Representations of Optical Fiber Communications in Four and Three Dimensional Spaces

Representations of optical fibre communications in three‐ and four‐dimensional spaces

“…Finally, we note that in the construction of the representations, given the presence of quadratic terms and products, it is possible to obtain another 12 formally correct representations [12] that differ in some signs and that, however, as will be shown in the next section, do not add any significant contribution. Indeed, for our purposes, these representations can be considered linearly dependent on the ones so far described.…”