  Envisioning more compact and cost accessible astronomical instruments is now
possible with existing photonic technologies like specialty optical fibres,
photonic lanterns and ultrafast laser inscribed chips. We present an original
design of a multicore fibre (MCF) terminated with multimode photonic lantern
ports. It is designed to act as a relay fibre with the coupling effciency of a
multimode fibre, modal stability similar to a single-mode fibre and low loss in
a wide range of wavelengths (380 nm to 860 nm). It provides phase and amplitude
scrambling to achieve a stable near field and far field output illumination
pattern despite input coupling variations, and low modal noise for increased
photometric stability for high signal-to-noise applications such as precision
radial velocity (PRV) science. Preliminary results are presented for a 511-core
MCF and compared with current state of the art octagonal fibre.
