{"id":67204,"date":"2020-09-15T16:45:00","date_gmt":"2020-09-15T13:45:00","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/ultra-fast-magnetic-switching-with-potential-to-transform-fiber-optical-communications\/"},"modified":"2020-09-15T16:45:00","modified_gmt":"2020-09-15T13:45:00","slug":"ultra-fast-magnetic-switching-with-potential-to-transform-fiber-optical-communications","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/ultra-fast-magnetic-switching-with-potential-to-transform-fiber-optical-communications\/","title":{"rendered":"#Ultra-fast magnetic switching with potential to transform fiber optical communications"},"content":{"rendered":"

“#Ultra-fast magnetic switching with potential to transform fiber optical communications<\/strong>”<\/p>\n

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\"Ultra-fast<\/img>
\n Credit: Trinity College Dublin
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Researchers at CRANN and Trinity’s School of Physics have discovered that a new material can act as a super-fast magnetic switch.<\/p>\n

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When struck by successive ultra-short laser pulses it exhibits “toggle switching” that could increase the capacity of the global fiber optic cable network by an order of magnitude.<\/p>\n

Expanding the capacity of the internet<\/b>
\nSwitching between two states\u20140 and 1\u2014is the basis of digital technology<\/a> and the backbone of the internet. The vast majority of all the data we download<\/a> is stored magnetically in huge data centers across the world, linked by a network of optical fibers.
\nObstacles to further progress with the internet are three-fold, specifically the speed and energy consumption of the semiconducting or magnetic switches that process and store our data and the capacity of the fiber optic network to handle it.
\nThe new discovery of ultra-fast toggle switching using laser light on mirror-like films of an alloy of manga<\/a>nese, ruthenium and gallium known as MRG could help with all three problems.
\nNot only does light offer a great advantage when it comes to speed but magnetic switches need no power to maintain their state. More importantly, they now offer the prospect of rapid time-domain multiplexing of the existing fiber network, which could enable it to handle ten times as much data.
\nThe science<\/a> behind magnetic switching<\/b>
\nWorking in the photonics laboratory at CRANN, Trinity’s nanoscience research center, Dr. Chandrima Banerjee and Dr. Jean Besbas used ultra-fast laser pulses lasting just a hundred femtoseconds (one ten thousand billionth of a second) to switch the magnetisation of thin films of MRG back and forth. The direction of magnetisation can point either in or out of the film.
\nWith every successive laser pulse, it abruptly flips its direction. Each pulse is thought to momentarily heat the electrons in MRG by about 1,000 degrees, which leads to a flip of its magnetisation. The discovery of ultra-fast toggle switching of MRG has just been published in leading international journal, Nature Communications<\/i>.
\nDr. Karsten Rode, Senior Research Fellow in the “Magnetism and Spin Electronics Group” in Trinity’s School of Physics, suggests that the discovery just marks the beginning of an exciting new research direction.
\nDr. Rode said: “We have a lot of work to do to fully understand the behavior of the atoms and electrons in a solid that is far from equilibrium on a femtosecond timescale. In particular, how can magnetism change so quickly while obeying the fundamental law of physics that says that angular momentum must be conserved? In the spirit of our spintronics team, we will now gather data from new pulsed-laser experiments on MRG, and other materials, to better understand these dynamics and link the ultra-fast optical response with electronic transport. We plan experiments with ultra-fast electronic pulses to test the hypothesis that the origin of the toggle switching is purely thermal.”
\nNext year, Chandrima will continue her work at the University of Haifa, Israel, with a group who can generate even shorter laser pulses. The Trinity researchers, led by Karsten, plan a new joint project with collaborators in the Netherlands, France, Norway and Switzerland, aimed at proving the concept of ultra-fast, time-domain multiplexing of fiber-optic channels.<\/p>\n

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More information:<\/strong>
\n C. Banerjee et al. Single pulse all-optical toggle switching of magnetization without gadolinium in the ferrimagnet Mn2RuxGa, Nature Communications<\/i> (2020). DOI: 10.1038\/s41467-020-18340-9\n <\/div>\n

\n Citation<\/strong>:
\n Ultra-fast magnetic switching with potential to transform fiber optical communications (2020, September 15)
\n retrieved 15 September 2020
\n from https:\/\/phys.org\/news<\/a>\/2020-09-ultra-fast-magnetic-potential-fiber-optical.html<\/p>\n

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
\n part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n

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“#Ultra-fast magnetic switching with potential to transform fiber optical communications” Credit: Trinity College Dublin Researchers at CRANN and Trinity’s School of Physics have discovered that a new material can act as a super-fast magnetic switch. When struck by successive ultra-short laser pulses it exhibits “toggle switching” that could increase the capacity of the global fiber…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[11724,69561],"class_list":["post-67204","post","type-post","status-publish","format-standard","hentry","category-sciencee","tag-optics-photonics","tag-ultra-fast-magnetic-switching-with-potential-to-transform-fiber-optical-communications"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/67204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=67204"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/67204\/revisions"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=67204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=67204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=67204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}