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1.发明授权Glass preform for dispersion shifted single mode optical fiber and method for the production of the same 失效用于色散偏移单模光纤的玻璃预制件及其制造方法
公开(公告)号：US4822399A
公开(公告)日：1989-04-18
申请号：US60176
申请日：1987-06-10
申请人： Hiroo Kanamori , Hiroshi Yokota , Gotaro Tanaka , Yoichi Ishiguro , Masahiro Takagi , Hiroshi Suganuma , Masayuki Shigematsu
发明人： Hiroo Kanamori , Hiroshi Yokota , Gotaro Tanaka , Yoichi Ishiguro , Masahiro Takagi , Hiroshi Suganuma , Masayuki Shigematsu
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/12 , C03C13/04 , C03B37/018
CPC分类号： G02B6/02276 , C03B37/01211 , C03B37/014 , C03B37/01446 , C03B37/01466 , C03C13/045 , G02B6/03633 , C03B2201/12 , C03B2203/22 , C03B2203/36 , Y10S65/16 , Y10S65/90
摘要： A glass preform for use in the fabrication of a dispersion shifted single mode optical fiber is produced by a method for comprising steps of inserting a core member consisting of an inner core part made of a germanium-added quartz glass which optionally contains fluorine and an outer core part made of a quartz glass having a refractive index smaller than that of the inner core part in a glass tube made of a fluorine-added quartz glass having a refractive index smaller than that of the outer core part, heating the core member and the glass tube to collapse the glass tube and fuse them together to produce a glass perform. The glass preform comprises a core member consisting of an inner core part made of GeO.sub.2 -SiO.sub.2 glass or GeO.sub.2 -F-SiO.sub.2 glass and an outer core part made of F-SiO.sub.2 glass and a cladding made of F-SiO.sub.2 glass and provides a dispersion shifted single mode optical fiber having reduced attenuation of light transmission in the 1.5 .mu.m wavelength band.
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公开(公告)号：US5202947A
公开(公告)日：1993-04-13
申请号：US798913
申请日：1991-11-29
IPC分类号： G02B6/00 , C03C25/42 , G02B6/02 , G02B6/255 , G02B6/28 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/10
CPC分类号： G02B6/02 , G02B6/2552 , G02B6/2835 , H01S3/06708 , H01S3/06729 , H01S3/06783 , H01S3/094003
摘要： There is disclosed an optical component capable of amolifying function by itself and a method of producing thereof. The component includes a light amplifying portion therein and the light amplifying portion includes active elements which serves the light amplification. In the producing method, the amplifying portion is, for example, formed by utilizing sol-gel method to introduce the active elements.
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公开(公告)号：USRE35222E
公开(公告)日：1996-04-30
申请号：US275738
申请日：1994-07-19
IPC分类号： G02B6/00 , C03C25/42 , G02B6/02 , G02B6/255 , G02B6/28 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/10 , G02B6/26
CPC分类号： G02B6/02 , G02B6/2552 , G02B6/2835 , H01S3/06708 , H01S3/06729 , H01S3/06783 , H01S3/094003
摘要： There is disclosed an optical component capable of amolifying function by itself and a method of producing thereof. The component includes a light amplifying portion therein and the light amplifying portion includes active elements which serves the light amplification. In the producing method, the amplifying portion is, for example, formed by utilizing sol-gel method to introduce the active elements.
摘要翻译： 公开了能够自身分散功能的光学部件及其制造方法。 该组件包括其中的光放大部分，并且光放大部分包括用于光放大的有源元件。 在制造方法中，放大部分例如通过使用溶胶 - 凝胶法形成以引入有源元件。
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公开(公告)号：US06952309B1
公开(公告)日：2005-10-04
申请号：US09667576
申请日：2000-09-22
申请人： Tetsufumi Tsuzaki , Masayuki Nishimura , Masayuki Shigematsu , Hitoshi Hatayama , Eisuke Sasaoka
发明人： Tetsufumi Tsuzaki , Masayuki Nishimura , Masayuki Shigematsu , Hitoshi Hatayama , Eisuke Sasaoka
CPC分类号： H01S3/06758 , H01S3/06754 , H01S3/10007 , H01S3/10023 , H01S3/1301 , H01S2301/04 , H04B10/2941 , H04B10/2942 , H04B10/296
摘要： A optical filter has a loss spectrum whose gradient dL/dλ of a loss L (dB) with respect to the wavelength λ (nm) is variable in the wavelength band of multiplexed signal light. A control circuit detects each power of signal light components demultiplexed by an optical coupler and controls the power of optical pumping light to be supplied to an optical amplification section from an optical pumping light sources such that the power of output signal light has a predetermined target value. The control circuit also controls the gradient dL/dλ of the optical filter on the basis of powers of the signal light components.
摘要翻译： 滤光器具有损耗谱，其相对于波长λ（nm）的损耗L（dB）的梯度dL /dlλ在复用信号光的波长带中是可变的。 控制电路检测由光耦合器解复用的信号光分量的每个功率，并且控制从光泵浦光源提供给光放大部分的光泵浦光的功率，使得输出信号光的功率具有预定的目标值 。 控制电路还基于信号光分量的功率来控制滤光器的梯度dL / dl。
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5.发明授权
公开(公告)号：US6055081A
公开(公告)日：2000-04-25
申请号：US782756
申请日：1997-01-10
IPC分类号： H04B10/18
摘要： In a chromatic dispersion compensator, an optical signal directing unit such as an optical circulator or a directional coupler having a first, second, third and fourth ports. The optical signal directing unit directs an optical signal inputted from one of the ports to another port of the ports. A reflection-type compensator including a dispersion compensating fiber, a reflecting portion and changing unit for changing a polarization direction of a reciprocating signal light, in which the dispersion compensating fiber is connected to the reflecting portion via the changing unit. An input transmission path which is connected to the first port; and an output transmission path which is connected to the fourth port so that the signal light is outputted from the fourth port. The reflection-type compensating unit is connected to one of the second and third ports, and the chirped grating is connected to the other port.
摘要翻译： 在色散补偿器中，诸如光循环器的光信号引导单元或具有第一，第二，第三和第四端口的定向耦合器。 光信号引导单元将从一个端口输入的光信号引导到端口的另一端口。 一种反射型补偿器，包括色散补偿光纤，反射部分和用于改变往复信号光的偏振方向的改变单元，其中色散补偿光纤通过改变单元连接到反射部分。 连接到第一端口的输入传输路径; 以及输出传输路径，其连接到第四端口，使得信号光从第四端口输出。 反射型补偿单元连接到第二和第三端口中的一个，并且啁啾光栅连接到另一端口。
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6.发明授权
公开(公告)号：US5701188A
公开(公告)日：1997-12-23
申请号：US535902
申请日：1995-09-28
IPC分类号： G02B6/34 , H04B10/2519 , H04B10/2525 , H04B10/00
CPC分类号： G02B6/29374 , G02B6/29317 , H04B10/2519 , H04B10/2525
摘要： A chromatic dispersion compensator includes an optical circulator or a directional coupler having a first, second and third ports; an input transmission path connected to the first port; an output transmission path connected to the third port; a chirped grating connected to the second port; and a dispersion compensating fiber connected to at least one of the first, second and third ports. The dispersion compensating fiber and the chirped grating have chromatic dispersion characteristics which are opposite to the chromatic dispersion characteristics of the input and output transmission paths. In the wavelength compensator, the optical signal is incident into the first port from the input transmission path, and is made to go out to the chirped grating from the second port. Further, the optical signal is incident from the chirped grating to return to the second port, and is made to go to the output transmission path from the third port.
摘要翻译： 色散补偿器包括具有第一，第二和第三端口的光循环器或定向耦合器; 连接到第一端口的输入传输路径; 连接到第三端口的输出传输路径; 连接到第二端口的啁啾光栅; 以及连接到第一，第二和第三端口中的至少一个的色散补偿光纤。 色散补偿光纤和啁啾光栅具有与输入和输出传输路径的色散特性相反的色散特性。 在波长补偿器中，光信号从输入传输路径入射到第一端口中，并从第二端口出来到啁啾光栅。 此外，光信号从啁啾光栅入射返回到第二端口，并使其从第三端口进入输出传输路径。
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7.发明授权Fluorescence glass, optical wave guide for optical amplifier and optical amplifier module 失效荧光玻璃，光学放大器和光放大器模块的光波导公开(公告)号：US07170674B2
公开(公告)日：2007-01-30
申请号：US10725928
申请日：2003-12-03
CPC分类号： C03C3/06 , C03C3/083 , C03C3/089 , C03C3/091 , C03C3/097 , C03C3/16 , C03C3/17 , C03C3/253 , H01S3/06716
摘要： The present invention provides fluorescent glass containing at least 50 mol % of at least one kind of oxide selected from the group consisting of SiO2, GeO2, and P2O5 as a glass constituent of a region containing a Bi ion as a dopant.
摘要翻译： 本发明提供含有至少50mol％的选自SiO 2，GeO 2，和P 2 O 3中的至少一种氧化物的荧光玻璃， 作为含有作为掺杂剂的Bi离子的区域的玻璃成分的2 O 5 O 3。
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公开(公告)号：US5742427A
公开(公告)日：1998-04-21
申请号：US752958
申请日：1996-11-20
申请人： Motoki Kakui , Masayuki Shigematsu
发明人： Motoki Kakui , Masayuki Shigematsu
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/16 , H01S3/23 , H04B10/2525 , H04B10/29 , H04B10/294 , H04B10/516 , H04B10/61 , G02B6/28
CPC分类号： H01S3/06758 , H01S2301/04 , H01S3/094096 , H01S3/1608 , H01S3/1691
摘要： This invention relates to an optical fiber amplifier for amplifying and outputting input signal light. The optical fiber amplifier includes first to third amplification optical fibers. The first to third optical fibers are arranged such that the signal light passes through the first to third optical fibers in the order named. A first value as the (emission cross-section)/(absorption cross-section) of the first optical fiber and a third value as the (emission cross-section)/(absorption cross-section) of the third optical fiber are set to be larger than a second value as the (emission cross-section)/(absorption cross-section) of the second optical fiber. With this arrangement, low noise can be achieved in the first optical fiber, and a large output can be achieved in the third optical fiber. In addition, the gain characteristics associated with wavelength in this optical fiber amplifier as the overall transmission line including the first, second, and third amplification optical fibers can be sufficiently flattened.
摘要翻译： 本发明涉及一种用于放大和输出输入信号光的光纤放大器。 光纤放大器包括第一至第三放大光纤。 第一至第三光纤布置成使得信号光以所述顺序通过第一至第三光纤。 作为第一光纤的（发光截面）/（吸收截面）和作为第三光纤的（发光截面）/（吸收截面）的第三值的第一值被设定为 大于作为第二光纤的（发射截面）/（吸收截面）的第二值。 利用这种布置，可以在第一光纤中实现低噪声，并且可以在第三光纤中实现大的输出。 此外，作为包括第一，第二和第三放大光纤的整体传输线的该光纤放大器中与波长相关联的增益特性可以被充分地平坦化。
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公开(公告)号：US5532870A
公开(公告)日：1996-07-02
申请号：US346256
申请日：1994-11-23
IPC分类号： G02B6/00 , G02B6/02 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/16 , H01S3/17 , H04J14/02 , H01S3/00 , H01S3/30
CPC分类号： H04B10/2912 , H01S3/06754 , H04B10/291 , H04B10/2935 , H04B10/294 , H04J14/0221 , H01S2301/04 , H01S3/1608 , H04B2210/003
摘要： An optical fiber amplifier comprises a composite optical fiber for receiving signal light and excitation light, amplifying the signal light and emitting the amplified signal light, comprising at least two kinds of optical fibers serially coupled each having a glass composition selected from at least two kinds of rare-earth-doped glass compositions, and excitation means for generating excitation light and supplying it to the composite optical fiber. Then, an optical fiber amplifier which reduces the wavelength dependency of gain in various wavelength ranges in wavelength division multiplexing transmission or in optical analog transmission, and which maintains an energy efficiency for amplification, an optical fiber amplifier which makes a wavelength at a gain peak to a predetermined one in accordance with intensities of various input lights, and an optical amplifier repeater comprising this optical fiber amplifier are provided.
摘要翻译： 光纤放大器包括用于接收信号光和激发光的复合光纤，放大信号光并发射放大的信号光，包括至少两种串联耦合的光纤，每个光纤具有选自以下的至少两种 稀土掺杂的玻璃组合物，以及用于产生激发光并将其提供给复合光纤的激励装置。 然后，在波分多路复用传输或光模拟传输中降低各种波长范围的增益的波长依赖性并且保持放大的能量效率的光纤放大器使波长为增益峰值的光纤放大器 提供根据各种输入光的强度的预定值，以及包括该光纤放大器的光放大器中继器。
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公开(公告)号：US5214728A
公开(公告)日：1993-05-25
申请号：US888474
申请日：1992-05-22
IPC分类号： H04B10/08 , H04B10/17 , H04B10/213
CPC分类号： H04B10/27 , H04B10/038 , H04B10/071 , H04B10/272 , H04B10/291 , H04B10/2912
摘要： A bi-directional optical communication system. A first optical fiber includes a plurality of pieces, each piece having a first and second end. An optical amplifier for amplifying optical signals transmitted in a first direction is coupled to first and second pieces of the first optical fiber. A second optical fiber is coupled to the first and second pieces, bypasses the optical amplifier and transmits optical signals in a second direction opposite to the first direction. A first optical signal generator apparatus coupled to the first piece of the first optical fiber provides optical signals propagating in the first direction to a optical receiver apparatus coupled to the second piece of the first optical fiber. A second optical signal generator in the optical receiver apparatus provides optical signals propagating in the second direction to the first optical signal generator apparatus. A second optical receiver and a monitor, both in the first optical signal generator apparatus, receive the optical signals propagating in the second direction and monitor various operating conditions of the optical communication system.
摘要翻译： 双向光通信系统。 第一光纤包括多个片，每片具有第一端和第二端。 用于放大沿第一方向传输的光信号的光放大器耦合到第一和第二片第一光纤。 第二光纤耦合到第一和第二片，绕过光放大器并沿与第一方向相反的第二方向传输光信号。 耦合到第一光纤的第一片的第一光信号发生器装置提供沿第一方向传播的光信号到耦合到第一光纤的第二片的光接收装置。 光接收装置中的第二光信号发生器提供沿第二方向传播的光信号到第一光信号发生装置。 在第一光信号发生器装置中的第二光接收器和监视器接收沿第二方向传播的光信号并监视光通信系统的各种操作状态。
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