{"title":"强周期调制分布反馈(DFB)激光器理论","authors":"S. Gnepf, H. Preiswerk, F. Kneubühl","doi":"10.1109/ICSWA.1981.9335213","DOIUrl":null,"url":null,"abstract":"DFB (Distributed Feedback) lasers do not use conventional resonator mirrors, but provide feedback via backward Bragg scattering from periodic modulations of refractive index and/or gain of the iaser medium. An important feature is the high spectral selectivity which originates in the Bragg effect and allows selection of longitudinal modes |l|. Hitherto, DFB theories were restricted to small modulations |2,3,4,5|. In this paper, we study the effects of strong DFB modulations on the basis of a complex Hill equation which can be solved analytically. This procedure provides for the first time a direct access to the complex characteristics of future DFB lasers with strong modulations.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Theory on Distributed Feedback (DFB) Lasers with Strong Periodic Modulations\",\"authors\":\"S. Gnepf, H. Preiswerk, F. Kneubühl\",\"doi\":\"10.1109/ICSWA.1981.9335213\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"DFB (Distributed Feedback) lasers do not use conventional resonator mirrors, but provide feedback via backward Bragg scattering from periodic modulations of refractive index and/or gain of the iaser medium. An important feature is the high spectral selectivity which originates in the Bragg effect and allows selection of longitudinal modes |l|. Hitherto, DFB theories were restricted to small modulations |2,3,4,5|. In this paper, we study the effects of strong DFB modulations on the basis of a complex Hill equation which can be solved analytically. This procedure provides for the first time a direct access to the complex characteristics of future DFB lasers with strong modulations.\",\"PeriodicalId\":254777,\"journal\":{\"name\":\"1981 International Conference on Submillimeter Waves and Their Applications\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1981-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1981 International Conference on Submillimeter Waves and Their Applications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICSWA.1981.9335213\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1981 International Conference on Submillimeter Waves and Their Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSWA.1981.9335213","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Theory on Distributed Feedback (DFB) Lasers with Strong Periodic Modulations
DFB (Distributed Feedback) lasers do not use conventional resonator mirrors, but provide feedback via backward Bragg scattering from periodic modulations of refractive index and/or gain of the iaser medium. An important feature is the high spectral selectivity which originates in the Bragg effect and allows selection of longitudinal modes |l|. Hitherto, DFB theories were restricted to small modulations |2,3,4,5|. In this paper, we study the effects of strong DFB modulations on the basis of a complex Hill equation which can be solved analytically. This procedure provides for the first time a direct access to the complex characteristics of future DFB lasers with strong modulations.
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