World‑First 1000km Bidirectional Real‑time Transmission Verified on Hollow‑core Fiber

China Telecom Research Institute, YOFC and ZTE have jointly completed the world’s first bidirectional real‑time transmission test over a 1007.48‑km hollow‑core fiber link. Running over extended C+L‑band, the trial delivered 800 Gb/s per wavelength with a total capacity of 128 Tb/s, setting a new global distance benchmark for hollow‑core fiber real‑time transmission. The team solved gas‑line absorption… Continue reading World‑First 1000km Bidirectional Real‑time Transmission Verified on Hollow‑core Fiber

China Telecom Launches 2026 Provincial 400G DWDM/OTN New-Build Tender

According to China Telecom Sunshine Procurement Network, on October 12, China Telecom released the pre-qualification notice for its 2026 Centralized Procurement Project for Provincial 400G DWDM/OTN Equipment (New Build). Approved and sponsored by China Telecom Corporation Limited, this group-level procurement is self-funded and now open for pre-qualification applications from eligible bidders. This procurement targets provincial… Continue reading China Telecom Launches 2026 Provincial 400G DWDM/OTN New-Build Tender