{"id":"https://openalex.org/W2134248088","doi":"https://doi.org/10.1109/icumt.2009.5345490","title":"Effect of ring parameters on wavelength characteristics of erbium fiber lasers","display_name":"Effect of ring parameters on wavelength characteristics of erbium fiber lasers","publication_year":2009,"publication_date":"2009-10-01","ids":{"openalex":"https://openalex.org/W2134248088","doi":"https://doi.org/10.1109/icumt.2009.5345490","mag":"2134248088"},"language":"en","primary_location":{"id":"doi:10.1109/icumt.2009.5345490","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icumt.2009.5345490","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 International Conference on Ultra Modern Telecommunications & Workshops","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5068365404","display_name":"Rajesh Joseph","orcid":null},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Rajesh Joseph","raw_affiliation_strings":["NeST Group, SFO Technologies, Cochin, India","SFO Technologies, NeST Group, Cocin, India"],"affiliations":[{"raw_affiliation_string":"NeST Group, SFO Technologies, Cochin, India","institution_ids":[]},{"raw_affiliation_string":"SFO Technologies, NeST Group, Cocin, India","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079701258","display_name":"Samuel Varghese","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Samuel Varghese","raw_affiliation_strings":["NeST Group, SFO Technologies, Cochin, India","SFO Technologies, NeST Group, Cocin, India"],"affiliations":[{"raw_affiliation_string":"NeST Group, SFO Technologies, Cochin, India","institution_ids":[]},{"raw_affiliation_string":"SFO Technologies, NeST Group, Cocin, India","institution_ids":[]}]},{"author_position":"middle","author":{"id":null,"display_name":"Suresh Nair","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Suresh Nair","raw_affiliation_strings":["NeST Group, SFO Technologies, Cochin, India","SFO Technologies, NeST Group, Cocin, India"],"affiliations":[{"raw_affiliation_string":"NeST Group, SFO Technologies, Cochin, India","institution_ids":[]},{"raw_affiliation_string":"SFO Technologies, NeST Group, Cocin, India","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083213461","display_name":"M. U. Sreeja","orcid":null},"institutions":[{"id":"https://openalex.org/I20497027","display_name":"Cochin University of Science and Technology","ror":"https://ror.org/00a4kqq17","country_code":"IN","type":"education","lineage":["https://openalex.org/I20497027"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"M Sreeja","raw_affiliation_strings":["International School of Photonics, CUSAT, Cochin, India","International School of Photonics, CUSAT , Cochin, India"],"affiliations":[{"raw_affiliation_string":"International School of Photonics, CUSAT, Cochin, India","institution_ids":["https://openalex.org/I20497027"]},{"raw_affiliation_string":"International School of Photonics, CUSAT , Cochin, India","institution_ids":["https://openalex.org/I20497027"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5068365404"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.1528172,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10205","display_name":"Advanced Fiber Optic Sensors","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/T10205","display_name":"Advanced Fiber Optic Sensors","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/T10232","display_name":"Optical Network Technologies","score":0.9995999932289124,"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/T10846","display_name":"Photonic Crystal and Fiber Optics","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"}}],"keywords":[{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.7508488893508911},{"id":"https://openalex.org/keywords/fiber-laser","display_name":"Fiber laser","score":0.6666953563690186},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.5844286680221558},{"id":"https://openalex.org/keywords/optical-attenuator","display_name":"Optical attenuator","score":0.5396355390548706},{"id":"https://openalex.org/keywords/dispersion-shifted-fiber","display_name":"Dispersion-shifted fiber","score":0.5292248725891113},{"id":"https://openalex.org/keywords/lasing-threshold","display_name":"Lasing threshold","score":0.5071392059326172},{"id":"https://openalex.org/keywords/laser","display_name":"Laser","score":0.5050655007362366},{"id":"https://openalex.org/keywords/erbium","display_name":"Erbium","score":0.4867668151855469},{"id":"https://openalex.org/keywords/wavelength","display_name":"Wavelength","score":0.4826939105987549},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.46583762764930725},{"id":"https://openalex.org/keywords/wavelength-division-multiplexing","display_name":"Wavelength-division multiplexing","score":0.4236585199832916},{"id":"https://openalex.org/keywords/attenuator","display_name":"Attenuator (electronics)","score":0.42103540897369385},{"id":"https://openalex.org/keywords/polarization-maintaining-optical-fiber","display_name":"Polarization-maintaining optical fiber","score":0.41615140438079834},{"id":"https://openalex.org/keywords/fiber","display_name":"Fiber","score":0.3680081367492676},{"id":"https://openalex.org/keywords/fiber-optic-sensor","display_name":"Fiber optic sensor","score":0.2537569999694824},{"id":"https://openalex.org/keywords/doping","display_name":"Doping","score":0.18650013208389282},{"id":"https://openalex.org/keywords/attenuation","display_name":"Attenuation","score":0.1689775586128235},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.09736466407775879}],"concepts":[{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.7508488893508911},{"id":"https://openalex.org/C17163034","wikidata":"https://www.wikidata.org/wiki/Q390528","display_name":"Fiber laser","level":3,"score":0.6666953563690186},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.5844286680221558},{"id":"https://openalex.org/C14650364","wikidata":"https://www.wikidata.org/wiki/Q7098828","display_name":"Optical attenuator","level":4,"score":0.5396355390548706},{"id":"https://openalex.org/C6138904","wikidata":"https://www.wikidata.org/wiki/Q5282578","display_name":"Dispersion-shifted fiber","level":4,"score":0.5292248725891113},{"id":"https://openalex.org/C40637687","wikidata":"https://www.wikidata.org/wiki/Q676237","display_name":"Lasing threshold","level":3,"score":0.5071392059326172},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.5050655007362366},{"id":"https://openalex.org/C513967374","wikidata":"https://www.wikidata.org/wiki/Q1849","display_name":"Erbium","level":3,"score":0.4867668151855469},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.4826939105987549},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.46583762764930725},{"id":"https://openalex.org/C160724564","wikidata":"https://www.wikidata.org/wiki/Q1620670","display_name":"Wavelength-division multiplexing","level":3,"score":0.4236585199832916},{"id":"https://openalex.org/C174847166","wikidata":"https://www.wikidata.org/wiki/Q1269728","display_name":"Attenuator (electronics)","level":3,"score":0.42103540897369385},{"id":"https://openalex.org/C45747243","wikidata":"https://www.wikidata.org/wiki/Q7209154","display_name":"Polarization-maintaining optical fiber","level":4,"score":0.41615140438079834},{"id":"https://openalex.org/C519885992","wikidata":"https://www.wikidata.org/wiki/Q161","display_name":"Fiber","level":2,"score":0.3680081367492676},{"id":"https://openalex.org/C21651689","wikidata":"https://www.wikidata.org/wiki/Q1397427","display_name":"Fiber optic sensor","level":3,"score":0.2537569999694824},{"id":"https://openalex.org/C57863236","wikidata":"https://www.wikidata.org/wiki/Q1130571","display_name":"Doping","level":2,"score":0.18650013208389282},{"id":"https://openalex.org/C184652730","wikidata":"https://www.wikidata.org/wiki/Q2357982","display_name":"Attenuation","level":2,"score":0.1689775586128235},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09736466407775879},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icumt.2009.5345490","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icumt.2009.5345490","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 International Conference on Ultra Modern Telecommunications & Workshops","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.47999998927116394,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1990001351","https://openalex.org/W2001568500","https://openalex.org/W2006953089","https://openalex.org/W2044700006","https://openalex.org/W2049311392","https://openalex.org/W2051661898","https://openalex.org/W2057258269","https://openalex.org/W2057986012","https://openalex.org/W2070609441","https://openalex.org/W2097987373"],"related_works":["https://openalex.org/W1966776684","https://openalex.org/W1555818818","https://openalex.org/W2357072978","https://openalex.org/W2348714449","https://openalex.org/W2048415694","https://openalex.org/W2153106939","https://openalex.org/W2058987226","https://openalex.org/W2934260497","https://openalex.org/W4312537119","https://openalex.org/W2372674948"],"abstract_inverted_index":{"We":[0],"present":[1],"detailed":[2],"experimental":[3],"results":[4],"on":[5,18],"the":[6,34,48,51],"dependence":[7],"of":[8,11,78],"lasing":[9],"wavelength":[10,28,89],"erbium":[12],"doped":[13],"fiber":[14,19,74],"ring":[15],"laser":[16,35],"(EDFRL)":[17],"length,":[20],"feedback":[21,38,81],"coupling":[22],"ratio":[23,39,82],"and":[24,83],"intra-cavity":[25],"loss.":[26],"No":[27],"selective":[29],"elements":[30],"are":[31,69],"included":[32],"in":[33,50],"cavity.":[36,52],"The":[37],"is":[40,55],"varied":[41,56],"from":[42],"1%":[43],"to":[44,58],"99%":[45],"by":[46],"changing":[47],"coupler":[49],"Intra-cavity":[53],"loss":[54,86],"up":[57],"30":[59],"dB":[60],"using":[61],"a":[62],"variable":[63],"optical":[64],"attenuator":[65],"(VOA).":[66],"Output":[67],"characteristics":[68],"studied":[70],"for":[71],"3":[72],"different":[73],"lengths.":[75],"Longer":[76],"length":[77],"fiber,":[79],"higher":[80],"low":[84],"cavity":[85],"provides":[87],"larger":[88],"tuning":[90],"range.":[91]},"counts_by_year":[],"updated_date":"2026-04-17T18:11:37.981687","created_date":"2025-10-10T00:00:00"}