Optical waveguides – Optical fiber waveguide with cladding – Utilizing nonsolid core or cladding
Patent
1997-12-15
1999-11-30
Lee, John D.
Optical waveguides
Optical fiber waveguide with cladding
Utilizing nonsolid core or cladding
4271632, 427230, 427235, 427239, 4274198, G02B 620
Patent
active
059956968
ABSTRACT:
A solution of a metallic compound or a cyclic olefin polymer is introduced into a metallic pipe to deposit the solution onto the whole inner wall of the metallic pipe followed by heat treatment at a high temperature to dry and solidify the solution, thereby forming a dielectric layer. Thus, a metallic hollow waveguide is prepared which comprises a metallic pipe, a dielectric layer provided on the inner wall of the pipe, and a hollow region defined by the inner wall of the dielectric layer. The above constitution makes it possible to provide a highly reliable hollow waveguide which is usable in a broad waveband, for which a quartz optical fiber is unusable, causes no significant transmission loss, can be mass produced, and can be easily produced in a reduced diameter and in an increased length, and to provide a method of making the same.
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Hongo Akihito
Miyagi Mitsunobu
Hitachi Cable Ltd.
Lee John D.
Mitsunobu Miyagi
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