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https://hdl.handle.net/2440/136086
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dc.contributor.author | Xu, X. | - |
dc.contributor.author | Ren, G. | - |
dc.contributor.author | Feleppa, T. | - |
dc.contributor.author | Liu, X. | - |
dc.contributor.author | Boes, A. | - |
dc.contributor.author | Mitchell, A. | - |
dc.contributor.author | Lowery, A.J. | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Nature Photonics, 2022; 16(8):595-602 | - |
dc.identifier.issn | 1749-4885 | - |
dc.identifier.issn | 1749-4893 | - |
dc.identifier.uri | https://hdl.handle.net/2440/136086 | - |
dc.description.abstract | Programmable photonic integrated circuits (PICs) are dense assemblies of tunable elements that provide flexible reconfigurability to enable different functions to be selected; however, due to manufacturing variations and thermal gradients that affect the optical phases of the elements, it is difficult to guarantee a stable correspondence between the electrical commands to the chip, and the function that it provides. Here we demonstrate a self-calibrating programmable PIC with full control over its complex impulse response, in the presence of thermal cross-talk between phase-tuning elements. Self-calibration is achieved by: (1) incorporating an optical reference path into the PIC; (2) using the Kramers–Kronig relationship to recover the phase response from amplitude measurements; and (3) applying a fast-converging self-calibration algorithm. We demonstrate dial-up signal processing functions with complex impulse responses using only 25 training iterations. This approach offers stable and accurate control of large-scale PICs, for demanding applications such as communications network reconfiguration, neuromorphic hardware accelerators and quantum computers. | - |
dc.description.statementofresponsibility | Xingyuan Xu, Guanghui Ren, Tim Feleppa, Xumeng Liu, Andreas Boes, Arnan Mitchell, and Arthur J. Lowery | - |
dc.language.iso | en | - |
dc.publisher | Springer Science and Business Media LLC | - |
dc.rights | Copyright © 2022, The Author(s), under exclusive licence to Springer Nature Limited | - |
dc.source.uri | http://dx.doi.org/10.1038/s41566-022-01020-z | - |
dc.title | Self-calibrating programmable photonic integrated circuits | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1038/s41566-022-01020-z | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP190101576 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP190102773 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Boes, A. [0000-0001-8443-3396] | - |
Appears in Collections: | Electrical and Electronic Engineering publications IPAS publications |
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