{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T08:50:10Z","timestamp":1791881410130,"version":"4.3.4"},"reference-count":50,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T00:00:00Z","timestamp":1791331200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T00:00:00Z","timestamp":1791331200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,10,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Free\u2010space optical routing and programmable Fourier optical processing are promising for next\u2010generation photonic information systems. Here, we propose an optically addressed nested Fourier metasurface (OA\u2010NFM) platform for dynamically switchable, multidimensional optical routing and diffraction\u2010channel engineering without dense electrical interconnects. By integrating a Fourier\u2010coefficient\u2010based inverse\u2010design method with a nested Fourier metasurface architecture, the proposed platform enables simultaneous control of diffraction channels and polarization states. By spatially multiplexing Fourier\u2010engineered mode regions within nested supercells and activating them through digital light processing (DLP)\u2010based optical addressing, the OA\u2010NFM achieves programmable momentum\u2010space redistribution, sideband clustering, and angular\u2010channel engineering via controllable superlattice diffraction. The local Fourier mode defines the target diffraction response, while the global nested array factor controls the angular distribution of clustered sidebands. Simulations show that individually optimized modes achieve diffraction efficiencies up to 45% with polarization fidelities above 0.99. The OA\u2010NFM achieves diffraction efficiencies up to 37% within the \u00b1\u00a01.1\u00b0 receiver window, excluding losses from the DMD and projection optics. NRZ\u2010OOK simulations confirm BERs below the hard\u2010decision FEC threshold (10\n                    <jats:sup>\u22123<\/jats:sup>\n                    ) at 25\u00a0Gbps across the 1500\u20131600\u00a0nm band. This work demonstrates a promising platform for optical switching, free\u2010space routing, and multidimensional photonic information processing.\n                  <\/jats:p>","DOI":"10.1002\/nap2.70309","type":"journal-article","created":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T17:05:01Z","timestamp":1791392701000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Programmable Multidimensional Diffraction Engineering via an Optically Addressed Nested Fourier Metasurface"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-6372-4487","authenticated-orcid":false,"given":"Jing","family":"Guo","sequence":"first","affiliation":[{"name":"Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences  Changchun China"},{"name":"University of Chinese Academy of Sciences  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinglei","family":"Zhao","sequence":"additional","affiliation":[{"name":"Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences  Changchun China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingrui","family":"Yang","sequence":"additional","affiliation":[{"name":"Yuelushan Laboratory  Changsha China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-3763-3484","authenticated-orcid":false,"given":"Zongyi","family":"Liu","sequence":"additional","affiliation":[{"name":"Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences  Changchun China"},{"name":"University of Chinese Academy of Sciences  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8610-1915","authenticated-orcid":false,"given":"Mingdong","family":"Zhu","sequence":"additional","affiliation":[{"name":"Yuelushan Laboratory  Changsha China"},{"name":"State Key Laboratory of Hybrid Rice Hunan Academy of Agricultural Sciences  Changsha China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Liu","sequence":"additional","affiliation":[{"name":"Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences  Changchun China"},{"name":"University of Chinese Academy of Sciences  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao","family":"Li","sequence":"additional","affiliation":[{"name":"Qualcomm Inc.  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