{"id":"https://openalex.org/W2044062416","doi":"https://doi.org/10.1587/elex.10.20130116","title":"Development of a vertical optical coupler using a slanted etching of InP/InGaAsP waveguide","display_name":"Development of a vertical optical coupler using a slanted etching of InP/InGaAsP waveguide","publication_year":2013,"publication_date":"2013-01-01","ids":{"openalex":"https://openalex.org/W2044062416","doi":"https://doi.org/10.1587/elex.10.20130116","mag":"2044062416"},"language":"en","primary_location":{"id":"doi:10.1587/elex.10.20130116","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.10.20130116","pdf_url":"https://www.jstage.jst.go.jp/article/elex/10/6/10_10.20130116/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":false,"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":"bronze","oa_url":"https://www.jstage.jst.go.jp/article/elex/10/6/10_10.20130116/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5021509376","display_name":"Sunghan Choi","orcid":"https://orcid.org/0000-0002-5859-1419"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Sunghan Choi","raw_affiliation_strings":["Research Center for Advanced Science and Technology (RCAST), The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Research Center for Advanced Science and Technology (RCAST), The University of Tokyo","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000680886","display_name":"Akio Higo","orcid":"https://orcid.org/0000-0002-4595-0929"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akio Higo","raw_affiliation_strings":["Research Center for Advanced Science and Technology (RCAST), The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Research Center for Advanced Science and Technology (RCAST), The University of Tokyo","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073687001","display_name":"Masaru Zaitsu","orcid":null},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masaru Zaitsu","raw_affiliation_strings":["Research Center for Advanced Science and Technology (RCAST), The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Research Center for Advanced Science and Technology (RCAST), The University of Tokyo","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5080247310","display_name":"Myung-Joon Kwack","orcid":null},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Myung-Joon Kwack","raw_affiliation_strings":["Research Center for Advanced Science and Technology (RCAST), The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Research Center for Advanced Science and Technology (RCAST), The University of Tokyo","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012711617","display_name":"Masakazu Sugiyama","orcid":"https://orcid.org/0000-0002-4303-4038"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]},{"id":"https://openalex.org/I14396692","display_name":"Tokyo University of Information Sciences","ror":"https://ror.org/044bdx604","country_code":"JP","type":"education","lineage":["https://openalex.org/I14396692"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masakazu Sugiyama","raw_affiliation_strings":["Department of Electrical Engineering and Information Systems, The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Information Systems, The University of Tokyo","institution_ids":["https://openalex.org/I14396692","https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004166791","display_name":"Hiroshi Toshiyoshi","orcid":"https://orcid.org/0000-0003-3678-7741"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroshi Toshiyoshi","raw_affiliation_strings":["Research Center for Advanced Science and Technology (RCAST), The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Research Center for Advanced Science and Technology (RCAST), The University of Tokyo","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5010373939","display_name":"Yoshiaki Nakano","orcid":"https://orcid.org/0000-0002-2713-9542"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yoshiaki Nakano","raw_affiliation_strings":["Research Center for Advanced Science and Technology (RCAST), The University of Tokyo"],"affiliations":[{"raw_affiliation_string":"Research Center for Advanced Science and Technology (RCAST), The University of Tokyo","institution_ids":["https://openalex.org/I74801974"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5021509376"],"corresponding_institution_ids":["https://openalex.org/I74801974"],"apc_list":null,"apc_paid":null,"fwci":0.961,"has_fulltext":true,"cited_by_count":10,"citation_normalized_percentile":{"value":0.78748234,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"10","issue":"6","first_page":"20130116","last_page":"20130116"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10299","display_name":"Photonic and Optical Devices","score":1.0,"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/T10299","display_name":"Photonic and Optical Devices","score":1.0,"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/T10205","display_name":"Advanced Fiber Optic Sensors","score":0.9993000030517578,"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/T11429","display_name":"Semiconductor Lasers and Optical Devices","score":0.9984999895095825,"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/bevel","display_name":"Bevel","score":0.7997490167617798},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.7641210556030273},{"id":"https://openalex.org/keywords/etching","display_name":"Etching (microfabrication)","score":0.6784486770629883},{"id":"https://openalex.org/keywords/waveguide","display_name":"Waveguide","score":0.6635405421257019},{"id":"https://openalex.org/keywords/output-coupler","display_name":"Output coupler","score":0.6213896870613098},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.6099845767021179},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.604716956615448},{"id":"https://openalex.org/keywords/reactive-ion-etching","display_name":"Reactive-ion etching","score":0.5786895155906677},{"id":"https://openalex.org/keywords/coupling-loss","display_name":"Coupling loss","score":0.5647120475769043},{"id":"https://openalex.org/keywords/wavelength","display_name":"Wavelength","score":0.5349774360656738},{"id":"https://openalex.org/keywords/substrate","display_name":"Substrate (aquarium)","score":0.49428820610046387},{"id":"https://openalex.org/keywords/coupling","display_name":"Coupling (piping)","score":0.46384552121162415},{"id":"https://openalex.org/keywords/optical-fiber","display_name":"Optical fiber","score":0.397787868976593},{"id":"https://openalex.org/keywords/layer","display_name":"Layer (electronics)","score":0.2163352072238922},{"id":"https://openalex.org/keywords/nanotechnology","display_name":"Nanotechnology","score":0.10434544086456299},{"id":"https://openalex.org/keywords/composite-material","display_name":"Composite material","score":0.07268890738487244}],"concepts":[{"id":"https://openalex.org/C116017498","wikidata":"https://www.wikidata.org/wiki/Q1903785","display_name":"Bevel","level":2,"score":0.7997490167617798},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.7641210556030273},{"id":"https://openalex.org/C100460472","wikidata":"https://www.wikidata.org/wiki/Q2368605","display_name":"Etching (microfabrication)","level":3,"score":0.6784486770629883},{"id":"https://openalex.org/C200687136","wikidata":"https://www.wikidata.org/wiki/Q11233438","display_name":"Waveguide","level":2,"score":0.6635405421257019},{"id":"https://openalex.org/C9986408","wikidata":"https://www.wikidata.org/wiki/Q17125851","display_name":"Output coupler","level":3,"score":0.6213896870613098},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.6099845767021179},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.604716956615448},{"id":"https://openalex.org/C130472188","wikidata":"https://www.wikidata.org/wiki/Q1640159","display_name":"Reactive-ion etching","level":4,"score":0.5786895155906677},{"id":"https://openalex.org/C21792228","wikidata":"https://www.wikidata.org/wiki/Q5178039","display_name":"Coupling loss","level":3,"score":0.5647120475769043},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.5349774360656738},{"id":"https://openalex.org/C2777289219","wikidata":"https://www.wikidata.org/wiki/Q7632154","display_name":"Substrate (aquarium)","level":2,"score":0.49428820610046387},{"id":"https://openalex.org/C131584629","wikidata":"https://www.wikidata.org/wiki/Q4308705","display_name":"Coupling (piping)","level":2,"score":0.46384552121162415},{"id":"https://openalex.org/C194232370","wikidata":"https://www.wikidata.org/wiki/Q162","display_name":"Optical fiber","level":2,"score":0.397787868976593},{"id":"https://openalex.org/C2779227376","wikidata":"https://www.wikidata.org/wiki/Q6505497","display_name":"Layer (electronics)","level":2,"score":0.2163352072238922},{"id":"https://openalex.org/C171250308","wikidata":"https://www.wikidata.org/wiki/Q11468","display_name":"Nanotechnology","level":1,"score":0.10434544086456299},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.07268890738487244},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C97126364","wikidata":"https://www.wikidata.org/wiki/Q349669","display_name":"Resonator","level":2,"score":0.0},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1587/elex.10.20130116","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.10.20130116","pdf_url":"https://www.jstage.jst.go.jp/article/elex/10/6/10_10.20130116/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":false,"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.10.20130116","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.10.20130116","pdf_url":"https://www.jstage.jst.go.jp/article/elex/10/6/10_10.20130116/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":false,"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/G12401395","display_name":null,"funder_award_id":"Technology","funder_id":"https://openalex.org/F4320320912","funder_display_name":"Ministry of Education, Culture, Sports, Science and Technology"},{"id":"https://openalex.org/G7599130655","display_name":null,"funder_award_id":"Grant","funder_id":"https://openalex.org/F4320320912","funder_display_name":"Ministry of Education, Culture, Sports, Science and Technology"},{"id":"https://openalex.org/G7693551792","display_name":null,"funder_award_id":"(MEXT)","funder_id":"https://openalex.org/F4320320912","funder_display_name":"Ministry of Education, Culture, Sports, Science and Technology"},{"id":"https://openalex.org/G8044579487","display_name":null,"funder_award_id":"Japan","funder_id":"https://openalex.org/F4320320912","funder_display_name":"Ministry of Education, Culture, Sports, Science and Technology"}],"funders":[{"id":"https://openalex.org/F4320320912","display_name":"Ministry of Education, Culture, Sports, Science and Technology","ror":"https://ror.org/048rj2z13"},{"id":"https://openalex.org/F4320322832","display_name":"University of Tokyo","ror":"https://ror.org/057zh3y96"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2044062416.pdf","grobid_xml":"https://content.openalex.org/works/W2044062416.grobid-xml"},"referenced_works_count":6,"referenced_works":["https://openalex.org/W1656507452","https://openalex.org/W1983503715","https://openalex.org/W2100867663","https://openalex.org/W2147608639","https://openalex.org/W2156921909","https://openalex.org/W2157169264"],"related_works":["https://openalex.org/W2070736010","https://openalex.org/W2359313340","https://openalex.org/W4388376001","https://openalex.org/W3001471993","https://openalex.org/W1912896571","https://openalex.org/W2389091192","https://openalex.org/W2009420109","https://openalex.org/W2093286625","https://openalex.org/W3138583210","https://openalex.org/W2362770635"],"abstract_inverted_index":{"We":[0],"demonstrate":[1],"a":[2,18,36,57],"simple":[3],"and":[4,14],"efficient":[5],"optical":[6,12],"coupler":[7,52],"for":[8],"vertical":[9],"coupling":[10],"between":[11,69],"fibers":[13,73],"InP-based":[15],"waveguides":[16],"using":[17,31],"slant-etched":[19],"mirror.":[20],"The":[21,50],"angle":[22],"of":[23,48,67,79],"the":[24,41,70,77],"etched":[25],"mirror":[26],"can":[27],"be":[28],"controlled":[29],"by":[30],"an":[32],"aluminum":[33],"jig":[34],"with":[35,56,60],"beveled":[37],"surface":[38],"inserted":[39],"under":[40],"substrate":[42],"during":[43],"RIE":[44],"(reactive":[45],"ion":[46],"etching)":[47],"InP/InGaAsP.":[49],"off-chip":[51],"is":[53,74],"fabricated":[54],"simultaneously":[55],"high-mesa":[58],"waveguide":[59],"only":[61],"one":[62],"etching":[63],"process.":[64],"Coupling":[65],"loss":[66],"7.3dB":[68],"tapered":[71],"single-mode":[72],"obtained":[75],"within":[76],"wavelength":[78],"1530-1570nm.":[80]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-03-12T08:34:05.389933","created_date":"2025-10-10T00:00:00"}
