发明名称 |
Image fiber, image fiber preform, and manufacturing processes thereof. |
摘要 |
<p>An image fiber preform for use in an image fiber according to the present invention includes a plurality of optical fiber strands, each optical fiber strand including a silica glass core which contains a dopant for increasing a refractive index of the core and a silica glass cladding surrounding the silica glass core, the silica glass cladding containing a fluorine dopant for decreasing a refractive index of the cladding, the cladding having an outer peripheral surface, and a quartz tube in which the optical fibers are closely arranged, wherein the cladding has a concentration of the fluorine dopant which decreases radially outward toward the outer peripheral surface of the cladding. In the present invention, an image fiber prepared from the image fiber preform and fabrication processes for the image fiber preform and the image fiber are provided.</p> |
申请公布号 |
EP0391742(A2) |
申请公布日期 |
1990.10.10 |
申请号 |
EP19900303742 |
申请日期 |
1990.04.06 |
申请人 |
FUJIKURA LTD. |
发明人 |
TSUMANUMA, TAKASHI;TANAKA, TOSHIYUKI;SHAMOTO, NAOKI;SETO, KATSUYUKI;SANADA, KAZUO;TANAKA, KOUJI |
分类号 |
C03B37/012;C03B37/028;C03C13/04;G02B6/06 |
主分类号 |
C03B37/012 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|