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Sierra Leone Telecommunications Fiber Optic Cable Outage
The National Telecommunications Commission of Sierra Leone (NatCA) announces that the ongoing repair work on the ACE (Africa Coast to Europe) fiber optic cable, which began on May 31, 2024, continues to impact internet services. Sierra Leone and several West African countries are experiencing. Metro Cable SL Ltd, Sierra Leone's leading open-access Fibre-to-the-Home infrastructure provider, deeply regrets to inform the public of a significant service disruption caused by an incident on July 29, 2025, near the United States Embassy in Freetown. Unauthorized third-party activities involving. Freetown, SIERRA LEONE — On Tuesday, August 13, 2024, Sierra Leone's Minister of Communication, Innovation, and Technology, Salima Monorma Bah, alongside Mahmoud Idriss, Executive Director of Zoodlabs, held a press briefing to discuss the recent nationwide internet outage that has affected millions. The Internet Outages Map is an at-a-glance visualization of global Internet health over the last 24 hours, tracking Internet outages across ISPs, top application providers, public clouds, and edge service networks. -
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Optical Communication Transimpedance Amplifier
In optical communication systems, the transimpedance amplifier (TIA) serves a critical role by converting the low current generated by photodiodes into voltage. This paper explores three TIA topologies: common emitter with negative resistive feedback, regulated. transimpedance ampli-fiers (TIAs) serve in the front end of optical communication receivers (RXs). Despite or because of their simple topologies, TIAs pose rigid tradeoffs among their gain, noise, and bandwidth (BW). Explore pioneering discoveries, insightful ideas and new methods from leading researchers in the field. This proposed configuration integrates PMOS and NMOS transistors to improve bandwidth, gain, and power effic ency. -
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