Antiresonant Hollow Core Fiber With an Octave Spanning Bandwidth for Short Haul Data Communications

We report an effectively single mode tubular antiresonant hollow core fiber with minimum loss of ~25 dB/km at ~1200 nm, and an extremely wide low-loss transmission window (lower than 30 dB/km loss from 1000 to 1400 nm and 6 dB bandwidth exceeding 1000 nm). Despite the relatively large mode field diameter of 32 μm, the fiber can be interfaced to SMF28 to produce fully connectorized samples. Exploiting an excellent modal purity arising from large modal differential loss and low intermodal coupling, we demonstrate penalty-free 10G on-off keying data transmission through 100 m of fiber, at wavelengths of 1065, 1565, and 1963 nm.