Up-tapered fiber Mach-Zehnder interferometer fabricated by using a fusion splicer-中国Betway体育网页登陆

摘要 Anup-taperedMach-Zehnderinterferometer(MZI)isproposedanddemonstrated.Byapplyingamodificationsettingofanexistingprogramofthefusionsplicer,twoup-tapersarefabricatedbypushingbothsidesofthefibertothemiddle.Itisfoundthatthemaximumextinctionratioreachesupto20dB.Withthefiberlengthof6.3-49cmbetweenthetwoup-tapers,thefreespectralrange(FSR)changesfrom10.7nmto1.3nm.Besides,thewavelengthofmaximumextinctionratioshiftstotheshorterwavelengthinthescopeoftensofnanometers,whiletheelongationchangesfrom0%to0.23%.

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Up-tapered fiber Mach-Zehnder interferometer fabricated by using a fusion splicer

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