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    • 3. 发明公开
    • 광섬유 제조방법
    • 制造光纤的方法
    • KR1020010113819A
    • 2001-12-28
    • KR1020017013355
    • 2000-03-23
    • 코닝 인코포레이티드
    • 버키,죠지,이.스리칸트,브이.
    • G02B6/00
    • G02B6/02009C03B37/0253C03B37/027C03B37/02736C03B2203/06C03B2203/18C03B2203/24C03B2203/36C03B2205/40G02B6/02242G02B6/02247G02B6/0286G02B6/03611G02B6/03644
    • 본발명에따른광섬유는그 길이를따라직경이변하며, 상기섬유의굴절률과직경은 1480nm 이상의파장에서양과음으로분산이교호된영역을만들고, 바람직하게낮은순분산및 분산기울기를갖는다. 바람직한프로파일은클래딩영역으로둘러싸인코어영역으로구성되며, 상기코어영역은클래딩영역에대해업도프된중심코어영역을포함하고, 상기중심코어영역은상기클래딩영역에대해다운도프된외호영역에의해둘러싸이며, 상기외호영역은클래딩영역에대해업도프된환상영역에의해둘러싸인다. 본발명의프로피일군이양과음으로교호되는분산영역과함께사용되면분산기울기가낮은섬유를제조하게된다. 상기프로파일군은통상의 WDM 응용에유용하다.
    • 一种光纤和制造方法,其中所述光纤沿着其长度在具有不同直径的区域之间交替,其中所述坯料的折射率和所述光纤的直径被选择以产生具有正和负分散的交替区域的光纤 在大于1480nm的波长处,优选具有低的净色散和色散斜率。 优选的这种轮廓由包围区域包围的芯区域组成,所述芯区域由相对于所述包层区域上升的中心芯区域组成,所述中心芯区域由相对于所述包层区域下凹的护城河区域围绕 包围区域,并且所述护环区域被相对于所述包层区域上升的环形环区域围绕。 此外,还提供了一系列轮廓,其可用于产生非常低的色散斜率纤维。 当与交替的正和负色散区域结合使用时,可以实现较低的净色散斜率。 或者,轮廓系列在常规WDM应用中是有用的。
    • 8. 发明授权
    • 편광모드분산 저감을 위한 광섬유 모재 제조 방법, 이를이용해 제조된 광섬유 모재 및 이 모재로부터 인선된광섬유
    • 用于偏振模式分散减少的光纤预制件制造方法使用光纤预制件的方法和光纤制造的AMD光纤预制件
    • KR100855800B1
    • 2008-09-01
    • KR1020070048723
    • 2007-05-18
    • 엘에스전선 주식회사
    • 강영주권영일박지상손순일안영준
    • C03B37/01C03B37/018
    • C03B37/01413C03B37/01807C03B2201/12C03B2203/18
    • A fabrication method of optical fiber basic material, an optical fiber basic material manufactured by the method and an optical fiber drawn from the basic material are provided to reduce polarization mode dispersion, to simplify optical fiber drawing process and to improve the mechanical strength of optical fiber by modifying refractive index on the outer layer of the core. A fabrication method of optical fiber basic material comprises a step of carrying out a vapor deposition process comprising forming, lamination and calcination of soot particles in the thermal oxidation of reactant gas and oxygen gas on the surface of an substrate repeatedly depending on the refractive index profile in order to form core layer and clad layer, wherein fluorine gas is diffused locally into the core layer for forming outer layer of the core while the diffuse point of the fluorine gas varies randomly along the longitudinal direction of the basic material. In modified chemical vapor deposition, the reaction gas(50') from the reaction gas supply part(50) is put into the quartz tube(10) which rotates in a direction, the quartz tube is heated with high temperature furnace(60) which is transported to-and-fro along the outer respect of the quartz tube, and then preparing the optical fiber basic material by depositing a glass film which is a clad layer(20) and a core layer(30) repeatedly inside the quartz tube and making the quartz tube solid. When the reaction gas is provided from the reaction gas supply part, a little fluorine gas(40') is provided irregularly from the fluorine gas supply part(40) at the same time. The fluorine gas which is supplied irregularly is diffused to the core layer, and the refractive index in the part having the fluorine gas is locally lowered.
    • 提供光纤基体材料的制造方法,通过该方法制造的光纤基体材料和从基材吸收的光纤,以减少偏振模色散,简化光纤拉丝工艺,提高光纤的机械强度 通过改变芯的外层上的折射率。 光纤碱性材料的制造方法包括进行气相沉积工艺的步骤,包括根据折射率分布重复地在反应物气体和氧气的热氧化反应中重复形成,层压和煅烧烟灰颗粒 为了形成芯层和包覆层,其中氟气局部扩散到用于形成芯的外层的芯层中,而氟气的扩散点沿着基本材料的纵向方向随机地变化。 在改进的化学气相沉积中,将来自反应气体供应部分(50)的反应气体(50')放入沿方向旋转的石英管(10)中,石英管用高温炉(60)加热, 沿着石英管的外侧被来回运送,然后通过在石英管内重复地沉积作为包覆层(20)和芯层(30)的玻璃膜来制备光纤基材,以及 使石英管固体。 当从反应气体供给部提供反应气体时,同时从氟气供给部(40)不规则地设置少量氟气(40')。 不规则地供给的氟气扩散到芯层,并且具有氟气的部分的折射率局部降低。