发明名称 |
Optical fiber and evaluation method thereof |
摘要 |
An optical fiber characterized by a cutoff wavelength of 1310 nm or less, a transmission loss of 0.40 dB/km or less at the wavelength of 1385 nm before hydrogen ageing, a transmission loss of 0.40 dB/km or less in the wavelength range of 1310 nm to 1625 nm after hydrogen ageing, and an electron spin density of the Non-Bridging Oxygen Hole Center of 1x10 <13 >spins/g or less measured by the electron spin resonance method after the diameter of the optical fiber is made to be about 50 mum by etching in diluted hydrofluoric acid, that having high reliability of hydrogen-proof characteristic suitable for WDM transmission in 1310 nm to 1625 nm and the method of evaluating the optical fiber are offered.
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申请公布号 |
US2004047576(A1) |
申请公布日期 |
2004.03.11 |
申请号 |
US20030411378 |
申请日期 |
2003.04.11 |
申请人 |
KURUSU KAZUHIKO;MORIDAIRA HIDEYA;KUWABARA MASAHIDE;ISHIDA YOSHINORI |
发明人 |
KURUSU KAZUHIKO;MORIDAIRA HIDEYA;KUWABARA MASAHIDE;ISHIDA YOSHINORI |
分类号 |
C03B37/027;C03C25/60;G02B6/02;(IPC1-7):G02B6/16 |
主分类号 |
C03B37/027 |
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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