公开(公告)号：US5712941A

公开(公告)日：1998-01-27

申请号：US658074

申请日：1996-06-04

Applicant: Katsuyuki Imoto ,  Kazuo Koya ,  Jun Abe

Inventor： Katsuyuki Imoto ,  Kazuo Koya ,  Jun Abe

IPC: C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02 ,  G02B6/036 ,  G02B6/04 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/17

CPC classification number: G02B6/03694 ,  C03B37/01222 ,  C03B37/01262 ,  C03B37/01433 ,  C03C13/045 ,  G02B6/03627 ,  G02B6/04 ,  H01S3/06708 ,  C03B2201/36 ,  C03B2203/22 ,  C03B2203/34 ,  C03C2201/36 ,  G02B6/02042 ,  G02B6/0281 ,  H01S3/06729

Abstract: A rare earth element-doped multiple-core optical fiber has an outer cladding layer and a plurality of cores each covered with a primary cladding layer. The cores are positioned substantially on a central axis of the outer cladding layer and separated with a predetermined spacing S from each other by the primary cladding layer. The outer cladding layers are made of SiO.sub.2, or SiO.sub.2 added with a dopant like F, Ge, etc. The primary cladding layer is made of SiO.sub.2 doped with Er, or SiO.sub.2 doped with Er and F together and formed to have a predetermined thickness of 1.0 .mu.m.about.1.5 .mu.m to form the predetermined spacing S. The Soot glass rods for cores and primary cladding layers are immersed in an Er-compound solution, then picked up, dried and consolidated to form Er--Al co-doped SiO.sub.2 --GeO.sub.2 transparent glass rods. The glass rods are inserted into a quartz tube and collapsed by heat to fabricate an optical fiber preform rod, then heated to be drawn to provide an Er-doped multiple-core optical fiber.

Abstract translation: 稀土元素掺杂多芯光纤具有外包层和多个芯，其各自覆盖有初级包覆层。 芯基本上位于外包层的中心轴线上，并以预定间隔S彼此分开由初级包层。 外包层由SiO 2或添加有诸如F，Ge等的掺杂剂的SiO 2制成。初始包层由掺杂有Er或SiO 2的SiO或掺杂有Er和F的SiO 2制成，并且形成为具有预定厚度的 1.0微米差异1.5微米以形成预定的间距S.将用于芯和初级包层的烟灰玻璃棒浸入Er-化合物溶液中，然后拾取，干燥并固化以形成Er-Al共掺杂的SiO 2 - GeO2透明玻璃棒。 将玻璃棒插入石英管并通过加热折叠以制造光纤预制棒，然后加热以拉伸以提供掺铒多芯光纤。

公开(公告)号：US3253174A

公开(公告)日：1966-05-24

申请号：US17984362

申请日：1962-03-15

Applicant: CORNING GLASS WORKS

Inventor： ELMER THOMAS H ,  NORDBERG MARTIN E

IPC: B23K11/24 ,  C03C3/06 ,  C03C4/08 ,  G02B5/20 ,  G02B5/22 ,  G05B19/07 ,  H01K1/28 ,  H01K1/32

CPC classification number: C03C23/0095 ,  B23K11/248 ,  C03C3/06 ,  C03C4/085 ,  C03C2201/3423 ,  C03C2201/36 ,  C03C2201/40 ,  G02B5/208 ,  G02B5/226 ,  G05B19/07 ,  H01K1/28 ,  H01K1/32 ,  H01K1/325