Experimental Research on Automatic Alignment and Control Algorithm of Spatial Light-Fiber Coupling

Table 2

Comparison of the open- and closed-loop system results under different initial conditions.

Initial state	Open loop		Closed loop
	Mean coupling efficiency	Power standard deviation (dBm)	Mean coupling efficiency	Power standard deviation (dBm)
a	0.2041	0.089	0.5256	0.0249
b	0.4594	0.1183	0.5258	0.0247