Towards high-capacity fibre-optic communications at the speed of light in vacuum

Diode-pumped Wideband Thulium-doped Fiber Amplifiers for Optical Communications in the 1800 - 2050 nm Window

“…Thulium-doped fiber amplifiers (TDFAs) operating around 2 μm offer the broadest gain spectrum of all rare-earth doped fiber amplifiers and represent an attractive route towards significantly enhanced transmission bandwidths 2 . Additionally, their operating region overlaps with the predicted minimum loss window of hollowcore photonic bandgap fibers (HC-PBGFs), which hold great promise as a transmission medium due to their ultra-low nonlinearity and faster transmission speed as compared to conventional solid core fibers 3 . Recently, the first amplified data transmission system at 2 μm using TDFAs and HC-PBGFs has been demonstrated, confirming the viability/practicability of this approach 4 .…”

Semi-analytical model for hollow-core anti-resonant fibers

“…Hollow-core optical fibers can be used as hosts for light [1], matter [2], and their interactions [3,4]. In a piece of hollow-core fiber (HCF), the large overlap of laser light and studied matter leads to significant advantages in applications known as lab-on-a-fiber.…”

All-Optical Programmable Disaggregated Data Centre Network Realized by FPGA-Based Switch and Interface Card

“…HC-PBGF is suitable for all the interconnection links due to its physical properties and more specifically due to its reduced propagation delay compared to standard single model fiber (SSMF). Light in HC-PBGF propagates in almost vacuum conditions, about 1.46 times faster than silica-cored SSMF [17]. A hollow-core fiber can demonstrate approximately 30% less delay (3.5 ns/m) than a conventional SMF (5 ns/m), offering significant advantages when used in network links in terms of latency reduction.…”