{"id":"https://openalex.org/W3133518910","doi":"https://doi.org/10.1587/elex.18.20212001","title":"Recent progress and challenges toward ultrahigh-speed transmission beyond 10 Tbit/s with optical Nyquist pulses","display_name":"Recent progress and challenges toward ultrahigh-speed transmission beyond 10 Tbit/s with optical Nyquist pulses","publication_year":2021,"publication_date":"2021-03-11","ids":{"openalex":"https://openalex.org/W3133518910","doi":"https://doi.org/10.1587/elex.18.20212001","mag":"3133518910"},"language":"en","primary_location":{"id":"doi:10.1587/elex.18.20212001","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.18.20212001","pdf_url":"https://www.jstage.jst.go.jp/article/elex/18/7/18_18.20212001/_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/18/7/18_18.20212001/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5030709830","display_name":"Masataka Nakazawa","orcid":"https://orcid.org/0000-0001-6323-1445"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Masataka Nakazawa","raw_affiliation_strings":["Research Organization of Electrical Communication, Tohoku University"],"affiliations":[{"raw_affiliation_string":"Research Organization of Electrical Communication, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035731249","display_name":"Masato Yoshida","orcid":"https://orcid.org/0000-0002-8818-9519"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masato Yoshida","raw_affiliation_strings":["Research Organization of Electrical Communication, Tohoku University"],"affiliations":[{"raw_affiliation_string":"Research Organization of Electrical Communication, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006690054","display_name":"Toshihiko Hirooka","orcid":"https://orcid.org/0000-0002-7446-7119"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Toshihiko Hirooka","raw_affiliation_strings":["Research Organization of Electrical Communication, Tohoku University"],"affiliations":[{"raw_affiliation_string":"Research Organization of Electrical Communication, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5030709830"],"corresponding_institution_ids":["https://openalex.org/I201537933"],"apc_list":null,"apc_paid":null,"fwci":0.2032,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.48829421,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"18","issue":"7","first_page":"20212001","last_page":"20212001"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10232","display_name":"Optical Network Technologies","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/T10232","display_name":"Optical Network Technologies","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/T10767","display_name":"Advanced Photonic Communication Systems","score":0.9994999766349792,"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/T10988","display_name":"Advanced Fiber Laser Technologies","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/terabit","display_name":"Terabit","score":0.9328707456588745},{"id":"https://openalex.org/keywords/nyquist\u2013shannon-sampling-theorem","display_name":"Nyquist\u2013Shannon sampling theorem","score":0.714241623878479},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.6867501139640808},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.5721375942230225},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.5610144734382629},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.5103625655174255},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.5051782727241516},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.44122129678726196},{"id":"https://openalex.org/keywords/phase-shift-keying","display_name":"Phase-shift keying","score":0.43468955159187317},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4312199652194977},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4193941354751587},{"id":"https://openalex.org/keywords/bit-error-rate","display_name":"Bit error rate","score":0.3538472056388855},{"id":"https://openalex.org/keywords/wavelength-division-multiplexing","display_name":"Wavelength-division multiplexing","score":0.35384589433670044},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.31971389055252075},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.09994128346443176}],"concepts":[{"id":"https://openalex.org/C76808792","wikidata":"https://www.wikidata.org/wiki/Q1152323","display_name":"Terabit","level":4,"score":0.9328707456588745},{"id":"https://openalex.org/C288623","wikidata":"https://www.wikidata.org/wiki/Q679800","display_name":"Nyquist\u2013Shannon sampling theorem","level":2,"score":0.714241623878479},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.6867501139640808},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.5721375942230225},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.5610144734382629},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5103625655174255},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.5051782727241516},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.44122129678726196},{"id":"https://openalex.org/C186378180","wikidata":"https://www.wikidata.org/wiki/Q4874866","display_name":"Phase-shift keying","level":4,"score":0.43468955159187317},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4312199652194977},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4193941354751587},{"id":"https://openalex.org/C56296756","wikidata":"https://www.wikidata.org/wiki/Q840922","display_name":"Bit error rate","level":3,"score":0.3538472056388855},{"id":"https://openalex.org/C160724564","wikidata":"https://www.wikidata.org/wiki/Q1620670","display_name":"Wavelength-division multiplexing","level":3,"score":0.35384589433670044},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.31971389055252075},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.09994128346443176},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1587/elex.18.20212001","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.18.20212001","pdf_url":"https://www.jstage.jst.go.jp/article/elex/18/7/18_18.20212001/_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.18.20212001","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.18.20212001","pdf_url":"https://www.jstage.jst.go.jp/article/elex/18/7/18_18.20212001/_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":[{"score":0.75,"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G1066851484","display_name":null,"funder_award_id":"26000009","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G2516097875","display_name":null,"funder_award_id":"Grant-in-Aid for Specially Promoted","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G3236194794","display_name":null,"funder_award_id":"Grant-in-Aid","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G3459562248","display_name":null,"funder_award_id":"Grant","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G4874944895","display_name":null,"funder_award_id":"-in-Aid","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"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3133518910.pdf","grobid_xml":"https://content.openalex.org/works/W3133518910.grobid-xml"},"referenced_works_count":39,"referenced_works":["https://openalex.org/W105286987","https://openalex.org/W266189728","https://openalex.org/W1973097234","https://openalex.org/W2005807279","https://openalex.org/W2009536753","https://openalex.org/W2017932311","https://openalex.org/W2021314842","https://openalex.org/W2026867111","https://openalex.org/W2035424713","https://openalex.org/W2042998181","https://openalex.org/W2058890034","https://openalex.org/W2063457246","https://openalex.org/W2070371629","https://openalex.org/W2073877682","https://openalex.org/W2075078459","https://openalex.org/W2085745316","https://openalex.org/W2106962065","https://openalex.org/W2111726746","https://openalex.org/W2145449487","https://openalex.org/W2150834777","https://openalex.org/W2233281460","https://openalex.org/W2332630656","https://openalex.org/W2514276170","https://openalex.org/W2598448906","https://openalex.org/W2606534035","https://openalex.org/W2900512983","https://openalex.org/W2905640833","https://openalex.org/W2936852976","https://openalex.org/W2955494574","https://openalex.org/W2986583757","https://openalex.org/W3012435391","https://openalex.org/W3036113356","https://openalex.org/W3036275819","https://openalex.org/W3094350720","https://openalex.org/W3111575504","https://openalex.org/W3112191083","https://openalex.org/W3145884462","https://openalex.org/W3179741851","https://openalex.org/W4245327274"],"related_works":["https://openalex.org/W1956569559","https://openalex.org/W2801319444","https://openalex.org/W2112598792","https://openalex.org/W2546782921","https://openalex.org/W1536684921","https://openalex.org/W2538869597","https://openalex.org/W3204551534","https://openalex.org/W2152403771","https://openalex.org/W4298872595","https://openalex.org/W1585651260"],"abstract_inverted_index":{"We":[0,62,102,159],"present":[1,64,161],"recent":[2,105],"progress":[3,30],"and":[4,34,43,57,75,79,97,123],"challenges":[5,46],"toward":[6],"ultrahigh-speed":[7],"optical":[8,22,72],"time-division":[9],"multiplexed":[10],"(OTDM)":[11],"transmission":[12,37,78,115,131,170,203],"with":[13,150,204],"a":[14,53,58,108,124,151,162,201,205],"single-channel":[15,109],"bit":[16,55,95,143,195],"rate":[17,56,96,144,196],"beyond":[18],"10":[19,168],"Tbit/s":[20,111,126,149,164,207],"using":[21,119,135],"Nyquist":[23,73,83,121,137,175,184],"pulses.":[24],"First,":[25],"we":[26,145],"review":[27],"the":[28,39,45,141],"technological":[29],"made":[31],"on":[32],"OTDM/ETDM":[33],"digital":[35],"coherent":[36,82,136],"over":[38,116,132,177,210],"last":[40],"20":[41],"years":[42],"highlight":[44],"that":[47,68,81,183],"must":[48],"be":[49],"met":[50],"to":[51],"achieve":[52],"higher":[54,59],"spectral":[60,99,152],"efficiency.":[61],"then":[63],"our":[65,104],"proposed":[66],"scheme":[67],"consists":[69],"of":[70,90,107,171],"an":[71,92,192],"pulse":[74],"its":[76],"OTDM":[77],"show":[80],"pulses":[84,176,185],"are":[85,186],"very":[86],"attractive":[87],"in":[88,139],"terms":[89],"realizing":[91,200],"extremely":[93,193],"high":[94,98,155,194],"efficiency":[100,153],"simultaneously.":[101],"describe":[103],"demonstrations":[106],"10.2":[110],"(2.56":[112],"Tbaud)":[113,128],"DQPSK":[114,174],"300":[117],"km":[118,134],"non-coherent":[120],"pulses,":[122,138],"15.3":[125,148],"(1.28":[127,165],"64":[129],"QAM":[130],"160":[133],"which":[140],"highest":[142],"achieved":[146],"was":[147],"as":[154,156],"8.7":[157],"bit/s/Hz.":[158],"also":[160,198],"12.8":[163],"Tbit/s/ch":[166],"\u00d7":[167],"ch)":[169],"320":[172],"Gbaud":[173],"1500":[178],"km.":[179],"These":[180],"results":[181],"indicate":[182],"advantageous":[187],"not":[188],"only":[189],"for":[190,199],"achieving":[191],"but":[197],"WDM":[202],"1":[206],"channel":[208],"capacity":[209],"long":[211],"distances.":[212]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1}],"updated_date":"2026-04-10T15:06:20.359241","created_date":"2025-10-10T00:00:00"}