ホットバキューム法による多成分ガラスフォトニッククリスタルロッドの作製

概要

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We have fabricated a photonic crystal rod (PCR), which is a novel optical connecting component with a two-dimensional photonic crystal structure, by drawing a preform made of a multicomponent alkali-borosilicate glass. A hot vacuum (725℃, 10hPa) stacking method was developed for the fabrication of the preform, which enables self-organization of the inner structure of the preform. PCRs with sub-micrometer dimensional accuracy were successfully fabricated by drawing the preform at 820℃, which is a much lower temperature than that used for the drawing of silica glass. The PCRs showed single-mode optical propagation at both wavelengths of 633 and 1550nm with mode field diameters (MFDs) of 23.1 and 33.4μm, respectively. The bending strength of the PCR reached 850MPa after ion-exchange treatment. PCR is expected to be a candidate for precision, high-strength, endlessly single-mode novel optical connecting components with large MFDs.
社団法人日本セラミックス協会の論文
2005-05-01