公开(公告)号：US20020073739A1

公开(公告)日：2002-06-20

申请号：US09764938

申请日：2001-01-17

Inventor： Ying-Hua Zhang ,  Brian M. Laliberte ,  Ray F. Robinson

IPC: C03B037/018

CPC classification number: C03C25/105 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/027 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2207/81 ,  C03B2207/90

Abstract: A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low numerical aperture, low core attenuation, and high pumping power absorption. The high concentrations of rare earth dopant material are accomplished through either the nullhybrid vapor processingnull (HVP) method or a nullhybrid liquid processingnull (HLP) method, each capable of being practiced in combination or independently of one another. The HVP method involves the vaporization of a rare earth halogen by the exposure thereof to a sufficiently elevated temperature, independently, or contemporaneously with the transport of the resultant rare earth halogen laden vapor, into a glass forming oxidation reaction zone on a flowing stream of essentially an unreactive inert gas, such as helium. According to the HLP method, a first amount of rare earth dopant is provided according to the HVP method and/or other vapor source of rare earth dopant which is mixed with glass forming vapors to form a deposited soot layer on the internal surface of a glass tube. The soot-deposited tube is then impregnated with a dopant solution which may be formulated with a second amount of rare earth dopant. The tube is then thermally collapsed resulting in an optical preform with a an enhanced amount of incorporated first and second amounts of rare earth dopant.

Abstract translation: 公开了一种用于制造具有相当高浓度的稀土掺杂剂材料的光纤预制件的方法和装置，因此可以将其拉制和加工成具有低数值孔径，低内核衰减和高的光纤 抽吸功率吸收。 高浓度的稀土掺杂剂材料通过“混合蒸气处理”（HVP）方法或“混合液体处理”（HLP）方法实现，每种方法可以彼此组合或独立地实施。 HVP方法包括通过将稀土卤素的蒸发独立地或同时地将所得的含稀土卤素的蒸汽输送到基本上流动的流动的玻璃形成氧化反应区中，将稀土卤素的蒸发蒸发到足够高的温度 非反应性惰性气体，例如氦气。 根据HLP方法，根据HVP法和/或稀土掺杂剂的其它蒸汽源与玻璃形成蒸气混合，提供第一量的稀土掺杂剂，以在玻璃的内表面上形成沉积的烟灰层 管。 然后将烟灰沉积管用掺杂剂溶液浸渍，掺杂剂溶液可以用第二量的稀土掺杂剂配制。 然后将管热收缩，导致具有增加量的掺入的第一和第二量的稀土掺杂剂的光学预型件。

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：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：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。

公开(公告)号：US5284500A

公开(公告)日：1994-02-08

申请号：US63046

申请日：1993-05-19

Applicant: Kouji Okamura ,  Tadao Arima

Inventor： Kouji Okamura ,  Tadao Arima

IPC: C03B37/016 ,  C03B37/018 ,  C03B37/023

CPC classification number: C03B37/016 ,  C03B37/01815 ,  C03B37/01838 ,  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的掺杂浓度分布。

公开(公告)号：US5250096A

公开(公告)日：1993-10-05

申请号：US864989

申请日：1992-04-07

Applicant: Allan J. Bruce ,  Eliezer M. Rabinovich

Inventor： Allan J. Bruce ,  Eliezer M. Rabinovich

IPC: C03B8/02 ,  C03B19/12 ,  C03B20/00 ,  C03B37/016 ,  C03C1/00 ,  C03B37/01

CPC classification number: C03C1/008 ,  C03B37/016 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/36 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2201/50 ,  Y10S65/901

Abstract: Relatively large bodies of low-alkali silicate and other glass can be prepared conveniently by a particulate sol-gel process. The glass comprises at least 85 mole % SiO.sub.2, 1-12 mole % oxide of one or more of Li, Na, K, Rb, Cs, Ti and Zr, 0-6 mole % of oxide of Al, and optionally at most 2.5 mole % of oxide of elements other than Si, Li, Na, K, Rb, Cs, Ti, Zr and Al. The process comprises forming particles from a first sol that comprises Si and one or more of Li, Na, K, Rb, Cs, Ti and Zr, and optionally additionally comprises Al. The process further comprises forming a second sol by dispersing the particles in an aqueous liquid, gelling the second sol, and heat treating the resulting gel body such that the glass results.