发明名称 |
Method of and apparatus for expanding mode field diameter of optical fiber |
摘要 |
A method of and an apparatus for expanding the mode field diameter of an optical fiber by heating a specified region of the optical fiber with a uniform or desired temperature distribution for forming a thermally-diffused expanded core (TEC). The mode field diameter of the optical fiber is expanded by heating an optical fiber 1 with a burner 11 so as to thermally diffuse the dopant forming the refractive-index profile. The burner 11 has a heating surface 11a in which a plurality of gas-issuing holes 12 are arranged such that a plurality of parallel rows each of which is composed of a plurality of gas-issuing holes 12 are parallel to the axis of the optical fiber 1.
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申请公布号 |
US2004017987(A1) |
申请公布日期 |
2004.01.29 |
申请号 |
US20030383751 |
申请日期 |
2003.03.10 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
YAMADA EIICHIRO;SAITO KAZUHITO;TAMURA MITSUAKI |
分类号 |
G02B6/02;G02B6/255;(IPC1-7):G02B6/16;G02B6/18 |
主分类号 |
G02B6/02 |
代理机构 |
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代理人 |
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地址 |
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