イトウ　マサユキ   ITOH MASAYUKI   伊東 雅之    所属   医療保健学部 臨床工学科    職種   教授
言語種別	英語
発行・発表の年月	2022/12
形態種別	国際会議論文
査読	査読あり
招待論文	招待あり
標題	High Optical Confinement Waveguides for High-speed Wide-bandwidth data Transmission and Healthcare data Transmission for Future Networks
執筆形態	単著
掲載誌名	INTERPHOTONICS 2022 Abstract Book
掲載区分	国外
出版社・発行元	Acta Materialia Turcica
巻・号・頁	2022,pp.14
担当区分	筆頭著者
概要	Silica-based planar lightwave circuits (PLCs) are key devices for optical communication networks based on optical transmission systems, which are for not only backbone use but also metropolitan and access networks. PLC devices have advantage in propagation loss and fiber coupling loss because they are made by silica as the same material as optical fibers. PLC devices, especially silica-based arrayed waveguide gratings (AWGs) for wavelength multi/demultiplexing, power splitters for branching the optical signal, optical switches for selecting from one circuit to another have been playing a key role in practical transmission systems. In these systems, it is expected to make PLC devices compact and highly-integrated on a single-chip in order to decrease cost in fabrication and increase channel number. To realize them, it is very important to reduce the size of the devices such as AWGs. For example, even when the refractive index difference Δ of the waveguide is 2.5 %, bent waveguides with a large curvature radius of one millimeter occupy a large area in a package. This prevents increasing the packaging density of the devices. One way to overcome this problem is to use extremely high-Δ (>2.5%) waveguides that can be bent compactly. This talk focuses on the development of high optical confinement waveguides which are used for PLC devices as extremely high-Δ waveguides, and also healthcare data transmission for possible future networks is discussed.