{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T14:58:02Z","timestamp":1793199482367,"version":"4.5.0"},"reference-count":31,"publisher":"Optica Publishing Group","issue":"3","license":[{"start":{"date-parts":[[2025,1,15]],"date-time":"2025-01-15T00:00:00Z","timestamp":1736899200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2025,1,15]],"date-time":"2025-01-15T00:00:00Z","timestamp":1736899200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/100012547","name":"Natural Science Foundation of Guangxi Zhuang Autonomous Region","doi-asserted-by":"publisher","award":["2020GXNSFDA297019"],"award-info":[{"award-number":["2020GXNSFDA297019"]}],"id":[{"id":"10.13039\/100012547","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62075047"],"award-info":[{"award-number":["62075047"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Innovation Project of GUET Graduate Education","award":["2024YCXS218"],"award-info":[{"award-number":["2024YCXS218"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Appl. Opt."],"published-print":{"date-parts":[[2025,1,20]]},"abstract":"<jats:p>\n                    This paper presents, to our knowledge, a novel micro-ring wavelength selective switch\n\t\t\t\t\tdevice based on a contra-directional coupler (contra-DC), which\n\t\t\t\t\tutilizes the transparent window formed by the contra-DC to select the\n\t\t\t\t\tsingle resonant wavelength of the micro-ring resonator, avoiding the\n\t\t\t\t\tlimitation of free spectral range and realizing the function of\n\t\t\t\t\twavelength selection\/switching. The desired wavelength switching\n\t\t\t\t\tfunction is achieved by changing the crystal state of the Ge\n                    <jats:sub>2<\/jats:sub>\n                    Sb\n                    <jats:sub>2<\/jats:sub>\n                    Te\n                    <jats:sub>5<\/jats:sub>\n                    (GST) loaded on the micro-ring\n\t\t\t\t\tresonator. When the device is in the on state, the desired wavelength\n\t\t\t\t\tsignal is selectively output from the drop port of the bus waveguide;\n\t\t\t\t\twhen the device is in the off state, light is output from the through\n\t\t\t\t\tport. By modifying the GST crystal state, selective routing of light\n\t\t\t\t\tcan be achieved, which can be used in optical interconnection\n\t\t\t\t\tnetworks. The simulation is performed using a 3D finite-difference\n\t\t\t\t\tmethod. The wavelength selection device achieves a 3\u00a0dB\n\t\t\t\t\tbandwidthof 1.6\u00a0nm with a side lobe suppression ratio of\n\t\t\t\t\t20\u00a0dB at a length of 230\u00a0\u00b5m; the switching device\n\t\t\t\t\tachieves the extinction ratio of about 14.7\u00a0dB and a side lobe\n\t\t\t\t\tsuppression ratio of 18.2\u00a0dB between the on\/off states.\n                  <\/jats:p>","DOI":"10.1364\/ao.546303","type":"journal-article","created":{"date-parts":[[2024,12,23]],"date-time":"2024-12-23T13:00:06Z","timestamp":1734958806000},"page":"662","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Micro-ring wavelength selective switch device based on contra-DC"],"prefix":"10.1364","volume":"64","author":[{"given":"Xixi","family":"Chu","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuqing","family":"Song","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rongquan","family":"Chen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Wang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xudong","family":"Hu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhouyan","family":"Pan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8489-3904","authenticated-orcid":true,"given":"Jinbiao","family":"Liu","sequence":"additional","affiliation":[{"name":"The 34th Research Institute of China Electronics Technology Group Corporation"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1517-1753","authenticated-orcid":true,"given":"Ming","family":"Chen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2025,1,15]]},"reference":[{"key":"ao-64-3-662-R1","doi-asserted-by":"publisher","first-page":"534","DOI":"10.1038\/nature16454","volume":"528","author":"Sun","year":"2015","journal-title":"Nature"},{"key":"ao-64-3-662-R2","doi-asserted-by":"publisher","first-page":"120008","DOI":"10.3788\/COL201715.120008","volume":"15","author":"Zhou","year":"2017","journal-title":"Chin. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}