This paper presents an all-fiber, fully-optically controlled, optical-path length modulator based on highly absorbing optical fiber. The modulator utilizes a high-power 980 nm pump diode and a short section of vanadium-co-doped single mode fiber that is heated through absorption and a non-radiative relaxation process. The achievable path length modulation range primarily depends on the pump’s power and the convective heat-transfer coefficient of the surrounding gas, while the time response primarily depends on the heated fiber’s diameter. An absolute optical length change in excess of 500 \u03bcm and a time-constant as short as 11 ms, were demonstrated experimentally. The all-fiber design allows for an electrically-passive and remote operation of the modulator. The presented modulator could find use within various fiber-optics systems that require optical (remote) path length control or modulation.<\/p>\n\n\n\n
https:\/\/www.osapublishing.org\/oe\/abstract.cfm?uri=oe-21-10-11794<\/a><\/p>","protected":false},"excerpt":{"rendered":" This paper presents an all-fiber, fully-optically controlled, optical-path length modulator based on highly absorbing optical fiber. The modulator utilizes a high-power 980 nm pump diode and a short section of vanadium-co-doped single mode fiber that is heated through absorption and Read More …<\/a><\/p>","protected":false},"author":7,"featured_media":1252,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[14,31,11],"tags":[],"_links":{"self":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts\/355"}],"collection":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/comments?post=355"}],"version-history":[{"count":1,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts\/355\/revisions"}],"predecessor-version":[{"id":356,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/posts\/355\/revisions\/356"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/media\/1252"}],"wp:attachment":[{"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/media?parent=355"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/categories?post=355"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/au.feri.um.si\/leoss\/en\/wp-json\/wp\/v2\/tags?post=355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}