Optical Orbital Angular Momentum Demultiplexing and Channel Equalization by Using Equalizing Dammann Vortex Grating

Figure 2

The emergent light intensity distribution and normalized spectrum diagram. (a) The light intensity distribution of the original DVG. (b) The corresponding normalized spectrum diagram. (c) The light intensity distribution of the EDVG. (d) The corresponding normalized spectrum diagram.

(a)

(b)

(c)

(d)