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    Optical amplifier
    2.
    发明授权
    Optical amplifier 有权
    光放大器

    公开(公告)号：US07538937B2

    公开(公告)日：2009-05-26

    申请号：US11364633

    申请日：2006-02-28

    Applicant: Shinichi Aozasa ,  Hiroji Masuda ,  Makoto Shimizu

    Inventor： Shinichi Aozasa ,  Hiroji Masuda ,  Makoto Shimizu

    IPC: H04B10/17 ,  H04B10/12

    CPC classification number: H04B10/296 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094023 ,  H01S3/10007 ,  H01S3/10023 ,  H01S3/1301 ,  H01S3/1302 ,  H01S3/131 ,  H01S3/1616 ,  H01S3/2383

    Abstract: An optical amplifier includes a rare-earth doped optical fiber or rare-earth doped optical waveguide serving as an amplification medium where rare-earth ions have been doped in its core and/or clad, an excitation mechanism for exciting the amplification medium, an optical resonator that causes laser oscillation at one or more wavelength of spontaneous emission light produced and amplified in the amplification medium, a monitoring mechanism that monitors a power of at least one light selected from a power of at least one light with at least one prescribed wavelength band selected from the light inputted to the amplification medium and a power of at least one light selected from a power of at least one light with at least one prescribed wavelength band selected from the light outputted from the amplification medium, and a control unit that controls the excitation mechanism based on a value from monitoring mechanism.

    Abstract translation: 光放大器包括稀土掺杂光纤或稀土掺杂光波导，其用作在其核和/或包层中掺杂稀土离子的放大介质，用于激发放大介质的激发机制，光学 谐振器，其在放大介质中产生和放大的自发发射光的一个或多个波长处引起激光振荡;监测机构，其监测从具有至少一个规定波长带的至少一个光的功率中选出的至少一个光的功率 从输入到放大介质的光中选择的光和从从放大介质输出的光中选择的至少一个规定波长带的至少一种光的功率中选择的至少一种光的功率;以及控制单元， 激励机制基于监测机制的价值。

    Optical amplifier
    6.
    发明授权
    Optical amplifier 有权
    光放大器

    公开(公告)号：US07042634B2

    公开(公告)日：2006-05-09

    申请号：US10389486

    申请日：2003-03-14

    Applicant: Shinichi Aozasa ,  Hiroji Masuda ,  Makoto Shimizu

    Inventor： Shinichi Aozasa ,  Hiroji Masuda ,  Makoto Shimizu

    IPC: H04B10/12

    CPC classification number: H04B10/296 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094023 ,  H01S3/10007 ,  H01S3/10023 ,  H01S3/1301 ,  H01S3/1302 ,  H01S3/131 ,  H01S3/1616 ,  H01S3/2383

    Abstract: An optical amplifier capable of holding the gain profile of the optical amplifier constant includcs a rare-earth doped optical waveguide serving as an amplification medium, a pump light source for exciting the amplification medium, one or more control light source, a monitor, and a control unit. A control method is also provided for using the amplifier for holding the gain profile of the optical amplifier constant by, for example, controlling the control light source so that the calculated gain is matched with a prescribed value or an externally decided value.

    Abstract translation: 能够保持光放大器的增益分布恒定的光放大器包括用作放大介质的稀土掺杂光波导，用于激发放大介质的泵浦光源，一个或多个控制光源，监视器和 控制单元 还提供一种控制方法，用于通过例如控制控制光源使得所计算的增益与规定值或外部确定的值相匹配来使用放大器来保持光放大器的增益分布。

    White light source
    7.
    发明授权
    White light source 失效
    白光源

    公开(公告)号：US06900885B2

    公开(公告)日：2005-05-31

    申请号：US10093100

    申请日：2002-03-08

    Applicant: Hiroji Masuda ,  Hirotaka Ono ,  Makoto Shimizu

    Inventor： Hiroji Masuda ,  Hirotaka Ono ,  Makoto Shimizu

    IPC: H01S3/094 ,  H01S3/30 ,  G02B6/26 ,  H04B10/12

    CPC classification number: H01S3/302 ,  H01S3/094003

    Abstract: The present invention relates to a white light source. This white light source comprises a plurality of amplified spontaneous emission light generating sections each comprising at least an active fiber. At least two of the amplified spontaneous emission light generating sections are connected together in series. The plurality of amplified spontaneous emission light generating sections generate amplified spontaneous emission lights having at least partially overlapping wavelength ranges. Furthermore, a white light source of the present invention includes amplified spontaneous emission light generating sections each comprising at least an active fiber. At least one of the amplified spontaneous emission light generating sections comprises a mirror. If the white light source includes a plurality of amplified spontaneous emission light generating sections, at least two of the plurality of amplified spontaneous emission light generating sections are connected together in series to generate amplified spontaneous emission lights having at least partially overlapping wavelength ranges.

    Abstract translation: 本发明涉及白光源。 该白色光源包括多个放大的自发发射光产生部分，每个包括至少一个有源光纤。 放大的自发发射光发生部分中的至少两个串联连接在一起。 多个放大自发发射光产生部分产生具有至少部分重叠波长范围的放大自发发射光。 此外，本发明的白光源包括至少包含有源光纤的放大的自发发光光产生部。 放大的自发发射光产生部分中的至少一个包括反射镜。 如果白光源包括多个放大的自发发光光产生部，则将多个放大自发发光部中的至少两个串联连接起来，生成具有至少部分重叠的波长范围的放大自发发光。

    Optical fiber amplifier and optical communication system using the same
    8.
    发明授权
    Optical fiber amplifier and optical communication system using the same 失效
    光纤放大器和光通信系统使用相同

    公开(公告)号：US06771414B2

    公开(公告)日：2004-08-03

    申请号：US10061772

    申请日：2002-02-01

    Applicant: Hiroji Masuda ,  Atsushi Mori ,  Makoto Shimizu

    Inventor： Hiroji Masuda ,  Atsushi Mori ,  Makoto Shimizu

    IPC: H01S300

    CPC classification number: H01S3/06754 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1608 ,  H01S3/176 ,  H01S3/177 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2935

    Abstract: This invention relates to the following four structures for attaining a flat gain spectrum over a wide wavelength region. The first structure relates to a Raman amplifier where a tellurite fiber is pumped with two wavelengths having a predetermined difference. The second structure relates to a Raman amplifier or an optical communication system employing a tellurite fiber and a silica fiber. The third structure relates to an optical fiber amplifier employing an Erbium-doped tellurite fiber of which Erbium concentration is low. The fourth structure relates to an optical fiber amplifier employing a rare-earth doped fiber such as the Erbium-doped fiber and a tellurite fiber.

    Abstract translation: 本发明涉及在宽波长区域上实现平坦增益光谱的以下四种结构。 第一结构涉及拉曼放大器，其中以具有预定差异的两个波长泵浦碲化物纤维。 第二结构涉及拉曼放大器或采用碲酸纤维和二氧化硅纤维的光通信系统。 第三结构涉及使用铒浓度低的掺铒碲酸纤维的光纤放大器。 第四结构涉及使用诸如铒掺杂光纤和碲化物光纤的稀土掺杂光纤的光纤放大器。

    Inline repeater and optical fiber communication system
    9.
    发明授权
    Inline repeater and optical fiber communication system 有权
    内联中继器和光纤通信系统

    公开(公告)号：US07920793B2

    公开(公告)日：2011-04-05

    申请号：US10581327

    申请日：2005-06-17

    Applicant: Hiroji Masuda ,  Kenji Sato ,  Yutaka Miyamoto

    Inventor： Hiroji Masuda ,  Kenji Sato ,  Yutaka Miyamoto

    IPC: H04J14/02

    CPC classification number: H01S3/302 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094011 ,  H01S3/0941 ,  H01S3/1608 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/294

    Abstract: An inline repeater that uses a forward-pumped DRA that can use a pumping light source such as an FBG pumping light source and a fiber laser, which are the most commonly used, and an optical fiber communication system are realized. The optical fiber communication system comprises silica fiber as a gain medium for Raman amplification to amplify a signal light; a pumping light source that emits a pumping light that co-propagates through the silica fiber in the same direction as the signal light; and a multiplexer disposed between the silica fiber and the pumping light source that multiplexes the signal light and the pumping light, with the multiplexer being provided with a means to multiplex the signal light input thereto having a wavelength longer than the zero-dispersion wavelength of the silica fiber and the pumping light emitted from the pumping light source, and the pumping light source being equipped with a means to emit pumping light, with the longest wavelength of the pumping light being shorter than the shortest wavelength of the signal light by a frequency difference on the low-frequency side of 13.7 to 30 THz.

    Abstract translation: 实现了使用可以使用最常用的FBG泵浦光源和光纤激光器等泵浦光源的前向泵浦DRA和光纤通信系统的在线中继器。 光纤通信系统包括石英光纤作为用于拉曼放大的增益介质，用于放大信号光; 泵浦光源，其发射与所述信号光沿相同方向共同传播通过所述石英光纤的泵浦光; 以及多路复用器，其布置在二极管光纤和泵浦光源之间，多路复用信号光和泵浦光，多路复用器设置有多路复用输入到其上的信号光，该波长比该波长的零色散波长长 二氧化硅纤维和从泵浦光源发射的泵浦光，并且泵浦光源装备有发射泵浦光的装置，其中泵浦光的最长波长比信号光的最短波长短于频率差 在13.7到30 THz的低频侧。

    Optical amplifier
    10.
    发明授权
    Optical amplifier 有权

    公开(公告)号：US06583924B2

    公开(公告)日：2003-06-24

    申请号：US10187732

    申请日：2002-06-27

    Applicant: Hiroji Masuda ,  Junichi Kani ,  Noboru Takachio

    Inventor： Hiroji Masuda ,  Junichi Kani ,  Noboru Takachio

    IPC: H04B1012

    CPC classification number: H04B10/294 ,  H04B2210/258

    Abstract: In the optical amplifier an optical divider based on long wavelength (or short wavelength) transmission type dielectric multi-layer filter divides input signal light according to wavelengths, and amplifying sections disposed in parallel and having different respective wavelength amplification regions respectively amplify light signals emitted from the optical divider, and an optical combiner based on long wavelength (or short wavelength) transmission type dielectric multi-layer filter combines light signals output from the respective amplifying sections. In another configuration of the optical amplifier, input signal light is divided using an optical divider based on a dielectric multi-layer filter of a long wavelength (or short wavelength) transmission type, and output signals from the divider are filtered using an optical filter connected in series to a short wavelength (or long wavelength) amplifier generating a loss in the long wavelength (or short wavelength) region of the light signals. Interference noise caused by residual reflection components in the dielectric multi-layer filter is thus suppressed, thereby increasing the bandwidth of useable wavelengths in the signal light.

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