{"id":2867,"date":"2026-06-16T17:39:55","date_gmt":"2026-06-16T09:39:55","guid":{"rendered":"https:\/\/wavesplitter.com\/?post_type=product&#038;p=2867"},"modified":"2026-06-16T17:39:55","modified_gmt":"2026-06-16T09:39:55","slug":"400g-qsfp-dd-lr4-10km-transceiver-module","status":"publish","type":"product","link":"https:\/\/wavesplitter.com\/tw\/product\/400g-qsfp-dd-lr4-10km-transceiver-module\/","title":{"rendered":"400G QSFP-DD LR4 10km Transceiver Module"},"content":{"rendered":"<p>The WST-QD4-LR4-C is a hot-pluggable 400G QSFP-DD LR4 optical transceiver designed for 400 Gigabit<br \/>\nEthernet applications over single-mode fiber.<br \/>\nThe module supports an eight-lane 53.125 Gb\/s PAM4 electrical host interface and four optical lanes<br \/>\noperating at 106.25 Gb\/s PAM4. A DSP-based signal processing architecture is used to enable signal<br \/>\nconversion between the electrical and optical interfaces.<br \/>\nOn the transmit side, electrical signals drive four CWDM EML transmitters operating at nominal<br \/>\nwavelengths of 1271 nm, 1291 nm, 1311 nm, and 1331 nm. On the receive side, the optical signals are<br \/>\ndetected by a PIN photodiode array. The optical interface uses a duplex LC connector.<br \/>\nThe module supports transmission distances up to 10 km over G.652 single-modefiber and is intended for<br \/>\noperation in systems with host-side forward error correction (FEC). It operates from a single 3.3 V power<br \/>\nsupply and complies with IEEE 802.3cu, IEEE 802.3bs, and QSFP-DD MSA requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The WST-QD4-LR4-C is a hot-pluggable 400G QSFP-DD LR4 optical transceiver designed for 400 Gigabit Ethernet applications over single-mode fiber. The module supports an eight-lane 53.125 Gb\/s PAM4 electrical host interface and four optical lanes operating at 106.25 Gb\/s PAM4. A DSP-based signal processing architecture is used to enable signal conversion between the electrical and optical [&hellip;]<\/p>\n","protected":false},"featured_media":2848,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false},"product_cat":[23,24],"product_tag":[],"class_list":{"0":"post-2867","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-transceiver-module","7":"product_cat-800g-400g-200g-osfp-qsfp","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>400G QSFP-DD LR4 10km Transceiver Module - WaveSplitter Technologies<\/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:\/\/wavesplitter.com\/product\/400g-qsfp-dd-lr4-10km-transceiver-module\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"400G QSFP-DD LR4 10km Transceiver Module - WaveSplitter Technologies\" \/>\n<meta property=\"og:description\" content=\"The WST-QD4-LR4-C is a hot-pluggable 400G QSFP-DD LR4 optical transceiver designed for 400 Gigabit Ethernet applications over single-mode fiber. 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