{"id":453252,"date":"2020-09-23T14:17:27","date_gmt":"2020-09-23T18:17:27","guid":{"rendered":"http:\/\/www.rochester.edu\/newscenter\/?p=453252"},"modified":"2024-05-12T20:50:11","modified_gmt":"2024-05-13T00:50:11","slug":"rochester-researchers-document-record-setting-optical-fiber-453252","status":"publish","type":"post","link":"https:\/\/www.rochester.edu\/newscenter\/rochester-researchers-document-record-setting-optical-fiber-453252\/","title":{"rendered":"Rochester researchers document record-setting optical fiber"},"content":{"rendered":"

Work shows the innovative fiber\u2014made of seven capillaries surrounding a hollow core\u2014may be a promising platform for quantum information processing and other applications.<\/h2>\n

An innovative optical fiber greatly reduces the \u201cnoise\u201d interfering with the signals it transmits compared to the single-mode fibers now widely used, researchers at the Ä¢¹½´«Ã½<\/a> report.<\/p>\n

The anti-resonant hollow core fiber, created by researchers at the University of Central Florida, produces the lowest levels ever recorded from interference caused by the vibration of quantum material\u2014known as acoustic phonons\u2014in the glass as the signals travel through the fiber at room temperatures.<\/p>\n

The lab\u2019s findings demonstrate that the fiber is a \u201cpromising platform for low-noise applications, such as for quantum information processing and optical communications,\u201d writes lead author Arjun Iyer, a graduate research associate in the lab of William Renninger<\/a>, an assistant professor of optics at Rochester.<\/p>\n

\"illustration
A new anti-resonant hollow core fiber features an arrangement of seven hollow capillaries around a hollow core inside the fiber. (Courtesy of Arjun Iyer, graduate research associate)<\/figcaption><\/figure>\n

To document the properties of the fiber, researchers in Renninger\u2019s lab developed a highly sensitive measuring technique. Their findings are reported in a paper published in APL Photonics<\/a><\/em>.<\/p>\n

\u201cIt\u2019s a very valuable fiber, and despite a lot of interest in it by researchers and some companies, nobody had really studied the behavior of phonons supported by the structure, and to what extent it actually reduced \u2018noise,\u2019&thin;\u201d says Renninger, an expert in experimental and theoretical nonlinear optics.<\/p>\n

A unique answer to optical fiber \u2018noise\u2019<\/strong><\/h3>\n

\u201cNoise\u201d refers to any disturbance that masks or disrupts a signal being sent by light through an optical fiber. One such disturbance is caused by phonons\u2014quantized acoustic or sound waves that occur at atomic and subatomic levels, in this case in the glass of an optical fiber.<\/p>\n

Phonons cause a beam of light to \u201cscatter,\u201d creating splinter beams of different frequencies, or colors, that can interfere with, and reduce the energy of, the main beam. While some forms of scattering can be useful for specific applications, it interferes with quantum applications and even basic optical communications.<\/p>\n

Noise can be reduced by cooling the fibers to extremely low, cryogenic temperatures, but that\u2019s \u201cvery expensive and complicated,\u201d Renninger says. Another approach is to attempt to use complicated error-correcting algorithms to correct for noise.<\/p>\n

The anti-resonant hollow-core fiber, however, represents a straightforward solution that works even at room temperatures. Created by coauthor Rodrigo Amezcua Correa and other researchers at the College of Optics and Photonics at the University of Central Florida (CREOL)<\/a>, the fiber features a unique arrangement of seven hollow capillaries arranged around a hollow core inside the fiber.<\/p>\n

The result is minimal overlap between the fiber\u2019s outer layer of glass and the light traveling through the core, eliminating interference from acoustic phonons emanating from the glass.<\/p>\n

Tests by Renninger\u2019s lab showed that the arrangement is 10 times more effective at reducing noise compared to other hollow fiber designs. \u201cThe little noise that\u2019s left is caused by acoustic waves in the air inside the fiber, so if you were to evacuate the air it would be another 100 times more effective,\u201d Renninger says. \u201cYou would have incredibly low noise\u201d.<\/p>\n

\u201cIf the fate of the world depended on reducing acoustic noise in optical fibers, this is the one you would want to use.\u201d<\/p>\n

The study was supported with funding from the Army Research Office and Renninger\u2019s National Science Foundation CAREER award<\/a>.<\/p>\n

Other coauthors are Wendao Xu, a graduate research associate in Renninger\u2019s lab, and Enrique Antonio-Lopez, a research scientist at CREOL.<\/p>\n","protected":false},"excerpt":{"rendered":"

The innovative fiber\u2014made of seven capillaries surrounding a hollow core\u2014may be a promising platform for quantum information processing and other applications.<\/p>\n","protected":false},"author":286,"featured_media":453372,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[116],"tags":[18632,18652,36892,37472],"class_list":["post-453252","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sci-tech","tag-hajim-school-of-engineering-and-applied-sciences","tag-institute-of-optics","tag-research","tag-william-renninger"],"acf":[],"yoast_head":"\nRochester researchers document record-setting optical fiber<\/title>\n<meta name=\"description\" content=\"University of Rochster research demonstrates that a new optical fiber may be a promising platform for quantum information processing.\" \/>\n<meta name=\"robots\" content=\"index, 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