Pablo V. ; Peucheret, Christophe ; Yu, Siyuan ; Jeppesen, Palle

Author_Institution

Res. Center COM, Tech. Univ. of Denmark, Lyngby

Volume

24

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

1082

Lastpage

1092

Abstract

Orthogonal amplitude shift keying/differential phase-shift keying (ASK/DPSK) labeling is a promising approach to ultrahigh packet-rate routing and forwarding in the optical layer. However, the limitation on the payload extinction ratio (ER) is a detrimental effect for network scalability and transparency. This paper presents theoretical and experimental studies of ASK/DPSK labeling. It proposes that dc-balanced 8B10B coding can greatly improve ER tolerance, which in turn leads to better system performance. By using the 8B10B coding method, the paper demonstrates transmission and optical label swapping for a 40 Gb/s ASK payload and a 2.5 Gb/s DPSK label with an overall power penalty of 3.3 dB for the payload and 0.3 dB for the label. The experimental results also show that the ER is allowed to be as high as 12 dB

Keywords

amplitude shift keying; differential phase shift keying; encoding; optical fibre networks; telecommunication network routing; transparency; 2.5 Gbit/s; 40 Gbit/s; 8B10B coding; ASK labeling; DC-balanced line encoding; DPSK labeling; ER tolerance; amplitude shift keying; differential phase-shift keying; network scalability; network transparency; optical label swapping; optical label switching; optical layer; optical transmission; orthogonal ASK; orthogonal DPSK; payload extinction ratio; ultrahigh packet-rate forwarding; ultrahigh packet-rate routing; Amplitude shift keying; Differential phase shift keying; Differential quadrature phase shift keying; Encoding; Erbium; Extinction ratio; Labeling; Payloads; Routing; Scalability; Amplitude shift keying; differential phase shift keying; optical label switching; orthogonal modulation;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2005.863274

Filename

1605309