公开(公告)号：US06490078B2

公开(公告)日：2002-12-03

申请号：US09809301

申请日：2001-03-16

申请人： Tadashi Enomoto ,  Masahiro Takagi ,  Yuichi Ohga ,  Motoki Kakui ,  Shinji Ishikawa ,  Masakazu Shigehara ,  Shinji Endo

发明人： Tadashi Enomoto ,  Masahiro Takagi ,  Yuichi Ohga ,  Motoki Kakui ,  Shinji Ishikawa ,  Masakazu Shigehara ,  Shinji Endo

IPC分类号： G02B634

CPC分类号： H01S3/06708 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06754

摘要： The present invention relates to an OFA having a high signal gain, easily manufactured, having a high mechanical strength, having a small splice loss with respect to other optical fibers, and rarely encountering the occurrence of noise at a signal wavelength. The OFA according to the present invention has a function of amplifying signals propagating therethroug by pumping light supplied thereto, and comprises, at least, a core region, an inner cladding region provided on the periphery of the core region, an outer cladding region provided on the periphery of the inner cladding region, and one or more node coupling gratings. An element for signal amplification is added to at least the core region. The core region has a structure ensuring a core mode with respect to the signals, while the inner cladding region has a structure ensuring a multi-mode with respect to the pumping light. Each of the mode coupling gratings passes core mode signals therethrough, and induces a mode coupling between the inner cladding mode and the core mode with respect to the pumping light.

摘要翻译： 本发明涉及具有高机械强度，易于制造的具有高信号增益，相对于其它光纤具有小的接合损耗，并且很少遇到在信号波长处的噪声的发生的OFA。 根据本发明的OFA具有通过泵送供给到其上的光来传播传播的信号的功能，并且至少包括芯区域，设置在芯区域周围的内包层区域，设置在芯区域 内包层区域的周边，以及一个或多个节点耦合光栅。 用于信号放大的元件至少加到核心区域。 芯区域具有确保相对于信号的芯模式的结构，而内包层区域具有确保相对于泵浦光的多模式的结构。 每个模式耦合光栅通过芯模信号，并且相对于泵浦光在内包层模式和芯模之间引起模耦合。

公开(公告)号：US06538806B2

公开(公告)日：2003-03-25

申请号：US09842054

申请日：2001-04-26

申请人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

发明人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/06708 ,  H01S3/0672 ,  H01S3/1601 ,  H01S3/1608 ,  H01S3/1655

摘要： An optical fiber is for optical amplification used for 1.58 &mgr;m band signal light amplification, at least a core region thereof being doped with Er. At least a part of the core region is made of silica glass co-doped with Ge and Al together with Er. The Er average atomic concentration in the core region is from 1500 wt-ppm to 3000 wt-ppm inclusive, and cutoff wavelength is from 0.8 &mgr;m to 1.1 &mgr;m inclusive.

摘要翻译： 用于光放大的光纤用于1.58Mum带信号光放大，至少其核心区掺杂有Er。 核心区域的至少一部分由与Al一起掺杂Ge和Al的石英玻璃制成。 核心区域中的Er平均原子浓度为1500重量ppm〜3000重量ppm，截止波长为0.8〜1.1μm。

公开(公告)号：US06577440B2

公开(公告)日：2003-06-10

申请号：US09842008

申请日：2001-04-26

申请人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

发明人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/06708 ,  H01S3/0672 ,  H01S3/1601 ,  H01S3/1608 ,  H01S3/1655

摘要： An optical fiber for optical amplification used for 1.58 &mgr;m band signal light amplification, at least a core region thereof being doped with Er has a core region at least a part thereof made of silica glass co-doped with Ge and Al together with Er, and Er average atomic concentration in the core region is from 1000 wt-ppm to 3000 wt-ppm inclusive, and cutoff wavelength is from 1.3 &mgr;m to 1.5 &mgr;m inclusive.

公开(公告)号：US06771415B2

公开(公告)日：2004-08-03

申请号：US10428043

申请日：2003-05-02

申请人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

发明人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/06708 ,  H01S3/0672 ,  H01S3/1601 ,  H01S3/1608 ,  H01S3/1655

摘要： An optical fiber for optical amplification used for 1.58 &mgr;m band signal light amplification, at least a core region thereof being doped with Er has a core region at least a part thereof made of silica glass co-doped with Ge and Al together with Er, and Er average atomic concentration in the core region is from 1000 wt-ppm to 3000 wt-ppm inclusive, and cutoff wavelength is from 1.3 &mgr;m to 1.5 &mgr;m inclusive.

摘要翻译： 一种用于光放大的光纤用于1.58个母带信号光放大，至少其芯区域被掺杂有铒，其核心区域至少有一部分由与Er一起掺杂Ge和Al的石英玻璃制成，以及 核心区域中的Er平均原子浓度为1000重量ppm〜3000重量ppm，截止波长为1.3〜1.5微摩尔。

公开(公告)号：US06243196B1

公开(公告)日：2001-06-05

申请号：US09314973

申请日：1999-05-20

申请人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

发明人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/06708 ,  H01S3/0672 ,  H01S3/1601 ,  H01S3/1608 ,  H01S3/1655

摘要： An optical fiber for optical amplification used for 1.58 &mgr;m band signal light amplification, at least a core region thereof being doped with Er, wherein at least a part of the core region is made of silica glass co-doped with Ge and Al together with Er, and an average Er atomic concentration in the core region is from 950 wt-ppm to 3000 wt-ppm inclusive.

摘要翻译： 一种用于光放大的光纤用于1.58Mum带信号光放大，至少其核心区域掺杂有Er，其中芯区的至少一部分由与Ge和Al一起掺杂的石英玻璃与Er一起制成 ，核心区域中的平均Er原子浓度为950重量ppm〜3000重量ppm。

公开(公告)号：US06687439B1

公开(公告)日：2004-02-03

申请号：US09674071

申请日：2000-10-26

申请人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui ,  Toshimi Suzuki

发明人： Shinji Endo ,  Shinji Ishikawa ,  Motoki Kakui ,  Toshimi Suzuki

IPC分类号： G02B602

CPC分类号： H01S3/06708 ,  C03B37/01211 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/22

摘要： The present invention relates to a light-amplifying optical fiber comprising a structure for realizing a flat gain characteristic or oscillation characteristic in a wider wavelength band, and a method of making the same. The light-amplifying optical fiber according to the present invention comprises a second doped area containing a first doped area including an optical axis center and having a larger outer diameter than the first doped area. The second doped area is doped with at least one of Al2O3, P2O5, Y2O3, and B2O3 as an oxide of an element having a valence different from that of a cation constituting a main material of the light-amplifying optical fiber; whereas the first doped area is doped with at least one of Er, Nd, Tm, Yb, and Pr as a rare-earth element together with the oxide.

摘要翻译： 本发明涉及一种包括用于实现更宽波长带中的平坦增益特性或振荡特性的结构的光放大光纤及其制造方法。根据本发明的光放大光纤包括： 第二掺杂区域包含包含光轴中心并且具有比第一掺杂区域更大的外径的第一掺杂区域。 掺杂有Al 2 O 3，P 2 O 5，Y 2 O 3和B 2 O 3中的至少一种作为与构成光放大光纤的主要材料的阳离子的价态不同的元素的氧化物的第2掺杂区域; 而第一掺杂区域与氧化物一起掺杂有Er，Nd，Tm，Yb和Pr中的至少一种作为稀土元素。

公开(公告)号：US06724527B2

公开(公告)日：2004-04-20

申请号：US09954260

申请日：2001-09-18

申请人： Shinji Endo ,  Motoki Kakui

发明人： Shinji Endo ,  Motoki Kakui

IPC分类号： H04B1012

CPC分类号： H01S3/06758 ,  H01S3/06716 ,  H01S3/06725 ,  H01S3/0677

摘要： Disclosed are an optical amplifier and an optical transmission system using the same in which not only can the dispersion of optical waveguide paths for optical amplification be easily and sufficiently compensated, but also the waveform degradation of signal light can be restrained. An optical amplifier according to one embodiment of the present invention comprises at least two erbium-doped fibers 10 and 20, having erbium doped to optically amplify signal light with the pump light, and having dispersion different from each other in sign, and being connected together in series, and two pump light sources 11 and 12 for supplying pump light to them.

摘要翻译： 公开了一种光放大器和使用该放大器的光传输系统，其中不仅可以容易且充分地补偿用于光放大的光波导路径的色散，而且可以抑制信号光的波形劣化。 根据本发明的一个实施例的光放大器包括至少两个铒掺杂光纤10和20，掺铒掺杂以便利用泵浦光光信号放大光信号，并具有彼此不同的色散，并连接在一起 以及用于向其供应泵浦光的两个泵浦光源11和12。

公开(公告)号：US5081068A

公开(公告)日：1992-01-14

申请号：US546446

申请日：1990-07-03

申请人： Shinji Endo ,  Toshiaki Ohmori ,  Takaaki Fukumoto ,  Keisuke Namba

发明人： Shinji Endo ,  Toshiaki Ohmori ,  Takaaki Fukumoto ,  Keisuke Namba

IPC分类号： B08B7/00 ,  B24C1/00 ,  B24C11/00 ,  H01L21/00 ,  H01L21/302 ,  H01L21/304 ,  H01L21/306 ,  H01L21/3065 ,  H05K3/26

CPC分类号： H01L21/02043 ,  B08B7/0092 ,  B24C1/003 ,  B24C11/00 ,  H01L21/6715 ,  H05K3/26 ,  H05K2203/025 ,  H05K2203/0796 ,  H05K2203/083 ,  H05K2203/1509

摘要： The method of treating a surface of a substrate (12) comprises the steps of physically treating the surface by jetting hydrogen peroxide containing ice particles (28) onto the substrate surface, and chemically treating the substrate surface with hydrogen peroxide solution obtained by melting the hydrogen peroxide containing ice particles (28).

摘要翻译： 处理基材（12）的表面的方法包括通过将含有过氧化氢的冰颗粒（28）喷射到基材表面上来物理处理表面的步骤，以及通过将氢气熔化获得的过氧化氢溶液化学处理基材表面 含有过氧化物的冰粒（28）。

公开(公告)号：US06668048B1

公开(公告)日：2003-12-23

申请号：US09487569

申请日：2000-01-19

申请人： Susumu Suga ,  Shoji Aizawa ,  Shinji Endo ,  Kazuhiro Takizawa ,  Ichiro Inoue

发明人： Susumu Suga ,  Shoji Aizawa ,  Shinji Endo ,  Kazuhiro Takizawa ,  Ichiro Inoue

IPC分类号： H04M342

CPC分类号： H04Q3/62 ,  H04M3/42068 ,  H04M3/42314 ,  H04M3/56 ,  H04M2203/5054

摘要： An unscheduled terminal unit is prevented from being connected to conference communication or a scheduled terminal unit is prevented from being not connected to the conference communication, and security of the conference communication is improved, and also, a conference server for interconnecting many terminal units is connected to a private branch exchange and reservation tables for using the conference server are provided in order to surely charge users for conference communication service. When an incoming call for requesting connection of the conference communication comes to the private branch exchange, the validation is identified by whether the incoming call has been registered in the reservation tables or not, and the connection is rejected for the invalid incoming call.

摘要翻译： 阻止非计划终端单元连接到会议通信，或者阻止调度的终端单元不连接到会议通信，并且提高了会议通信的安全性，并且连接许多终端单元的会议服务器被连接 提供专用分机交换机和用于使用会议服务器的预约表，以确保为用户提供会议通信服务。 当用于请求连接会议通信的呼入呼叫到专用小交换机时，通过接入呼叫是否已经登记在预约表中来识别该确认，并且该连接被拒绝用于该无效呼入。

公开(公告)号：US06452717B1

公开(公告)日：2002-09-17

申请号：US09708609

申请日：2000-11-09

申请人： Shinji Endo

发明人： Shinji Endo

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/102 ,  H01S3/131

摘要： The present invention relates to a fiber optic amplifier comprising a structure enabling favorable signal amplification characteristics to be maintained even in an environment exposed to radiation. The fiber optic amplifier according to the present invention comprises a bleaching system for restoring glass defects generated within an optical fiber for amplification upon exposure to ultraviolet rays. This bleaching system carries out at least one of optical bleaching and thermal bleaching for the optical fiber for amplification. The optical bleaching is effected when bleaching light having a shorter wavelength shorter and a higher power than pumping light is supplied into the optical fiber for amplification, whereas the fiber optic amplifier has a structure which can introduce and eliminate the bleaching light. On the other hand, the thermal bleaching is effected by heating the optical fiber for amplification, whereas the fiber optic amplifier comprises a structure for maintaining the surface temperature of the optical fiber for amplification within a predetermined range.

摘要翻译： 本发明涉及一种光纤放大器，其包括即使在暴露于辐射的环境中也能够保持有利的信号放大特性的结构。 根据本发明的光纤放大器包括一个漂白系统，用于恢复在光纤中产生的玻璃缺陷，用于在暴露于紫外线时进行放大。 该漂白系统进行用于光纤的放大的光学漂白和热漂白中的至少一种。 当将具有较短波长的漂白光和比泵浦光更高的功率的漂白光供应到用于放大的光纤中时，进行光学漂白，而光纤放大器具有能够引入和消除漂白光的结构。 另一方面，通过加热用于放大的光纤来实现热漂白，而光纤放大器包括用于将光纤的表面温度保持在预定范围内的结构。