Optical multi-wavelength label switching adopting gigabit ethernet technology

Although Ethernet technology is still the most popular LAN technology in use today at the desktop, the throughput offered by the 10 and 100 Mbps Ethernet is inadequate for high bandwidth networking applications such as real-time visualisation, high-resolution graphics, multimedia and Web applications. Gigabit Ethernet (GigE) technology provides 1,000 megabits per second (i.e., one gigabit per second) at more reasonable cost than the other technologies of comparable speed and therefore it is a natural upgrade strategy for many legacy Ethernet networks. This paper reports on a case study of a large New Zealand organization focusing on the level of GigE deployment, design, planning and implementation, network performance testing, problems encountered and future plans. Our findings show the feasibility and practicability of deploying GigE technology in high-speed networking applications such as campus- and corporate-wide local area networks.

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Experimental demonstration of optical packet assembly and segmentation for Gigabit Ethernet Optical Label Switching networks

10.1117/12.635911 ◽

2005 ◽

Author(s):

Zhicheng Sui ◽

Shilin Xiao ◽

Qingji Zeng ◽

Zhide Heng

Keyword(s):

Experimental Demonstration ◽

Switching Networks ◽

Label Switching ◽

Gigabit Ethernet

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Observations for the Role of Flux rope Eruption in a Geoeffective Solar Flare

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v4i2.6965 ◽

2014 ◽

Vol 4 (2) ◽

pp. 555-564

Author(s):

A.M Aslam

Keyword(s):

Solar Flare ◽

Flux Rope ◽

Magnetic Configuration ◽

Solar Dynamics Observatory ◽

Multi Wavelength ◽

Solar Dynamics ◽

Halo Coronal Mass Ejection ◽

Mass Ejection ◽

The Waves

On September 24, 2011 a solar flare of M 7.1 class was released from the Sun. The flare was observed by most of the space and ground based observatories in various wavebands. We have carried out a study of this flare to understand its causes on Sun and impact on earth. The flare was released from NOAA active region AR 11302 at 12:33 UT. Although the region had already produced many M class flares and one X- class flare before this flare, the magnetic configuration was not relaxed and still continued to evolve as seen from HMI observations. From the Solar Dynamics Observatory (SDO) multi-wavelength (131 Ã…, 171 Ã…, 304 Ã… and 1600Ã…) observations we identified that a rapidly rising flux rope triggered the flare although HMI observations revealed that magnetic configuration did not undergo a much pronounced change. The flare was associated with a halo Coronal Mass Ejection (CME) as recorded by LASCO/SOHO Observations. The flare associated CME was effective in causing an intense geomagnetic storm with minimum Dst index -103 nT. A radio burst of type II was also recorded by the WAVES/WIND. In the present study attempt is made to study the nature of coupling between solar transients and geospace.

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