High-Density Optical Interconnects Based on Self-Imaging in Coupled Waveguide Arrays
J. P., J. K. and A. M. acknowledge support from The Ministry of Science, Technological Development and Innovation of the Republic of Serbia , Grant No. 451-03-47/2023-01/200017.
Optics and Laser Technology
Rapidly increasing demand for higher data bandwidths has motivated exploration of new communication channels based on spatially multiplexed in-fibre and on-chip coupled light guides. However, the conventionally used periodically arranged coupled waveguides display complicated light propagation patterns, ranging from quasiperiodic to nearly chaotic. Taking a different approach, we spectrally engineer interwaveguide coupling to instigate self-imaging of the input light state at the array output and thus enable construction of novel high-fidelity interconnects. Simple implementation via modulation of the interwaveguide separations makes these interconnects realizable in all fabrication platforms. Their competitive advantages are negligible crosstalk-induced information loss, high density that exceeds the current standards by an order of magnitude, and compatibility with both classical and quantum information encoding schemes. Moreover, the wavelength-dependent self-imaging opens up new possibilities for wavelength and spatial division demultiplexing. The proposed analytical designs are supported by extensive numerical simulations of silicon-on-insulator, silicon nitride and silica glass waveguide arrays, and a statistical feasibility study.
© 2023 Elsevier Ltd. All rights reserved.
Locate the Document
Petrovic, J., Kršić, J., Maluckov, A., & Veerman, J. J. P. (2023). High-density optical interconnects based on self-imaging in coupled waveguide arrays. Optics & Laser Technology, 163, 109381.