Silica-based planar lightwave circuits with high resistance against blue light for visible-light application. (1st August 2022)

• Record Type: Journal Article
• Authors: Fujiwara, Yuji; Sakamoto, Junji; Katayose, Satomi; Hashimoto, Toshikazu; Watanabe, Kei
• Is Part Of: Japanese journal of applied physics. Volume 61:Number SK(2022)
• Publication Date: 2022-08-01
• Subjects: silica-based planar lightwave circuits -- visible light -- photoinduced degradation; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/ac71f3
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: We propose two novel types of waveguide, Zr-doped and non-doped silica, for high-power visible-light applications. We fabricated these waveguides and investigated their resistance against blue light. Both Zr-doped and non-doped silica waveguides showed one order of magnitude higher resistance against blue light compared with conventional Ge-doped silica waveguides. A comparison of their resistances indicated that Zr-doped silica waveguides are useful against blue light powers up to about 20 mW and non-doped silica waveguides have more potential for higher resistance against blue light powers over 20 mW.