发明名称 |
Optical waveguide grating and method of making the same |
摘要 |
In an optical waveguide grating in an optical fiber having a cladding region around a core region, a periodic refractive index distribution is existed in a predetermined area of the core region along the optical axis. The core region has a composition of GeO2-P2O5-SiO2 based glass, for example, whereas the cladding region is made of SiO2, and the co-doping ratio in the core region is adjusted, so as to lower the temperature dependence of characteristics. The doping amount of P2O5 in the core region is preferably 1/15 to 1 times, more preferably 0.6 to 1 times that of GeO2.
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申请公布号 |
US6580854(B1) |
申请公布日期 |
2003.06.17 |
申请号 |
US20000615955 |
申请日期 |
2000.07.13 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
ENOMOTO TADASHI;ISHIKAWA SHINJI;SHIGEHARA MASAKAZU;HARUMOTO MICHIKO |
分类号 |
G02B5/18;G02B6/12;G02B6/34;(IPC1-7):G02B6/34 |
主分类号 |
G02B5/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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