The use of optical interconnects has burgeoned as a promising technology that can address the limits of data transfer for future high-performance silicon chips. Recent pushes to enhance optical communication have focused on developing wavelength-division multiplexing technology, and new dimensions of data transfer will be paramount to fulfill the ever-growing need for speed. Here we demonstrate an integrated multi-dimensional communication scheme that combines wavelength- and mode- multiplexing on a silicon photonic circuit. Using foundry-compatible photonic inverse design and spectrally flattened microcombs, we demonstrate a 1.12-Tb/s natively error-free data transmission throughout a silicon nanophotonic waveguide. Furthermore, we implement inverse-designed surface-normal couplers to enable multimode optical transmission between separate silicon chips throughout a multimode-matched fibre. All the inverse-designed devices comply with the process design rules for standard silicon photonic foundries. Our approach is inherently scalable to a multiplicative enhancement over the state of the art silicon photonic transmitters.
Modern microelectronic processors have migrated towards parallel computing architectures with many-core processors. However, such expansion comes with diminishing returns exacted by the high cost of data movement between individual processors. The use of optical interconnects 1,2 has burgeoned as a promising technology that can address the limits of this data transfer. While recent pushes to enhance optical communication have focused on developing wavelength-division multiplexing technology, this approach will eventually saturate the usable bandwidth, and new dimensions of data transfer will be paramount to fulfill the ever-growing need for speed 3-6 . Here we demonstrate an integrated intra-and inter-chip multi-dimensional communication scheme enabled by photonic inverse design. Using broad-band inverse-designed mode-division multiplexers, we combine wavelength-and mode-multiplexing of data at a rate exceeding terabit-per-second. Crucially, as we take advantage of an orthogonal optical basis, our approach is inherently scalable to a multiplicative enhancement over the current state of the art.
Lithium niobate (LN) is a promising and versatile material platform for implementing various elements essential for realizing integrated photonic technology. We report on integrated entangled photon-pair sources and adiabatic coupler circuits built in bulk/thin-film LN.
We demonstrate a 80-channel communication link with >150 Gbps error-free data transmission utilizing Photonic Crystal Resonator (PhCR) with normal dispersion as a comb source. We utilize a 4-channel inverse-designed mode-division multiplexer to increase data rates.
We demonstrate 130 Gbps transmission in each of 4 spatial modes using Si3N4 soliton microcombs and inverse-designed silicon mode multiplexers. Out of 52 carriers, 42 data channels show natively error-free data transmission.
We demonstrate 130 Gbps transmission in each of 4 spatial modes using Si3N4 soliton microcombs and inverse-designed silicon mode multiplexers. Out of 52 carriers, 42 data channels show natively error-free data transmission.
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