Feasibility study of 1×4 optical mode switch based on single dimensional mode-set

Feasibility study of 1x4 optical mode switch, especially mode-mismatching loss is studied. As a result, sufficient low loss of -0.567 dB, -0.602 dB, -1.008 dB, -0.947 dB have been confirmed for 0
^th
, 1
^st
,2
^nd
and 3
^rd
modes, respectively .