LEOF	Lensed chemically etched optical fiber
MCF	Multicore fiber
TX	Transmission
RX	Reception
SDM	Space-division multiplexing
FIFO	Fan-in/Fan-out device
SMF	Single-mode optical fiber
HFA	Hydrofluoric acid
SEM	Scanning electron microscopy
FWHM	Full width at half maximum
IL	Insertion loss
ASM	Angular Spectrum Method
MFD	Mode Field Diameter