二重クラッドと中空円形ピットを持つ偏波スプリッタの特性解析

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2013/05/01

タイトル(英語): Characteristic Analysis of Polarization Splitter with Doubly Clad and a Circular Hollow Pit

著者名: 亀田　和則（佐野短期大学総合キャリア教育学科），古川　慎一（日本大学理工学部電気工学科）

著者名(英語): Kazunori Kameda (Department of Career Studies, Sano College), Shinichi Furukawa (Department of Electrical Engineering, College of Science and Technology, Nihon University)

キーワード: 結合，光ファイバ，改良点整合法，モード結合理論，偏波スプリッタ　　coupling，optical fiber，improved point matching method，coupled mode theory，polarization splitter

要約(英語): The coupling characteristics of the optical fiber with a circular hollow pit is important in order to design a fiber device. The optical fiber with a circular hollow pit can separate x-polarization and y-polarization. The polarization splitter constructed from the optical fiber with a circular hollow pit can take out x-polarization and y-polarization separately due to the difference of coupling strengths of polarization. We propose a new polarization splitter. One-half of new polarization splitter is used for a depressed clad fiber and the half of new polarization splitter is used for the fiber with a circular hollow pit outside a core. When the width t/a1 of the depressed clad fiber is varied in the range 0.5≦t/a1≦3.0, the device length L and the bandwidth BW-15 at R≦-15dB (R: the extinction ratio) are investigated. It is found at t/a1=3.0 and Δ5=-0.322% that: (1) L takes its minimum value 3.24mm ; (2) BW-15 takes its maximum value 74.9nm.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.5 （2013） 特集：計算電磁気学の進展とその応用

本誌掲載ページ: 249-254 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/133/5/133_249/_article/-char/ja/