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Culpeper, VA, United States

Kim I.,Attochron | Chaffee T.,Attochron | Fleishauer R.,Attochron | Szajowski P.,Attochron | And 3 more authors.
Laser Focus World | Year: 2013

A new free-space optical (FSO) technology uses ultrashort pulse lasers for reliable high-bandwidth wireless communications in all weather conditions for backhaul distances of 2 to 3 km, with 4G cellular communications placing increasing demands on backhaul capacity between cell towers. The new USP FSO systems output a passively mode-locked 100 fs pulse at 1550 nm, with an average output power of 50 mW with a 1 Gbit/s repetition rate. The stream of ultrashort pulses is modulated externally to produce the gigabit Ethernet signal. These advanced modulation schemes will extend wireless backhaul capacity to 10 Gbit/s and even 100 Gbit/s between cell towers. This will significantly accelerate the deployment of full 4G networks by cellular carriers and be sufficient for future 5G cellular networks. Source

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