RIDGE WAVEGUIDE PATH AND LASER DEVICE

In this invention, first cladding (4) having a lower refractive index than the refractive index of a core (2) is provided at an apical portion (3a) of a ridge structure section (3) formed on the core (2). This configuration allows for the elimination of signal loss which occurs concomitantly to a re...

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Bibliographic Details
Main Authors HIROSAWA, Kenichi, YANAGISAWA, Takayuki, WATANABE, Yojiro, KAMEYAMA, Shumpei, SHODA, Fumio
Format Patent
LanguageEnglish
French
Japanese
Published 20.06.2019
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Summary:In this invention, first cladding (4) having a lower refractive index than the refractive index of a core (2) is provided at an apical portion (3a) of a ridge structure section (3) formed on the core (2). This configuration allows for the elimination of signal loss which occurs concomitantly to a resist coming in direct contact with the core (2). Dans la présente invention, une première gaine (4) ayant un indice de réfraction inférieur à l'indice de réfraction d'un noyau (2) est disposée au niveau d'une partie apicale (3a) d'une section de structure à moulures (3) formée sur le noyau (2). Cette configuration permet l'élimination de perte de signal qui se produit simultanément au contact direct d'une réserve avec le noyau (2). コア(2)の屈折率よりも低い屈折率を有する第1のクラッド(4)が、コア(2)に形成されているリッジ構造部(3)の頂部(3a)に設けられるように構成している。これにより、レジストがコア(2)に直接触れることに伴う信号光の損失を無くすことができる。
Bibliography:Application Number: WO2017JP45133