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1. 发明申请

WO2004088377A1 MICROSTRUCTURED OPTICAL FIBRE 审中-公开
标题翻译：微结构光纤
公开(公告)号：WO2004088377A1
公开(公告)日：2004-10-14
申请号：PCT/EP2003/003361
申请日：2003-03-31
申请人： PIRELLI & C. S.p.A. , GAMBIRASIO, Alfredo , TASSONE, Francesco, Maria , TRAVAGNIN, Martino
发明人： GAMBIRASIO, Alfredo , TASSONE, Francesco, Maria , TRAVAGNIN, Martino
IPC分类号： G02B6/16
CPC分类号： G02B6/02333 , C03B37/01205 , C03B2201/12 , C03B2201/28 , C03B2201/31 , C03B2203/14 , C03B2203/42 , G02B6/02014 , G02B6/02242 , G02B6/02266 , G02B6/02357 , G02B6/02361 , G02B6/02366
摘要： Microstructured optical fibre (12) comprising a core region (1) with a material having a refractive index n co and a microstructured region (2), surrounding the core region (1), with a background material having a refractive index n m which is lower than the refractive index n co , the microstructured region (2) comprising a plurality of microstructures (4) having a refractive index different from the refractive index n m , wherein the distance ?φ between the centres of any couple of adjacent microstructures (4) is at least equal to about λ p and not higher than about 1.5λ p , wherein λ p is the spatial variation length of the electric field intensity in the microstructured region (2).
摘要翻译：微结构化光纤（12）包括具有折射率nco的材料的芯区域（1）和包围芯区域（1）的微结构化区域（2），其背景材料的折射率nm低于折射率nco，微结构化区域（2）包括具有不同于折射率nm的折射率的多个微结构（4），其中任何一对相邻微结构（4）的中心之间的距离phi至少相等到约lambdap并且不高于约1.5lambdap，其中lambdap是微结构区域（2）中的电场强度的空间变化长度。

2. 发明申请

WO2004015828A1 OPTICAL FIBER FOR RAMAN AMPLIFICATION 审中-公开
标题翻译：用于拉曼放大的光纤
公开(公告)号：WO2004015828A1
公开(公告)日：2004-02-19
申请号：PCT/EP2002/008383
申请日：2002-07-26
申请人： PIRELLI & C. S.P.A , DAI, Guojun , TASSONE, Francesco, Maria
发明人： DAI, Guojun , TASSONE, Francesco, Maria
IPC分类号： H01S3/30
CPC分类号： H01S3/06754 , C03C3/122 , C03C4/0071 , C03C13/048 , H01S3/094003 , H01S3/177 , H01S3/302
摘要： Raman amplifier comprising an optical fiber (2) which comprises a tellurite glass. The tellurite glass comprises at least two further metal oxides, the metals of said respective two oxides being selected from a first group consisting of Nb, W, Ti, Tl, Ta, and Mo and from a second group Nb, W, Ti, Pb, Sb, In, Bi, Tl, Ta, Mo, Zr, Hf, Cd, Gd, La, Ba. The so obtained fiber (2) have improved optical (Raman gain) and/or thermal (thermal stability index) properties. Alternatively, the tellurite based glass compositions of the fiber comprises at least one additional metal oxide, where the metal is selected among Nb, Ti, Tl, Ta, and Mo, said glass showing a particularly high Raman gain. The maximum Raman gain of these glasses is typically higher than 100 times of the maximum Raman gain of pure silica and the respective total cross-section of the Raman spectrum is typically greater than 100 times than the total cross-section of pure silica, in the frequency measurement range of from 200 cm -1 to 1080 cm -1 .
摘要翻译：拉曼放大器，包括包含碲酸盐玻璃的光纤（2）。该碲化物玻璃包括至少两种另外的金属氧化物，所述相应的两种氧化物的金属选自由Nb，W，Ti，Tl，Ta和Mo组成的第一组和第二组Nb，W，Ti，Pb ，Sb，In，Bi，Tl，Ta，Mo，Zr，Hf，Cd，Gd，La，Ba。如此获得的光纤（2）具有改进的光（拉曼增益）和/或热（热稳定性指数）特性。或者，所述纤维的基于碲酸盐的玻璃组合物包含至少一种另外的金属氧化物，其中所述金属选自Nb，Ti，Tl，Ta和Mo，所述玻璃显示出特别高的拉曼增益。这些玻璃的最大拉曼增益通常高于纯二氧化硅的最大拉曼增益的100倍，并且拉曼光谱的相应总横截面通常大于纯二氧化硅的总横截面的100倍，频率测量范围为200厘米-180厘米-1。

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