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US 4,453,803 AGranted
Optical waveguide for middle infrared band
AssigneesAgency of Industrial Science and Technology, Ministry of International Trade & Industry
InventorsTakehiko Hidaka, Takitaro Morikawa, Junichi Shimada, Ken Kumata
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Abstract
An optical waveguide for transmission of light in the middle infrared band is produced by having its clad part formed of glass consisting preponderantly of germanium dioxide and its core part left unfilled.
Claims3
In a hollow-core optical waveguide for use in the middle infrared band, the improvement which comprises having a clad part thereof formed of glass consisting preponderantly of germanium dioxide.
Dependencies are inferred from the claim text.