{"id":"https://openalex.org/W4205195813","doi":"https://doi.org/10.1587/elex.18.20210500","title":"Small magnetless integrated optical isolator using a magnetized cobalt ferrite film","display_name":"Small magnetless integrated optical isolator using a magnetized cobalt ferrite film","publication_year":2021,"publication_date":"2021-12-14","ids":{"openalex":"https://openalex.org/W4205195813","doi":"https://doi.org/10.1587/elex.18.20210500"},"language":"en","primary_location":{"id":"doi:10.1587/elex.18.20210500","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.18.20210500","pdf_url":"https://www.jstage.jst.go.jp/article/elex/19/2/19_18.20210500/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Electronics Express","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://www.jstage.jst.go.jp/article/elex/19/2/19_18.20210500/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5010245375","display_name":"Mario Alberto Serrano-N\u00fa\u00f1ez","orcid":"https://orcid.org/0000-0001-9584-7762"},"institutions":[{"id":"https://openalex.org/I114531698","display_name":"Tokyo Institute of Technology","ror":"https://ror.org/0112mx960","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Mario Alberto Serrano-N\u00fa\u00f1ez","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Tokyo Institute of Technology"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Tokyo Institute of Technology","institution_ids":["https://openalex.org/I114531698"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039328718","display_name":"Yuya Shoji","orcid":"https://orcid.org/0000-0003-1907-5136"},"institutions":[{"id":"https://openalex.org/I4210106043","display_name":"Foundation for Ichthyosis and Related Skin Types","ror":"https://ror.org/01fq70c03","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210106043"]},{"id":"https://openalex.org/I114531698","display_name":"Tokyo Institute of Technology","ror":"https://ror.org/0112mx960","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698"]}],"countries":["JP","US"],"is_corresponding":false,"raw_author_name":"Yuya Shoji","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Tokyo Institute of Technology","FIRST, Tokyo Institute of Technology"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Tokyo Institute of Technology","institution_ids":["https://openalex.org/I114531698"]},{"raw_affiliation_string":"FIRST, Tokyo Institute of Technology","institution_ids":["https://openalex.org/I114531698","https://openalex.org/I4210106043"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045487524","display_name":"Tetsuya Mizumoto","orcid":"https://orcid.org/0000-0002-1971-4746"},"institutions":[{"id":"https://openalex.org/I114531698","display_name":"Tokyo Institute of Technology","ror":"https://ror.org/0112mx960","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tetsuya Mizumoto","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Tokyo Institute of Technology"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Tokyo Institute of Technology","institution_ids":["https://openalex.org/I114531698"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5010245375"],"corresponding_institution_ids":["https://openalex.org/I114531698"],"apc_list":null,"apc_paid":null,"fwci":0.3049,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.58454343,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":95},"biblio":{"volume":"19","issue":"2","first_page":"20210500","last_page":"20210500"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12510","display_name":"Magneto-Optical Properties and Applications","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12510","display_name":"Magneto-Optical Properties and Applications","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10232","display_name":"Optical Network Technologies","score":0.9936000108718872,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10299","display_name":"Photonic and Optical Devices","score":0.9860000014305115,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/optical-isolator","display_name":"Optical isolator","score":0.8307338953018188},{"id":"https://openalex.org/keywords/yttrium-iron-garnet","display_name":"Yttrium iron garnet","score":0.7786935567855835},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.7494816780090332},{"id":"https://openalex.org/keywords/isolator","display_name":"Isolator","score":0.730430543422699},{"id":"https://openalex.org/keywords/ferrite","display_name":"Ferrite (magnet)","score":0.6512957215309143},{"id":"https://openalex.org/keywords/faraday-effect","display_name":"Faraday effect","score":0.6418359279632568},{"id":"https://openalex.org/keywords/cobalt-ferrite","display_name":"Cobalt ferrite","score":0.5689325332641602},{"id":"https://openalex.org/keywords/shields","display_name":"Shields","score":0.5575575828552246},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.525698184967041},{"id":"https://openalex.org/keywords/cobalt","display_name":"Cobalt","score":0.4712942838668823},{"id":"https://openalex.org/keywords/photonics","display_name":"Photonics","score":0.4263136684894562},{"id":"https://openalex.org/keywords/isolation","display_name":"Isolation (microbiology)","score":0.42054638266563416},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.33842551708221436},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.27127283811569214},{"id":"https://openalex.org/keywords/electromagnetic-shielding","display_name":"Electromagnetic shielding","score":0.17853057384490967},{"id":"https://openalex.org/keywords/magnetic-field","display_name":"Magnetic field","score":0.17374691367149353},{"id":"https://openalex.org/keywords/composite-material","display_name":"Composite material","score":0.14530083537101746},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.137810617685318},{"id":"https://openalex.org/keywords/metallurgy","display_name":"Metallurgy","score":0.13429000973701477},{"id":"https://openalex.org/keywords/optical-fiber","display_name":"Optical fiber","score":0.09638145565986633},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.08278140425682068}],"concepts":[{"id":"https://openalex.org/C203146411","wikidata":"https://www.wikidata.org/wiki/Q1934296","display_name":"Optical isolator","level":3,"score":0.8307338953018188},{"id":"https://openalex.org/C2775869346","wikidata":"https://www.wikidata.org/wiki/Q909701","display_name":"Yttrium iron garnet","level":2,"score":0.7786935567855835},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.7494816780090332},{"id":"https://openalex.org/C54888747","wikidata":"https://www.wikidata.org/wiki/Q962002","display_name":"Isolator","level":2,"score":0.730430543422699},{"id":"https://openalex.org/C37210646","wikidata":"https://www.wikidata.org/wiki/Q5105088","display_name":"Ferrite (magnet)","level":2,"score":0.6512957215309143},{"id":"https://openalex.org/C207230154","wikidata":"https://www.wikidata.org/wiki/Q848501","display_name":"Faraday effect","level":3,"score":0.6418359279632568},{"id":"https://openalex.org/C2911037189","wikidata":"https://www.wikidata.org/wiki/Q105088807","display_name":"Cobalt ferrite","level":3,"score":0.5689325332641602},{"id":"https://openalex.org/C109589588","wikidata":"https://www.wikidata.org/wiki/Q2253638","display_name":"Shields","level":3,"score":0.5575575828552246},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.525698184967041},{"id":"https://openalex.org/C515602321","wikidata":"https://www.wikidata.org/wiki/Q740","display_name":"Cobalt","level":2,"score":0.4712942838668823},{"id":"https://openalex.org/C20788544","wikidata":"https://www.wikidata.org/wiki/Q467054","display_name":"Photonics","level":2,"score":0.4263136684894562},{"id":"https://openalex.org/C2775941552","wikidata":"https://www.wikidata.org/wiki/Q25212305","display_name":"Isolation (microbiology)","level":2,"score":0.42054638266563416},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.33842551708221436},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.27127283811569214},{"id":"https://openalex.org/C2265751","wikidata":"https://www.wikidata.org/wiki/Q332007","display_name":"Electromagnetic shielding","level":2,"score":0.17853057384490967},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.17374691367149353},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.14530083537101746},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.137810617685318},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.13429000973701477},{"id":"https://openalex.org/C194232370","wikidata":"https://www.wikidata.org/wiki/Q162","display_name":"Optical fiber","level":2,"score":0.09638145565986633},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08278140425682068},{"id":"https://openalex.org/C89423630","wikidata":"https://www.wikidata.org/wiki/Q7193","display_name":"Microbiology","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1587/elex.18.20210500","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.18.20210500","pdf_url":"https://www.jstage.jst.go.jp/article/elex/19/2/19_18.20210500/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Electronics Express","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1587/elex.18.20210500","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.18.20210500","pdf_url":"https://www.jstage.jst.go.jp/article/elex/19/2/19_18.20210500/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Electronics Express","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1010094948","display_name":null,"funder_award_id":"JPNP16007","funder_id":"https://openalex.org/F4320338075","funder_display_name":"Core Research for Evolutional Science and Technology"},{"id":"https://openalex.org/G2432324578","display_name":"\u5317\u6d77\u9053\u306b\u304a\u3051\u308b\u7e69\u6587\u6587\u5316\u306e\u5730\u57df\u7684\u7814\u7a76-\u7279\u306b\u5f8c\u671f\u53ca\u3073\u6669\u671f\u7e69\u6587\u6587\u5316\u3092\u4e2d\u5fc3\u3068\u3057\u3066-","funder_award_id":"13004","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G2792802287","display_name":null,"funder_award_id":"KAKENHI","funder_id":"https://openalex.org/F4320338075","funder_display_name":"Core Research for Evolutional Science and Technology"},{"id":"https://openalex.org/G363957976","display_name":null,"funder_award_id":"19H02190","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G3790518314","display_name":"\u7cbe\u795e\u8584\u5f31\u5150\u306e\u611f\u899a\u6a5f\u80fd\u304a\u3088\u3073\u904b\u52d5\u6a5f\u80fd\u306e\u8a13\u7df4\u3092\u52b9\u7387\u7684\u306b\u884c\u3046\u305f\u3081\u306e\u8a13\u7df4\u6a5f\u5668\u306e\u958b\u767a\u3068\u9644\u5c5e\u3059\u308b\u30d1\u30cd\u30eb\u306e\u56f3\u5f62\u306b\u95a2\u3059\u308b\u7814\u7a76","funder_award_id":"16007","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G6718509927","display_name":null,"funder_award_id":"CREST","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G932296061","display_name":null,"funder_award_id":"JPNP13004","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"}],"funders":[{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"},{"id":"https://openalex.org/F4320338075","display_name":"Core Research for Evolutional Science and Technology","ror":"https://ror.org/00097mb19"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4205195813.pdf","grobid_xml":"https://content.openalex.org/works/W4205195813.grobid-xml"},"referenced_works_count":39,"referenced_works":["https://openalex.org/W1561425337","https://openalex.org/W1563533830","https://openalex.org/W1611359823","https://openalex.org/W1636362406","https://openalex.org/W2038997903","https://openalex.org/W2053762147","https://openalex.org/W2054796696","https://openalex.org/W2058672601","https://openalex.org/W2066219575","https://openalex.org/W2083786687","https://openalex.org/W2090922417","https://openalex.org/W2091382331","https://openalex.org/W2113162977","https://openalex.org/W2163157308","https://openalex.org/W2398013427","https://openalex.org/W2467903526","https://openalex.org/W2570379445","https://openalex.org/W2579371645","https://openalex.org/W2734445137","https://openalex.org/W2734602167","https://openalex.org/W2770129357","https://openalex.org/W2783985672","https://openalex.org/W2785697544","https://openalex.org/W2794760720","https://openalex.org/W2809586536","https://openalex.org/W2963949614","https://openalex.org/W2969307922","https://openalex.org/W3014177127","https://openalex.org/W3019133392","https://openalex.org/W3089009585","https://openalex.org/W3095140800","https://openalex.org/W3097996743","https://openalex.org/W3099983007","https://openalex.org/W3101384300","https://openalex.org/W3104775199","https://openalex.org/W3120702476","https://openalex.org/W3175964272","https://openalex.org/W3179068628","https://openalex.org/W3205943705"],"related_works":["https://openalex.org/W2146565430","https://openalex.org/W1561425337","https://openalex.org/W2144956021","https://openalex.org/W1994812691","https://openalex.org/W2094547831","https://openalex.org/W2187110681","https://openalex.org/W2045945878","https://openalex.org/W1524620650","https://openalex.org/W1974641803","https://openalex.org/W3035755608"],"abstract_inverted_index":{"We":[0],"experimentally":[1],"demonstrated":[2,53],"a":[3,8,40,74,84],"silicon":[4,91],"optical":[5],"isolator":[6],"using":[7],"monolithically":[9],"integrated":[10,93],"cobalt":[11],"ferrite":[12,72],"(CFO)":[13],"film":[14],"as":[15],"magneto-optical":[16],"material,":[17],"achieving":[18],"an":[19,68],"isolation":[20,55,89],"ratio":[21],"of":[22,29,35,60,67,96],"9.6dB":[23],"near":[24],"1550nm":[25],"wavelength.":[26],"By":[27],"virtue":[28],"the":[30,37,45,57,64,97],"large":[31],"Faraday":[32],"rotation":[33],"coefficient":[34],"CFO,":[36],"device":[38,86],"has":[39],"compact":[41],"footprint":[42],"comparing":[43],"to":[44,78,82],"current":[46],"yttrium":[47,79],"iron":[48,80],"garnet-based":[49],"isolators.":[50],"Furthermore,":[51],"we":[52],"self-biased":[54],"by":[56],"strong":[58],"remanence":[59],"CFO":[61],"films,":[62],"eliminating":[63],"tedious":[65],"demand":[66],"external":[69],"magnet.":[70],"Cobalt":[71],"represents":[73],"potential":[75],"alternative":[76],"approach":[77],"garnets":[81],"realize":[83],"practical":[85],"for":[87],"on-chip":[88],"in":[90],"photonic":[92],"circuits":[94],"because":[95],"small":[98],"footprint.":[99]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1}],"updated_date":"2026-04-21T08:09:41.155169","created_date":"2025-10-10T00:00:00"}
