Dense Photonic Integrated Circuit Optical Coupling

Abstract: An optical interconnect arrangement (2) for use in transmitting light between a photonic integrated circuit (4) and a plurality of optical fibres (6), comprises a plurality of primary optical beam management elements (40), a plurality of secondary optical beam management elements (50), and a plurality of optical fibre alignment structures (60). Each optical fibre alignment structure (60) is configured to receive a corresponding optical fibre (6) so that the end of the corresponding optical fibre (6) is aligned with, but separated from, a corresponding one of the secondary optical beam management elements (50), and the optical interconnect arrangement (2) defines a plurality of optical paths, each optical path extending from a surface of the optical interconnect arrangement to the end of a corresponding one of the optical fibre alignment structures (60) via a corresponding one of the primary optical beam management elements and a corresponding one of the secondary optical beam management elements. An optical system is also disclosed which comprises the optical interconnect arrangement (2), a photonic integrated circuit (4), and a plurality of optical fibres (6).

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