发明名称 |
Step index optical fiber with doped cladding and core, a preform, and a method of fabricating such a fiber |
摘要 |
The invention provides a step index optical fiber which presents cladding having an index lower than the index of silica and a core with an index higher than the index of silica. The fiber is obtained by drawing a preform made by chemical vapor deposition using a deposition tube of index lower than the index of silica. Inner cladding of index substantially equal to the index of the deposition tube, and then a core of index higher than the index of the inner cladding are deposited in succession therein. The invention makes it possible to obtain a fiber having a large effective area, reduced attenuation, and suitable for being fabricated at low cost by chemical vapor deposition.
|
申请公布号 |
US6904213(B2) |
申请公布日期 |
2005.06.07 |
申请号 |
US20020136297 |
申请日期 |
2002.05.02 |
申请人 |
ALCATEL |
发明人 |
FLEURY LUDOVIC;DE MONTMORILLON LOUIS-ANNE;BEAUMONT FLORENT;SILLARD PIERRE;GORLIER MAXIME;NOUCHI PASCALE;CAMPION JEAN-FLORENT;LABATUT CHRISTINE |
分类号 |
C03B37/012;C03B37/018;G02B6/02;G02B6/036;(IPC1-7):G02B6/02 |
主分类号 |
C03B37/012 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|