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A novel polarimetric OFDR that can simultaneously measure both space-resolved transverse-stresses and reflections along a > 800–1200 meters optical fiber is reported, where the system can unambiguously distinguish stresses from any reflections with sub-mm-spatial resolution.
Large mode area fiber with pre-compensated index profile by asymmetric stress applying part is proposed to effectively cancel out the bending effects. Mode area scalability up to ∼2500 μm2 is presented.
World's first demonstration of WDM transmission in a HC-PBGF at the predicted low loss region of 2μm is presented. A total capacity of 16 Gbit/s is achieved using 1×8.5 Gbit/s and 3×2.5 Gbit/s channels modulated using NRZ OOK over 290 meters of hollow core fiber.
We present results on broadband gain equalisation in a MM-EDFA for SDM transmission obtained by optimization of the pump launch and careful tailoring of both the fiber refractive index profile and erbium ion distribution.
We demonstrate simultaneous modal gains of ∼20dB for different pair-wise combinations of spatial and polarization modes in a MM-EDFA. The differential modal gains are reduced by fiber design and control of the pump field distribution.
We present measurements of higher-order modes in lengths of few-moded fibers up to 0.5 km long using Spatially and Spectrally resolved (S2) imaging. Both discrete scattering events and mode-mixing due to distributed scattering are measured.
We present the first systematic study of a two-moded erbium-doped fiber amplifier, and identified its performance trends. By optimizing dopant distribution and pump modes we achieved over 22dB gain for both LP01 and LP11-modes.
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