{"id":359,"date":"2020-08-14T11:40:09","date_gmt":"2020-08-14T10:40:09","guid":{"rendered":"https:\/\/blog.thomarite.uk\/?p=359"},"modified":"2020-08-17T14:48:39","modified_gmt":"2020-08-17T13:48:39","slug":"optical-in-networking-101","status":"publish","type":"post","link":"https:\/\/blog.thomarite.uk\/index.php\/2020\/08\/14\/optical-in-networking-101\/","title":{"rendered":"Optical in Networking: 101"},"content":{"rendered":"\n<p>This is a very good  presentation about <a href=\"https:\/\/www.youtube.com\/watch?v=__wn9zXFiy8&amp;t=20s\">optical<\/a> stuff from NANOG 70 (2017). And I noticed there is an <a href=\"https:\/\/www.youtube.com\/watch?v=nKeZaNwPKPo\">updated version<\/a> from NANOG 77 (2019). I watched the 2017 (2h) and there is something always bites me: db vs dbm<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"169\" src=\"https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-1024x169.png\" alt=\"\" class=\"wp-image-360\" srcset=\"https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-1024x169.png 1024w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-300x50.png 300w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-768x127.png 768w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-1536x254.png 1536w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-2048x339.png 2048w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2020\/08\/Screenshot-from-2020-08-14-11-36-25-1200x199.png 1200w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/figure>\n\n\n\n<p>A bit more info about dB vs dBm: <a href=\"https:\/\/www.flukenetworks.com\/knowledge-base\/dsp-fta-series\/db-vs-dbm\">here<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/DBm\">here<\/a><\/p>\n\n\n\n<p>Close to the end, there are some common questions about optical that he provides answers. I liked the ones about &#8220;looking at the lasers can make you blind&#8221; and the point that is worth cleaning your fibers. A bit about cleaning <a href=\"https:\/\/www.flukenetworks.com\/Expertise\/Learn-About\/Fiber-Testing\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is a very good presentation about optical stuff from NANOG 70 (2017). And I noticed there is an updated version from NANOG 77 (2019). I watched the 2017 (2h) and there is something always bites me: db vs dbm A bit more info about dB vs dBm: here and here Close to the end, &hellip; <a href=\"https:\/\/blog.thomarite.uk\/index.php\/2020\/08\/14\/optical-in-networking-101\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Optical in Networking: 101&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-359","post","type-post","status-publish","format-standard","hentry","category-networks"],"_links":{"self":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts\/359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/comments?post=359"}],"version-history":[{"count":1,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts\/359\/revisions"}],"predecessor-version":[{"id":361,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts\/359\/revisions\/361"}],"wp:attachment":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/media?parent=359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/categories?post=359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/tags?post=359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}