Fiber Bragg grating (FBG) based rearrangeable nonblocking optical cross con
nects (OXC's) using multiport optical circulators are proposed in this lett
er. The use of multiport optical circulators instead of three-port circulat
ors can be more efficient for large optical cross connects systems. Perform
ance evaluations of proposed large dimension optical cross connects are inv
estigated.