The photonic lantern is a mode multiplexer/ demultiplexer used to improve the transmission capacity. The SMF cluster is embedded into a low refractive index capillary for adiabatic tapering, and then the tapered end is spliced with a few-mode fibre, fundamental mode in SMF is converted into the specific modes in FMF to realize a mode conversion and multiplexing ,The photonic lantern utilizes the orthogonality among various modes arising in few-mode fibres to greatly increase the number of data transmission channels and improve the transmission capacity.

Space division multiplexing optical transmission system
Mode division multiplexer/demultiplexer

Low insertion loss
Small crosstalk
Excellent electromagnetic interference free characteristics

Parameter Name	Parameter Value
Options	optical