Dataset for the article "Splicing hollow core fiber with standard glass-core fiber with ultralow back-reflection and low coupling loss"

Paper to be published in ACS Photonics Uploaded Archive (RAR) includes 5 data files that are Excel format (.xlsx) The figures are as follows: Fig. 1: The back-reflection and coupling loss of spliced SMF-HCF connection. Fig. 4. The relationship between coupling loss and offset of light propagated through GRINs with different cleave angles to a NANF. Fig. 7. Simulated and measured back-reflection from angle-cleaved GRINs with SMF-GRIN offset. Simulations: offset (given next to the data points) optimized for minimum coupling loss. Exper-iment: offset of 4 µm (blue stars) and 5 µm (green triangles). Fig. 8. Back-reflection from zero-offset angle-cleaved SMF-GRIN: simulations (red line), data from literature (blue [22] and green [24] squares), and achieved experimentally here (red circles). Fig. 11. Measured OTDR trace showing back-reflection in the offset-spliced SMF-GRIN angle-spliced to the HCF