Optical packet switching for WDM high speed backbones

The concept of burst switching was initially proposed in the context of voice communications by Haselton (1983) and Amstutz (1983, 1989) in the early 1980s. More recently, in the late 1990s, optical burst switching (OBS) has been proposed as a new switching paradigm for the so-called optical Internet, in order to overcome the technical limitations of optical packet switching, namely the lack of optical random access memory (optical RAM) and to the problems with synchronization (Baldine, Rouskas, Perros, & Stevenson, 2002; Chen, Qiao, & Yu, 2004; Qiao & Yoo, 1999; Turner, 1999; Yoo & Qiao, 1997; Xu, Perros, & Rouskas, 2001). OBS is a technical compromise between wavelength routing and optical packet switching, since it does not require optical buffering or packet-level processing as in optical packet switching, and it is more efficient than circuit switching if the traffic volume does not require a full wavelength channel. According to Dolzer, Gauger, Späth, and Bodamer (2001), OBS has the following characteristics: • Granularity—the transmission unit size (burst) of OBS is between the optical circuit switching and optical packet switching; • Separation between control and data—control information (header) and data are transmitted on a different wavelengths (or channels) with some time interval; • Allocation of resources—resources are allocated using mainly one-way reservation schemes. A source node does not need to wait for the acknowledge message from destination node to start transmitting the burst; • Variable burst length—the burst size is variable; • No optical buffering—burst switching does not require optical buffering at the intermediate nodes (without any delay).

Download Full-text

Design and Analysis of Optical Packet Switch Routers

Handbook of Research on Recent Developments in Intelligent Communication Application - Advances in Wireless Technologies and Telecommunication ◽

10.4018/978-1-5225-1785-6.ch005 ◽

2017 ◽

pp. 118-157 ◽

Cited By ~ 1

Author(s):

Vaibhav Shukla ◽

Aruna Jain

Keyword(s):

Wavelength Division Multiplexing ◽

High Speed ◽

Packet Switching ◽

Data Transfer ◽

Optical Packet Switching ◽

Bandwidth Utilization ◽

Wavelength Division ◽

Optical Packet Switch ◽

Switch Architectures ◽

Packet Switch

Optical packet switching is connectionless networking solution through which we can get high speed data transfer and optimum bandwidth utilization using wavelength division multiplexing technique. For realizing optical packet switching the numbers of optical packet switch architectures are available in market. In this chapter the authors discuss the overall development of optical packet switching; some recently published optical packet switch architectures are discussed in the chapter and a comparison is performed between the switches through loss, cost and buffer analysis.

Download Full-text

Use of a fiber Fabry-Perot tunable filter for high-speed optical packet switching: towards an experimental prototype

10.1117/12.316641 ◽

1998 ◽

Author(s):

Nina L. Taranenko ◽

Stephen C. Tenbrink ◽

Kevin Hsu ◽

Calvin M. Miller ◽

Yufei Bao

Keyword(s):

High Speed ◽

Packet Switching ◽

Tunable Filter ◽

Optical Packet Switching ◽

Experimental Prototype ◽

Fabry Perot

Download Full-text

Label Stacking Scenarios in Hybrid Wavelength and Code-Switched GMPLS Networks

Electronics ◽

10.3390/electronics7100251 ◽

2018 ◽

Vol 7 (10) ◽

pp. 251 ◽

Cited By ~ 3

Author(s):

Kai-Sheng Chen

Keyword(s):

Wavelength Division Multiplexing ◽

High Speed ◽

Network Performance ◽

Packet Switching ◽

Routing Algorithm ◽

Wavelength Assignment ◽

Optical Packet Switching ◽

Data Traffic ◽

Wavelength Division ◽

Increasing Demand

Multi-protocol label switching (MPLS) is a promising solution to implement high-speed internet protocol (IP) networks by reducing the layer number. To meet the increasing demand for data traffic, optical packet switching (OPS) is integrated under IP to provide high bandwidth to end users. Generalized MPLS (GMPLS) is perfectly compatible with the routing algorithm in IP/MPLS as it supports packet-switching functions. In this paper, we investigate the label stacking scenarios in GMPLS networks. In GMPLS, label stacking is done to reduce the node complexity by appending multiple labels to a single packet. Wavelength-division multiplexing (WDM) and optical code-division multiplexing (OCDM) signals have been widely used as identifying labels. As the labels can be permutated among the wavelengths or code dimensions, the structure of a label stack can be varied. However, studies on the relationship between label stacking scenarios and network performance are limited. To investigate this issue, we propose three label stacking models: sequential code distribution; sequential wavelength distribution, and random label distribution. The simulation results show that the sequential wavelength assignment, wherein the labels are uniformly distributed among the wavelengths, exhibits the best system performance in terms of the label-error rate (LER).

Download Full-text