title: Delivering 10 Gb/s optical data with picosecond timing uncertainty over 75 km distance.
abstract: We report a method to determine propagation delays of optical 10 Gb/s data traveling through a 75 km long amplified fiber link with an uncertainty of 4 ps. The one-way propagation delay is determined by two-way exchange and cross correlation of short (< 1 ms) bursts of 10 Gb/s data, with a single-shot time resolution better than 2.5 ps. We thus achieve a novel optical communications link suited for both long-haul high-capacity data transfer and time transfer with picosecond-range uncertainty. This opens up the perspective of synchronized optical telecommunication networks allowing picosecond-range time distribution and millimeter-range positioning.
authors: N
authors: N
authors: Sotiropoulos
authors: C M
authors: CM
authors: Okonkwo
authors: R
authors: R
authors: Nuijts
authors: H
authors: H
authors: de Waardt
authors: J C J
authors: JC
authors: Koelemeij