公开(公告)号：US5559921A

公开(公告)日：1996-09-24

申请号：US478089

申请日：1995-06-07

申请人： Yoshiaki Terasawa ,  Yuji Kubo

发明人： Yoshiaki Terasawa ,  Yuji Kubo

IPC分类号： G02B6/036 ,  G02B6/02 ,  G02B6/18

CPC分类号： G02B6/03661 ,  G02B6/02042 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03633 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/02009 ,  G02B6/02238

摘要： A single mode optical fiber of the present invention includes an inner core portion having a diameter of 2a and a refractive index n.sub.1, an outer core portion having a diameter of 2b and a refractive index n.sub.2 which is smaller than the refractive index n.sub.1 of the inner core portion, the outer core being disposed around the inner core, a clad portion disposed around the outer core portion having a refractive index n.sub.0. The single mode optical fiber satisfies relations of: 0.70%.ltoreq..DELTA.n.sub.1 .ltoreq.1.2%, 0.12.ltoreq..DELTA.n.sub.2 /.DELTA.n.sub.1 .ltoreq.0.16, and 0.15.ltoreq.2a/2b.ltoreq.0.25; 0.70%.ltoreq..DELTA.n.sub.1 .ltoreq.0.85%, 0.06.ltoreq..DELTA.n.sub.2 /.DELTA.n.sub.1 .ltoreq.0.12, and 0.20.ltoreq.2a/2b.ltoreq.0.28; or .DELTA.n.sub.1 .ltoreq.0.7%, 0.06.ltoreq..DELTA.n.sub.2 /.DELTA.n.sub.1 .ltoreq.0.16, and 0.15.ltoreq.2a/2b.ltoreq.0.3; where .DELTA.n.sub.1 =(n.sub.1.sup.2 -n.sub.0.sup.2)/n.sub.1.sup.2, and .DELTA.n.sub.2 =(n.sub.2.sup.2 -n.sub.0.sup.2)/n.sub.2.sup.2.

摘要翻译： 本发明的单模光纤包括直径为2a的内芯部分和折射率n1，外芯部分的直径为2b，折射率n2小于内部的折射率n1 所述外芯设置在所述内芯周围，覆盖部设置在所述外芯部周围，所述外芯部具有折射率n0。 单模光纤满足以下关系：0.70％

公开(公告)号：US4990433A

公开(公告)日：1991-02-05

申请号：US378041

申请日：1989-07-11

申请人： Katsuhira Yoshida ,  Yuji Kubo

发明人： Katsuhira Yoshida ,  Yuji Kubo

IPC分类号： B41M5/26 ,  C07D215/38 ,  C09B53/02 ,  G11B7/24 ,  G11B7/244 ,  G11B7/249

CPC分类号： C07D215/38 ,  G11B7/246 ,  G11B7/2498 ,  G11B7/2533 ,  G11B7/2534 ,  Y10S430/146

摘要： An optical recording medium of a metal-containing indoaniline compound having the formula: ##STR1## wherein M is a metal atom selected from the group consisting of Ni, Cu or Co, R.sup.1 is a hydrogen atom, a halogen atom or a methyl group, n is 1 or 2, X is a hydrogen atom or a lower alkyl group, each of R.sup.2 and R.sup.3 is a lower alkyl group, and Z.sup.- is an anion, as a dye on a substrate.