We establish the concept of the density of the optical degrees of freedom that may be applied to any photonics based system. As a key example of this versatile approach we explore information transfer using optical communication. We demonstrate both experimentally, theoretically and numerically that the use of a basis set with fields containing optical vortices does not increase the telecommunication capacity of an optical system.
Bibliographical noteFunding Information:
The authors thank the UK Engineering and Physical Sciences Research Council (EPSRC: EP/J01771X/1, EP/ M000869/1) for funding. KD acknowledges support from a Royal Society Leverhulme Trust Senior Fellowship.
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