400G QSFP-DD LR4 Optics: Architecture, Specs and Application
LINK-PP Official Store
·
March 11, 2026
Learn how 400G QSFP-DD LR4 transceivers work, including CWDM4 wavelengths, EML lasers, key specifications, and applications in high-speed data center networks.
400G QSFP-DD LR4 Products
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H3C QSFPDD-400G-LR4-WDM1300-DC Compatible 400GBASE-LR4 QSFP-DD 1310nm 10km Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.004.9 ★ 32 Reviews | 891 Sold -
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Extreme 400G-LR4-QSFPDD10KM Compatible 400GBASE-LR4 QSFP-DD 1310nm 10km Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.005 ★ 31 Reviews | 1.1K Sold -
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Cisco QDD-400G-LR4-S Compatible 400GBASE-LR4 QSFP-DD 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.005 ★ 24 Reviews | 897 Sold -
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LINK-PP LQD-CW400-LR4C 400GBASE-LR4 QSFP-DD 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.005 ★ 47 Reviews | 990 Sold -
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Juniper QDD-2X400G-LR4-P Compatible LINK-PP 800GBASE-2LR4 QSFP-DD 8 x 100G PAM4 1310nm 10km Dual Duplex LC SMF Transceiver Module $ 1,512.72 ~ 1,719.005 ★ 14 Reviews | 194 Sold -
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FS QDD-2LR4-800G Compatible LINK-PP 800GBASE-2LR4 QSFP-DD 8 x 100G PAM4 1310nm 10km Dual Duplex LC SMF Transceiver Module $ 1,512.72 ~ 1,719.004.9 ★ 19 Reviews | 193 Sold -
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Cisco QDD-2LR4-800G Compatible LINK-PP 800GBASE-2LR4 QSFP-DD 8 x 100G PAM4 1310nm 10km Dual Duplex LC SMF Transceiver Module $ 1,512.72 ~ 1,719.004.9 ★ 18 Reviews | 208 Sold -
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Arista QDD-800G-2LR4 Compatible LINK-PP 800GBASE-2LR4 QSFP-DD 8 x 100G PAM4 1310nm 10km Dual Duplex LC SMF Transceiver Module $ 1,512.72 ~ 1,719.005 ★ 12 Reviews | 197 Sold -
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Dell 400G-Q56-DD-LR4 Compatible 400GBASE-LR4 QSFP-DD 1310nm 10km Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.005 ★ 31 Reviews | 994 Sold -
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Dell QDD-LR4-400G Compatible 400GBASE-LR4 QSFP-DD 1310nm 10km Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.004.9 ★ 31 Reviews | 1.1K Sold
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