公开(公告)号：US06385384B1

公开(公告)日：2002-05-07

申请号：US09268768

申请日：1999-03-15

Applicant: Huailiang Wei

Inventor： Huailiang Wei

IPC: G02B600

CPC classification number: C03C3/06 ,  C03B37/01433 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/50 ,  C03B2201/54 ,  C03C23/0095 ,  C03C2201/12 ,  C03C2201/31 ,  C03C2201/34 ,  C03C2203/50

Abstract: A non-porous, transparent glass-ceramic body that is consolidated from a predominately silica-based preform (SiO2+GeO2 85-99.0 wt. %) containing rare earth fluoride crystals embedded within by solution chemistry. The glass ceramic body is suited for making fibers for optical amplifiers.

Abstract translation: 一种无孔，透明的玻璃陶瓷体，其主要由含有稀土氟化物晶体的硅基预制体（SiO 2 + GeO 2 85-99.0重量％）固结，其中通过溶液化学方式嵌入。 玻璃陶瓷体适用于制造光放大器的光纤。

公开(公告)号：US06263003B1

公开(公告)日：2001-07-17

申请号：US09191797

申请日：1998-11-13

Applicant: Sidney Xi-Yi Huang ,  Naveen Sarma

Inventor： Sidney Xi-Yi Huang ,  Naveen Sarma

IPC: H01S330

CPC classification number: H01S3/06708 ,  C03B2201/28 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/12 ,  G02B6/03633 ,  H01S3/06795 ,  H01S3/094003

Abstract: A very high power fiber light source can be realized by using a high concentration of doping and by pumping the cladding of the doped fiber. The light that enters the cladding will then enter the core and amplified spontaneous emission will result. With this arrangement, higher power, a broader emission spectrum, and low radiation sensitivity can be achieved. These devices can also be configured as amplifiers.

Abstract translation: 可以通过使用高浓度掺杂和泵浦掺杂光纤的包层来实现非常高功率的光纤光源。 进入包层的光然后将进入核心并且将产生放大的自发发射。 通过这种布置，可以实现更高的功率，更宽的发射光谱和低的辐射灵敏度。 这些器件也可以配置为放大器。

公开(公告)号：US06172817B2

公开(公告)日：2001-01-09

申请号：US09548206

申请日：2000-04-13

Applicant: Udayan Senapati ,  Ho-Shang Lee

Inventor： Udayan Senapati ,  Ho-Shang Lee

IPC: G20B300

CPC classification number: G02B3/0087 ,  C03B23/047 ,  C03B37/023 ,  C03B37/0253 ,  C03B37/027 ,  C03B2201/10 ,  C03B2201/30 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/50 ,  C03B2203/26 ,  C03C3/089 ,  C03C3/095 ,  C03C19/00 ,  C03C21/002 ,  Y02P40/57

Abstract: A non-phase separable glass material for fabricating a GRIN lens comprises 5-20 mole % boron oxide and ratio R of network modifiers in mole % to the network former boron oxide in mole % is in the range of about 1-1.5. The melted preform of such glass material is extruded through an opening to form a glass rod where the extrusion process eliminates bubbles that may be present in the preform. Neodymium oxide may be added in the frit material for forming the preform to reduce friction forces in the extrusion process and reduces the stress in the glass rod. Centerless grinding may be performed to control the diameter and roughness of the surface of the rod to control the diffusion parameters during the subsequent ion-exchange.

Abstract translation: 用于制造GRIN透镜的非相分离玻璃材料包含5-20摩尔％的氧化硼，并且以摩尔％计的网络改性剂的摩尔％与网络形成的氧化硼的比率R在约1-1.5的范围内。 这种玻璃材料的熔融预成型件通过开口挤出以形成玻璃棒，其中挤出工艺消除了可能存在于预制件中的气泡。 可以在用于形成预成型件的玻璃料材料中加入氧化钕以减少挤出过程中的摩擦力并降低玻璃棒中的应力。 可以进行无心磨削以控制棒的表面的直径和粗糙度，以便在随后的离子交换期间控制扩散参数。

公开(公告)号：US5949941A

公开(公告)日：1999-09-07

申请号：US976003

申请日：1997-11-21

Applicant: David John DiGiovanni

Inventor： David John DiGiovanni

IPC: G02B6/02 ,  G02B6/024 ,  G02B6/036 ,  G02B6/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/07

CPC classification number: G02B6/03622 ,  G02B6/02395 ,  G02B6/105 ,  H01S3/06708 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/12 ,  C03B2203/30 ,  G02B6/03638 ,  H01S3/06729 ,  H01S3/094003

Abstract: A cladding-pumped fiber structure is disclosed in which mode mixing of pump light injected into the fiber is induced by index modulation. In one embodiment, the index modulation is created by a stress-inducing region disposed in the cladding which simultaneously maintains the polarization within the core to produce a polarization-maintaining fiber useful for multi-mode and laser applications.

Abstract translation: 公开了一种包覆泵浦的纤维结构，其中通过折射率调制来引入注入光纤的泵浦光的模式混合。 在一个实施例中，折射率调制由设置在包层中的应力诱导区域产生，其同时保持芯内的偏振，以产生用于多模和激光应用的偏振保持光纤。

公开(公告)号：US5930436A

公开(公告)日：1999-07-27

申请号：US868397

申请日：1997-06-03

Applicant: Koji Okamura ,  Keiko Takeda

Inventor： Koji Okamura ,  Keiko Takeda

IPC: G02B6/036 ,  C03B37/012 ,  C03B37/018 ,  C03C13/04 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  G02B6/22

CPC classification number: G02B6/02042 ,  C03B37/01211 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/01861 ,  C03C13/045 ,  H01S3/06708 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/42 ,  C03B2203/29 ,  H01S3/06729

Abstract: An optical amplifying fiber including a clad, a first core provided inside the clad and containing Ge, a second core provided inside the first core and containing Er and Al, and a third core provided inside the second core and containing Ge. The second core has a refractive index higher than that of the clad, and the first and third cores have refractive indexes each of which is higher than that of the second core. Since the third core having the high refractive index is provided at a central portion, it is possible to make smaller a mode field diameter and hence to improve a conversion efficiency of pumping light into signal light. Further, since the second core contains Al as an amplification band width increasing element, it is possible to sufficiently ensure a wide amplification band width.

Abstract translation: 一种光学放大光纤，包括：包层，设置在所述包层内并包含Ge的第一芯，设置在所述第一芯内并包含Er和Al的第二芯和设置在所述第二芯内并且包含Ge的第三芯。 第二芯的折射率高于包层的折射率，第一和第三芯具有高于第二芯的折射率。 由于具有高折射率的第三纤芯设置在中心部分，所以可以使模场直径变小，从而提高泵浦光转换为信号光的转换效率。 此外，由于第二芯包含Al作为放大带宽增加元件，因此可以充分确保宽的放大带宽。

公开(公告)号：US5822487A

公开(公告)日：1998-10-13

申请号：US937943

申请日：1997-09-25

Applicant: Alan F. Evans ,  Daniel A. Nolan

Inventor： Alan F. Evans ,  Daniel A. Nolan

IPC: G02B6/02 ,  C03B37/027 ,  C03B37/03 ,  C03C25/10 ,  G02B6/10 ,  H01S3/067 ,  H01S3/07 ,  H01S3/17 ,  G02B6/16

CPC classification number: G02B6/105 ,  C03B37/027 ,  C03B37/02745 ,  C03B37/03 ,  C03B37/032 ,  C03C25/106 ,  H01S3/06708 ,  C03B2201/34 ,  C03B2203/24 ,  C03B2203/36 ,  C03B2205/06

Abstract: A single mode optical fiber suitable for use in an amplified fiber optic system which includes an inner glass core doped with a rare earth element and an outer transparent glass cladding. The fiber exhibits a plurality of mode coupling sites formed at regular intervals along the length of the fiber which provides for a reduced DOP. The sites are formed by a twist at regular intervals along the fiber length by applying a torque to the fiber. The method of forming the fiber is also disclosed.

Abstract translation: 一种适用于放大光纤系统的单模光纤，其包括掺杂有稀土元素的内玻璃芯​​和外透明玻璃包层。 纤维表现出沿着纤维的长度以规则的间隔形成的多个模式耦合位置，其提供减少的DOP。 通过向纤维施加扭矩，沿着纤维长度以规则的间隔形成这些部位。 还公开了形成纤维的方法。

公开(公告)号：US5711903A

公开(公告)日：1998-01-27

申请号：US698287

申请日：1996-08-14

Applicant: Takeshi Yagi ,  Masato Oku ,  Takayuki Morikawa ,  Tsuguo Sato ,  Kazuaki Yoshida

Inventor： Takeshi Yagi ,  Masato Oku ,  Takayuki Morikawa ,  Tsuguo Sato ,  Kazuaki Yoshida

IPC: C01B33/12 ,  C03B37/012 ,  B29D11/00 ,  B27N3/00 ,  B29C59/00

CPC classification number: C01B33/126 ,  C01B33/12 ,  C03B37/0128 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/42

Abstract: The present invention provides a method of manufacturing a porous preform for an optical fiber, including the steps of removing impure particles from silica powder while being stirred in an alkaline liquid phase, and obtaining the porous preform for an optical fiber by applying the powder forming method to the silica powder used as a main raw material. The present invention further has a method of manufacturing a porous preform for an optical fiber, including the step of preparing a forming material by adding fine particles having a particle diameter satisfying the following formula (I) to the silica powder, and obtaining the porous preform by applying the powder forming method to the forming material: ##EQU1## wherein d: diameter of fine particles, and D: diameter of silica powder.

Abstract translation: 本发明提供一种制造光纤用多孔预成型体的方法，包括以下步骤：在碱性液相中搅拌的同时从二氧化硅粉末中除去不纯的颗粒，并通过施加粉末形成方法获得光纤用多孔预成型体 以二氧化硅粉末为主要原料。 本发明还涉及一种制造光纤用多孔预成型体的方法，包括通过将具有下述通式（I）的粒径的微粒添加到二氧化硅粉末中而制备成形材料的步骤，得到多孔预成型体 通过对成形材料施加粉末形成方法：其中d：细颗粒直径，D：二氧化硅粉末的直径。

公开(公告)号：US5711782A

公开(公告)日：1998-01-27

申请号：US694795

申请日：1996-08-09

Applicant: Kouji Okamura ,  Tadao Arima

Inventor： Kouji Okamura ,  Tadao Arima

IPC: C03B37/018 ,  C03B37/014

CPC classification number: C03B37/01838 ,  C03B37/01815 ,  C03B2201/34 ,  C03B2201/36

Abstract: A first process of the invention comprises forming two constricted portions (28) at a quartz reaction tube (4), charging a solution of a compound of a rare earth element as a solution into the section between the constricted portions (28) for doping. By this, the doping concentration becomes uniform along the length of an optical fiber preform (30) with defects being rarely produced. This process does not involve any complicated operation. A second process of the invention comprises impregnating a solution in the form of a mist in a soot-like core glass (26) by which it becomes possible to control the doping concentration in high accuracy. A third process of the invention comprises impregnating a solution while controlling the concentration in response to a quantity of a transmitted laser beam through a soot-like core glass (26), by which the doping concentration is ensured independently of the density of the soot-like core glass. A fourth process of the invention comprises repeating formation of a soot-like core glass (26) at different temperatures, by which a distribution of a doping concentration along the radial direction of the core can be arbitrarily set.

Abstract translation: 本发明的第一方法包括在石英反应管（4）处形成两个收缩部分（28），将稀土元素化合物溶液作为溶液加入到收缩部分（28）之间用于掺杂的部分中。 由此，掺杂浓度沿着光纤预制棒（30）的长度均匀，缺陷很少产生。 该过程不涉及任何复杂的操作。 本发明的第二种方法包括将烟雾形式的溶液浸渍在烟灰状芯玻璃（26）中，由此可以高精度地控制掺杂浓度。 本发明的第三个方法包括浸渍溶液，同时响应于通过烟灰状核心玻璃（26）的透射激光束的量来控制浓度，由此确保独立于烟灰 - 像核心玻璃。 本发明的第四个方法包括在不同温度下重复形成烟灰状核心玻璃（26），通过该方法可以任意地设定沿芯的径向方向的掺杂浓度分布。

公开(公告)号：US5710852A

公开(公告)日：1998-01-20

申请号：US462702

申请日：1995-06-05

Applicant: Dieter Weber

Inventor： Dieter Weber

IPC: G02B6/00 ,  C03B37/018 ,  C23C16/30 ,  H01S3/06 ,  H01S3/067 ,  H01S3/17 ,  G02B6/02 ,  G02B6/16

CPC classification number: H01S3/06708 ,  C03B37/01807 ,  C23C16/30 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36

Abstract: An optical waveguide for fiber-optic amplifiers is disclosed where the Progression of the fluorescence band of optical waveguides that are doped with erbium and aluminum can be additionally flattened if the core contains fluorine, e.g., in the form of ErF.sub.3 and AIF.sub.3, as an additional doping agent.

Abstract translation: 公开了一种用于光纤放大器的光波导，其中如果芯包含氟，例如以ErF3和AIF3的形式作为附加的，则掺杂有铒和铝的光波导的荧光带的进展可以被额外地变平 掺杂剂。

公开(公告)号：US5473622A

公开(公告)日：1995-12-05

申请号：US366165

申请日：1994-12-29

Applicant: Stephen G. Grubb

Inventor： Stephen G. Grubb

IPC: H01S3/06 ,  G02B6/036 ,  H01S3/067 ,  H01S3/08 ,  H01S3/17 ,  H01S3/23 ,  H01S3/30

CPC classification number: G02B6/03633 ,  H01S3/06708 ,  H01S3/0675 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/12 ,  C03B2203/22 ,  H01S3/06729 ,  H01S3/094007

Abstract: A master oscillator and power amplifier configuration for a high power cladding-pumped laser structure, and a method of making same, is disclosed. The laser structure comprises a single mode core having at least one oscillator defined therein, and a first and second cladding layer for waveguiding and radiation retention. The core is doped with refractive-index modifying dopants, in addition to ionized rare earth elements. The refractive-index modifying dopants facilitate writing one or more spaced pairs of index gratings in the core, each pair defining an oscillator. Oscillator cavity length is determined by the desired mode spacing and is less than one-half of the single mode core length. The index gratings are formed via a ultraviolet light-induced refractive index change in the core, which index change varies periodically along the core. The periodic variation is created by projecting an interference pattern on the core.

Abstract translation: 公开了一种用于高功率包层泵浦激光器结构的主振荡器和功率放大器配置及其制造方法。 激光器结构包括具有限定在其中的至少一个振荡器的单模芯和用于波导和辐射保持的第一和第二覆层。 除了电离的稀土元素之外，该核掺杂有折射率修饰掺杂剂。 折射率修正掺杂剂便于在芯中写入一个或多个间隔的折射光栅对，每对限定振荡器。 振荡器腔长度由所需的模式间隔决定，小于单模芯长度的一半。 折射率光栅通过核心的紫外光诱导折射率变化而形成，该折射率变化沿核心周期性地变化。 通过在芯上投影干涉图案来产生周期性变化。