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    Low attenuation optical fiber and its producing method in MCVD
    2.
    发明授权
    Low attenuation optical fiber and its producing method in MCVD 失效
    低衰减光纤及其在MCVD中的制造方法

    公开(公告)号：US07391946B2

    公开(公告)日：2008-06-24

    申请号：US11630051

    申请日：2004-07-07

    申请人： Chan-Joo Lee ,  Ki-Wan Jang ,  Young-Beom Seo

    发明人： Chan-Joo Lee ,  Ki-Wan Jang ,  Young-Beom Seo

    IPC分类号： G02B6/02 ,  C03B37/018

    CPC分类号： C03B37/01807 ,  C03B37/01853 ,  C03B2201/075 ,  C03B2201/31 ,  G02B6/03622 ,  G02B6/03694

    摘要： Disclosed is a low-attenuation single-mode optical fiber having a photoconductive core and a clad, which shows very low OH concentration in MFD (Mode Field Diameter) region. The optical fiber includes a core positioned at its center for photoconduction, and a dehydrated clad and a base clad which are coated on the clad in order. The dehydrated clad has a substantially identical refractive index to the base clad. A refractive index of the core is greater than those of the dehydrated clad and the base clad. The dehydrated clad has a relatively lower OH concentration than the base clad. The region composed of the core and the dehydrated clad has an MFD region at which OH concentration is less than 0.8 ppb.

    摘要翻译： 公开了一种具有光导芯和包层的低衰减单模光纤，其在MFD（模场直径）区域中显示出非常低的OH浓度。 光纤包括位于其中心的用于感光的芯，以及依次涂覆在包层上的脱水包层和基底包层。 脱水包层具有与基底包层基本相同的折射率。 芯的折射率大于脱水包层和基底包层的折射率。 脱水包层的OH浓度比底层包层低。 由核心和脱水包层组成的区域具有OH浓度小于0.8ppb的MFD区域。

    Optical fiber for optical amplifier and process for manufacturing thereof
    3.
    发明授权
    Optical fiber for optical amplifier and process for manufacturing thereof 失效
    光放大器用光纤及其制造方法

    公开(公告)号：US07440672B2

    公开(公告)日：2008-10-21

    申请号：US10514102

    申请日：2003-05-13

    申请人： Young-beom Seo ,  Jae-hong Lim ,  Dae-weon Kim

    发明人： Young-beom Seo ,  Jae-hong Lim ,  Dae-weon Kim

    IPC分类号： G02B6/00 ,  H01S3/00 ,  H04B10/12

    CPC分类号： C03C13/045 ,  C03B37/01838 ,  C03B2201/34 ,  C03B2201/36 ,  C03C2201/12 ,  C03C2201/31 ,  C03C2201/34 ,  C03C2201/3482 ,  C03C2201/36 ,  H01S3/06754

    摘要： The present invention relates to an optical fiber for an optical amplifier and a method for manufacturing the same, which can be applied to an optical transmission system in the S-band area (4130 nm-1530 nm). According to the present invention, silica is used as a base material and the optical fiber for an optical amplifier contains Tm3+ ions and metal ions in a first core layer formed on an inner surface of a second core layer using the MCVD (Modified Chemical Vapor Deposition) method and a solution doping method whereby the practicability and productivity of the optical fiber are remarkably improved.

    摘要翻译： 本发明涉及一种用于光放大器的光纤及其制造方法，其可应用于S波段区域（4130nm-1530nm）中的光传输系统。 根据本发明，使用二氧化硅作为基材，光放大用光纤在使用MCVD（改性化学气相沉积）的第二芯层的内表面上形成的第一芯层中含有Tm3 +离子和金属离子 ）方法和溶液掺杂方法，从而显着提高了光纤的实用性和生产率。

    Low Attenuation Optical Fiber and Its Producing Method in Mcvd
    4.
    发明申请
    Low Attenuation Optical Fiber and Its Producing Method in Mcvd 失效
    低衰减光纤及其在Mcvd中的生产方法

    公开(公告)号：US20080050079A1

    公开(公告)日：2008-02-28

    申请号：US11630051

    申请日：2004-07-07

    申请人： Chan-Joo Lee ,  Ki-Wan Jang ,  Young-Beom Seo

    发明人： Chan-Joo Lee ,  Ki-Wan Jang ,  Young-Beom Seo

    IPC分类号： G02B6/036 ,  C03B37/018

    CPC分类号： C03B37/01807 ,  C03B37/01853 ,  C03B2201/075 ,  C03B2201/31 ,  G02B6/03622 ,  G02B6/03694

    摘要： Disclosed is a low-attenuation single-mode optical fiber having a photoconductive core and a clad, which shows very low OH concentration in MFD (Mode Field Diameter) region. The optical fiber includes a core positioned at its center for photoconduction, and a dehydrated clad and a base clad which are coated on the clad in order. The dehydrated clad has a substantially identical refractive index to the base clad. A refractive index of the core is greater than those of the dehydrated clad and the base clad. The dehydrated clad has a relatively lower OH concentration than the base clad. The region composed of the core and the dehydrated clad has an MFD region at which OH concentration is less than 0.8 ppb.

    摘要翻译： 公开了一种具有光导芯和包层的低衰减单模光纤，其在MFD（模场直径）区域中显示出非常低的OH浓度。 光纤包括位于其中心的用于感光的芯，以及依次涂覆在包层上的脱水包层和基底包层。 脱水包层具有与基底包层基本相同的折射率。 芯的折射率大于脱水包层和基底包层的折射率。 脱水包层的OH浓度比底层包层低。 由核心和脱水包层组成的区域具有OH浓度小于0.8ppb的MFD区域。