{"id":577,"date":"2017-02-21T05:51:17","date_gmt":"2017-02-21T05:51:17","guid":{"rendered":"http:\/\/www.dkphotonics.com\/blog\/?p=577"},"modified":"2017-04-20T08:34:40","modified_gmt":"2017-04-20T08:34:40","slug":"know-difference-cwdm-dwdm","status":"publish","type":"post","link":"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/","title":{"rendered":"Know the Difference between CWDM and DWDM"},"content":{"rendered":"<p>A WDM (Wavelength Division Multiplexing) is a system that uses a multiplexing (at the transmitter) and a demultiplexer (at the receiver) for the completion of the process and transmission of the signals.<\/p>\n<p>The WDM is divided into three types (WDM, CWDM and DWDM) on the basis of wavelength difference among the three. The article discusses the main differences among <a href=\"http:\/\/www.dkphotonics.com\">CWDM and DWDM<\/a>.<\/p>\n<p><a href=\"http:\/\/www.dkphotonics.com\/product\/WDM-Products.html\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-626\" src=\"http:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-600x436.jpg\" alt=\"\" width=\"600\" height=\"436\" srcset=\"https:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-600x436.jpg 600w, https:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-300x218.jpg 300w, https:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-768x558.jpg 768w, https:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products.jpg 850w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>CWDM stands for Coarse Wavelength Division Multiplexing, and DWDM is the acronym for Dense Wavelength Division Multiplexing. Whether DWDM or CWDM, both are the types of WDM mechanism and have an array of differencess.<\/p>\n<p>Let\u2019s get acquainted with the chief difference between CWDM and DWDM:<\/p>\n<ul>\n<li>The Coarse WDM has less than 8 active wavelengths per optical fiber whereas the DWDM has more than 8 active wavelengths per optical fiber.<\/li>\n<li>The CWDM has lower capacity strength and hence is low in costs; conversely the DWDM possesses high capacity \u2013this leads to an augmented price which is worth its qualities.<\/li>\n<li>When it comes to the difference between the distance of the two, the CWDM has short range communication because the wavelength is not amplified, and DWDM has long range communication.<\/li>\n<li><strong><a href=\"http:\/\/www.dkphotonics.com\/product\/WDM-Products.html\">CWDM Mux and Demux systems<\/a><\/strong> are developed to be used in multiplexing multiple CWDM channels into one or two fibers.<\/li>\n<li>Another major difference is that DWDM systems are made for longer haul transmittal, by keeping the wavelengths closely packed. Also, a DWDM device can transmit more data over long distances and to a significantly larger run of cable with lesser interference than a comparable CWDM system which has a shorter haul transmittal.<\/li>\n<li>Furthermore, the Dense Wavelength Division Multiplying systems are capable to fit more than forty different data streams in the amount akin to that of fiber used for two data streams in a CWDM system.<\/li>\n<\/ul>\n<p>Apart from all the difference there is one more and that is wavelength drift is possible in CWDM, but when it comes to the DWDM \u2013precision lasers are needed to keep channels on the target.<\/p>\n<p>Beyond being different from each other \u2013these systems play different roles in the effective transfer of the signals, and thereby both are important enough.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A WDM (Wavelength Division Multiplexing) is a system that uses a multiplexing (at the transmitter) and a demultiplexer (at the receiver) for the completion of the process and transmission of the signals. The WDM is divided into three types (WDM, CWDM and DWDM) on the basis of wavelength difference among the three. The article discusses &hellip; <a href=\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Know the Difference between CWDM and DWDM<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,112,14,7],"tags":[94,98,95,93,97,96,33,99],"class_list":["post-577","post","type-post","status-publish","format-standard","hentry","category-cwdm","category-dwdm","category-oadm","category-wdm","tag-100ghz-8ch-dwdm","tag-100ghz-awg","tag-200ghz-dwdm","tag-8ch-cwdm-module","tag-athermal-awg-dwdm-module","tag-compact-cwdm","tag-mini-size-cwdm","tag-thermal-awg-dwdm-module"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Know the Difference between CWDM and DWDM - DK Photonics Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Know the Difference between CWDM and DWDM - DK Photonics Blog\" \/>\n<meta property=\"og:description\" content=\"A WDM (Wavelength Division Multiplexing) is a system that uses a multiplexing (at the transmitter) and a demultiplexer (at the receiver) for the completion of the process and transmission of the signals. The WDM is divided into three types (WDM, CWDM and DWDM) on the basis of wavelength difference among the three. The article discusses &hellip; Continue reading Know the Difference between CWDM and DWDM\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\" \/>\n<meta property=\"og:site_name\" content=\"DK Photonics Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=100007490146301\" \/>\n<meta property=\"article:published_time\" content=\"2017-02-21T05:51:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-04-20T08:34:40+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-600x436.jpg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@dkphotonics\" \/>\n<meta name=\"twitter:site\" content=\"@dkphotonics\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/#\/schema\/person\/0b457ec0f0d290e882388bd40032efe1\"},\"headline\":\"Know the Difference between CWDM and DWDM\",\"datePublished\":\"2017-02-21T05:51:17+00:00\",\"dateModified\":\"2017-04-20T08:34:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\"},\"wordCount\":362,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-600x436.jpg\",\"keywords\":[\"100GHz 8CH DWDM\",\"100GHz AWG\",\"200GHz DWDM\",\"8CH CWDM Module\",\"Athermal AWG DWDM Module\",\"compact CWDM\",\"Mini Size CWDM\",\"Thermal AWG DWDM Module\"],\"articleSection\":[\"CWDM\",\"DWDM\",\"OADM\",\"WDM\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\",\"url\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\",\"name\":\"Know the Difference between CWDM and DWDM - DK Photonics Blog\",\"isPartOf\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products-600x436.jpg\",\"datePublished\":\"2017-02-21T05:51:17+00:00\",\"dateModified\":\"2017-04-20T08:34:40+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#primaryimage\",\"url\":\"https:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products.jpg\",\"contentUrl\":\"https:\/\/www.dkphotonics.com\/blog\/wp-content\/uploads\/WDM-Products.jpg\",\"width\":850,\"height\":618},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/know-difference-cwdm-dwdm\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.dkphotonics.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Know the Difference between CWDM and DWDM\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.dkphotonics.com\/blog\/#website\",\"url\":\"https:\/\/www.dkphotonics.com\/blog\/\",\"name\":\"DK Photonics Blog\",\"description\":\"DK Photonics&#039; 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