E. Coscelli, F. Poli, Mette M. Joergensen, M. Laurila, J. Lægsgaard, T. Alkeskjold, L. Leick, J. Broeng, A. Cucinotta, S. Selleri
{"title":"Thermal effects in Yb-doped double-cladding Distributed Modal Filtering rod-type fibers","authors":"E. Coscelli, F. Poli, Mette M. Joergensen, M. Laurila, J. Lægsgaard, T. Alkeskjold, L. Leick, J. Broeng, A. Cucinotta, S. Selleri","doi":"10.1109/ICTON.2012.6253896","DOIUrl":null,"url":null,"abstract":"The effects of thermally-induced refractive index change in Yb-doped Distributed Modal Filtering (DMF) photonic crystal fibers are investigated, where high-order mode suppression is obtained by resonant coupling with high index elements in the cladding. The temperature distribution on the fiber cross-section is calculated with an analytical model, for different pump power values. The consequent refractive index change, due to the thermo-optical effect, is applied to the cross-section of the DMF fiber, whose guiding properties are studied with a full-vector modal solver based on the finite element method. A DMF fiber design, which is single-mode in the 1030 nm-1064 nm region, is considered, and the effects of thermal load on the transmission characteristics are evaluated. Results show a blue-shift of the single-mode window and the single-mode bandwidth narrowing as the absorbed pump power becomes higher.","PeriodicalId":217442,"journal":{"name":"2012 14th International Conference on Transparent Optical Networks (ICTON)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 14th International Conference on Transparent Optical Networks (ICTON)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICTON.2012.6253896","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The effects of thermally-induced refractive index change in Yb-doped Distributed Modal Filtering (DMF) photonic crystal fibers are investigated, where high-order mode suppression is obtained by resonant coupling with high index elements in the cladding. The temperature distribution on the fiber cross-section is calculated with an analytical model, for different pump power values. The consequent refractive index change, due to the thermo-optical effect, is applied to the cross-section of the DMF fiber, whose guiding properties are studied with a full-vector modal solver based on the finite element method. A DMF fiber design, which is single-mode in the 1030 nm-1064 nm region, is considered, and the effects of thermal load on the transmission characteristics are evaluated. Results show a blue-shift of the single-mode window and the single-mode bandwidth narrowing as the absorbed pump power becomes higher.