| 发明名称 |
ERBIUM FILER FOR OPTICAL AMPLIFIER |
| 摘要 |
PURPOSE:To suppress spontaneous emission in an optical amplifier using an erbium-doped fiber. CONSTITUTION:A core 22a is doped at it center with Al. A core and part or all of a clad 22b are doped with erbium thereby to perform the purpose. |
| 申请公布号 |
JPH04291972(A) |
申请公布日期 |
1992.10.16 |
| 申请号 |
JP19910057417 |
申请日期 |
1991.03.20 |
| 申请人 |
FUJITSU LTD |
发明人 |
TAKEDA KEIKO;INAGAKI SHINYA;TAGAWA KENJI;OYAMA OSAMU |
| 分类号 |
G02B6/00;G02F1/35;H01S3/06;H01S3/067;H01S3/07;H01S3/17 |
主分类号 |
G02B6/00 |
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