公开(公告)号：US20030031432A1

公开(公告)日：2003-02-13

申请号：US10159375

申请日：2002-05-30

Inventor： Craig R. Sykora ,  James R. Onstott ,  Mark T. Anderson ,  Craig R. Schardt ,  Lawrence J. Donalds ,  Alessandra O. Chiareli

IPC: G02B006/255

CPC classification number: G02B6/03655 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/36 ,  C03B2203/22 ,  C03C3/06 ,  C03C13/046 ,  C03C23/0095 ,  C03C25/104 ,  C03C25/1065 ,  C03C25/608 ,  G02B6/02285 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/0365 ,  G02B6/03694 ,  G02B6/2551 ,  H01S3/06708 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06754

Abstract: A fusion splice including a first optical fiber having a first MFD and a first MFD expansion rate. The splice further includes a second fiber having a second MFD and a second MFD expansion rate, wherein the second MFD is lower than the first MFD. The second fiber comprises a core, a cladding radially surrounding the core, and a zone of high-concentration of fluorine between the core and the cladding. The rate of MFD expansion of the first fiber is less than the rate of MFD expansion of the second fiber during the fusion splicing operation.

Abstract translation: 一种融合接头，包括具有第一MFD和第一MFD扩展速率的第一光纤。 接头还包括具有第二MFD和第二MFD扩展速率的第二纤维，其中第二MFD低于第一MFD。 第二纤维包括芯，径向包围芯的包层以及芯和包层之间的高浓度氟区。 在融合操作期间，第一纤维的MFD膨胀率小于第二纤维的MFD膨胀速率。

公开(公告)号：US20020118938A1

公开(公告)日：2002-08-29

申请号：US10076603

申请日：2002-02-19

Inventor： Takemi Hasegawa ,  Masashi Onishi

IPC: G02B006/20 ,  G02B006/16 ,  C03B037/027

CPC classification number: G02B6/02328 ,  C03B37/01208 ,  C03B37/0122 ,  C03B37/01231 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/42 ,  C03B2203/14 ,  C03B2203/42 ,  G02B6/02333 ,  G02B6/02347 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/29376 ,  Y02P40/57

Abstract: Provided is an optical fiber having holes extending along the axis whose transmission loss is substantially reduced and the manufacturing method thereof. First, a plurality of through-holes 9 are formed in a preform 5 extending along the preform axis. Subsequently, the preform 5 is heated by heating means 24 in the furnace preferably for 30 minutes or more at a temperature equal to or more than 800null C. while flowing a dry gas in the through-holes 9. As a result, the OH group which exists on the surfaces of the inner walls 5a of the through-holes 9 of the preform 5 is discharged outside the preform. Subsequently, the preform 5 is drawn into an optical fiber.

Abstract translation: 提供一种光纤，其具有沿着传输损耗大大降低的轴线延伸的孔及其制造方法。 首先，在沿着预成型体轴线延伸的预成型体5中形成有多个通孔9。 接着，在通气孔9中使干燥气体流通的同时，在等于或大于800℃的温度下，通过加热装置24在炉中加热预制件5，优选30分钟以上。结果，OH 存在于预成型体5的通孔9的内壁5a的表面上的组被排出到预成型体的外部。 随后，预成型件5被拉入光纤。

公开(公告)号：US06404966B1

公开(公告)日：2002-06-11

申请号：US09306498

申请日：1999-05-06

Applicant: Satoki Kawanishi ,  Katsunari Okamoto

Inventor： Satoki Kawanishi ,  Katsunari Okamoto

IPC: G02B602

CPC classification number: G02B6/02328 ,  C03B37/01205 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2203/10 ,  C03B2203/16 ,  C03B2203/30 ,  C03B2203/42 ,  G02B6/02333 ,  G02B6/02347 ,  G02B6/105

Abstract: An optical fiber including a core having an area of about several times an optical wavelength and composed of a hollow hole, and a cladding having a diffraction grating which is arranged at least in a peripheral area adjacent to the core and has a grating period equal to ½ the optical wavelength.

Abstract translation: 一种光纤，包括具有大约几倍于光波长并由中空孔组成的芯的芯，以及具有衍射光栅的包层，该衍射光栅至少布置在与芯相邻的周边区域中，并且具有等于 1/2的光波长。

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：US6079225A

公开(公告)日：2000-06-27

申请号：US099894

申请日：1998-06-18

Applicant: Klaus Ruppert ,  Anton Steinkohl

Inventor： Klaus Ruppert ,  Anton Steinkohl

IPC: C03B8/04 ,  C03B19/14 ,  C03B20/00

CPC classification number: C03B19/1423 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/42 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/14 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/34 ,  C03B2207/42 ,  F23D2900/00006

Abstract: In a known method, a quartz glass preform is produced by supplying a glass-forming base material in liquid form to an injection nozzle of a multi-nozzle flame deposition burner, vaporizing or gasifying the liquid glass-forming base material in the deposition burner, mixing the vaporized or gasified glass-forming base material with a gas containing oxygen under creation of SiO.sub.2 particles in a chemical reaction, deposition of the SiO.sub.2 particles on a substrate under creation of a porous preform and sintering of the preform. In this method, expensive devices such as pumps and ultrasonic vaporizers are needed for the vaporization of the liquid glass-forming base material; in addition, these devices are subject to mechanical wear and chemical attack and furthermore, they require extensive maintenance and due to their size result in a great height of construction. In order to avoid these disadvantages, a method is proposed according to the invention wherein a gas for the creation of a mist is fed to the deposition burner for the vaporization or gasification of the glass-forming base material, resulting in the creation of a low pressure in the area of the injection nozzle orifice. In an apparatus suitable for implementing the method, a vaporizing device comprises a vaporizing nozzle for the supply of a vaporizing gas, said nozzle being located adjacent to the injection nozzle and having an opening which, as seen in the direction of travel of the vaporizing gas, extends in a plane behind the injection nozzle opening.

Abstract translation: 在已知的方法中，通过将液体形式的玻璃形成基材料供给到多喷嘴火焰沉积燃烧器的喷嘴，在沉积燃烧器中蒸发或气化液态玻璃形成基材来制造石英玻璃预制件， 在蒸发或气化的玻璃形成基材与化学反应中产生SiO 2颗粒的气体中混合气化的玻璃形成基材，在形成多孔预型体的同时将SiO 2颗粒沉积在基材上并烧结预型体。 在这种方法中，液体玻璃形成基材的汽化需要昂贵的装置如泵和超声波蒸发器; 此外，这些装置受到机械磨损和化学侵蚀，此外，它们需要广泛的维护，并且由于其尺寸导致很高的结构高度。 为了避免这些缺点，提出了根据本发明的方法，其中用于产生雾的气体被供给到用于玻璃形成基材的蒸发或气化的沉积燃烧器，导致产生低的 喷嘴孔口的压力。 在适于实施该方法的装置中，蒸发装置包括用于供应汽化气体的蒸发喷嘴，所述喷嘴位于喷嘴附近，并且具有开口，该开口沿蒸发气体的行进方向 在喷嘴开口后面的平面内延伸。

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：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：US5447744A

公开(公告)日：1995-09-05

申请号：US151815

申请日：1993-11-15

Applicant: Francis Bryselbout

Inventor： Francis Bryselbout

IPC: B01J4/02 ,  B01J4/00 ,  C01B33/04 ,  C01B35/16 ,  C03B37/014 ,  C23C16/52 ,  F17C13/02 ,  G01N9/00 ,  B05D1/00

CPC classification number: C03B37/01413 ,  B01J4/008 ,  C23C16/52 ,  F17C13/023 ,  G01N9/002 ,  C03B2201/10 ,  C03B2201/28 ,  F17C2223/0123 ,  F17C2250/0421 ,  F17C2250/0426 ,  F17C2250/043 ,  F17C2250/0439 ,  F17C2250/0447 ,  F17C2250/0495 ,  F17C2250/0636 ,  Y02E60/321 ,  Y10T137/0335 ,  Y10T137/2504 ,  Y10T137/2506

Abstract: A process for supplying a gas to a reactor comprising the steps of:(i) continuously measuring density of the gas, the gas including at least one component which is susceptible to formation of an undesired side product as shown by a variation in density of the gas; and(ii) modifying feed conditions of the gas if formation of the undesired side product is shown by a variation in the density of the gas.The process can be employed to continuously monitor the content of diborane (B.sub.2 H.sub.6) in a mixture with silane (SiH.sub.4) in a process for producing a borophosphosilicate glass.An apparatus for supplying a gas to a reactor is also disclosed.