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    Laser element doped with rare earth ions, optical amplifier element doped with rare earth ions and rare-earth-ion-doped short-wavelength laser light source apparatus
    1.
    发明授权
    Laser element doped with rare earth ions, optical amplifier element doped with rare earth ions and rare-earth-ion-doped short-wavelength laser light source apparatus 失效
    掺杂稀土离子的激光元件，掺杂稀土离子的光放大元件和稀土离子掺杂短波长激光光源装置

    公开(公告)号：US5426656A

    公开(公告)日：1995-06-20

    申请号：US184932

    申请日：1994-01-24

    申请人： Genji Tohmon ,  Jun Ohya ,  Hisanao Sato ,  Tomoaki Uno

    发明人： Genji Tohmon ,  Jun Ohya ,  Hisanao Sato ,  Tomoaki Uno

    IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/14

    CPC分类号： H01S3/16 ,  H01S2302/00 ,  H01S3/067 ,  H01S3/094092 ,  H01S3/1611

    摘要： The optical fiber is doped at the core thereof with Tm ions and Nd ions. When light at a wavelength in a 800-nm band for exciting the Nd ions, is incident upon the optical fiber through an incident portion thereof, the Nd ions emit light at a wavelength in the vicinity of 1,012 .mu.m. Through three excitations by absorption of light emitted from the Nd ions and/or energy transfer from the Nd ions, the Tm ions experience three excitation transitions and reach a third high energy level through first and second high energy levels. Thereafter, the Tm ions experience a radiative transition from the third high energy level, thereby to emit blue light at a wavelength of 480 nm.

    摘要翻译： 光纤在其核心掺杂有Tm离子和Nd离子。 当用于激发Nd离子的800nm波长的波长的光通过其入射部分入射到光纤上时，Nd离子发射波长在1012μm附近的光。 通过吸收从Nd离子发射的光和/或来自Nd离子的能量转移的三次激发，Tm离子经历三次激发跃迁，并通过第一和第二高能级达到第三高能级。 此后，Tm离子经历从第三高能量水平的辐射跃迁，由此发射波长为480nm的蓝色光。

    Short-wavelength laser element doped with rare earth ions, optical amplifier doped with rare earth ions, and wavelength converter doped with rare earth ions
    2.
    发明授权
    Short-wavelength laser element doped with rare earth ions, optical amplifier doped with rare earth ions, and wavelength converter doped with rare earth ions 失效
    掺杂有稀土离子的短波长激光元件，掺杂有稀土离子的光放大器和掺杂稀土离子的波长转换器

    公开(公告)号：US5659558A

    公开(公告)日：1997-08-19

    申请号：US610884

    申请日：1996-03-05

    申请人： Genji Tohmon ,  Jun Ohya ,  Tomoaki Uno

    发明人： Genji Tohmon ,  Jun Ohya ,  Tomoaki Uno

    IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/30

    CPC分类号： H01S3/067 ,  H01S3/094096 ,  H01S3/1616 ,  H01S3/1645

    摘要： A first pumping beam at a wavelength of 1210 nm emitted from a first pumping source is focused by a first lens system on an optical fiber. A second pumping beam at a wavelength of 650 nm emitted from a second pumping source passes through a coupler and a second lens system and arrives at the optical fiber to be incident thereon. Tm ions with which a core portion of the optical fiber is doped sequentially experience a ground-state level absorption transition upon absorption of the first pumping beam, an excited-state level absorption transition to an upper laser level upon absorption of the second pumping beam, and a radiative transition from the upper laser level to a ground-state level, thereby emitting light at a wavelength of 460 to 500 nm. The light at a wavelength of 460 to 500 nm emitted from the Tm ions is resonated by a resonator consisting of an incident mirror and an emitting mirror and outputted as a laser beam.

    摘要翻译： 从第一泵浦源发射的波长为1210nm的第一泵浦光束由第一透镜系统聚焦在光纤上。 从第二泵浦源发射的波长为650nm的第二泵浦光束穿过耦合器和第二透镜系统并到达光纤入射到其上。 掺杂光纤的纤芯部分的Tm离子顺序地经受吸收第一泵浦光束时的基态状态电平吸收转变，吸收第二泵浦光束时的激发态电平吸收跃迁到上激光水平， 以及从上激光电平到基态电平的辐射转变，从而发射波长为460〜500nm的光。 从Tm离子发射的波长为460〜500nm的光由入射镜和发射镜构成的谐振器谐振，作为激光束输出。

    Rare earth ion doped optical element
    3.
    发明授权
    Rare earth ion doped optical element 失效
    稀土离子掺杂光学元件

    公开(公告)号：US5341237A

    公开(公告)日：1994-08-23

    申请号：US830311

    申请日：1992-01-31

    申请人： Genji Tohmon ,  Hisanao Sato ,  Toshihiro Fujita ,  Jun Ohya

    发明人： Genji Tohmon ,  Hisanao Sato ,  Toshihiro Fujita ,  Jun Ohya

    IPC分类号： H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/083 ,  H01S3/16 ,  H01S3/17 ,  H01S3/14

    CPC分类号： H01S3/17 ,  H01S3/06716 ,  H01S3/1608 ,  H01S3/1611 ,  H01S3/1613 ,  H01S3/1616 ,  H01S3/1698

    摘要： The effective rate of deactivation from the terminal state to the ground state of a rare earth ion doped optical material in a four-level amplifying or lasing scheme may be increased greatly by doping the optical material with two rare earth ions, an activator and a deactivator. Energy transfer occurs between the terminal state in the activator ion and the deactivator ion. The transition from the deactivator to the ground state occurs via phonon emission. By increasing the deactivation rate, the efficiency of the laser and the amplifier is increased.

    摘要翻译： 通过掺杂具有两种稀土离子的光学材料，激活剂和失活剂，可以大大增加在四级放大或激光方案中从稀土离子掺杂光学材料的终端状态到基态的失活的有效速率 。 能量转移发生在活化剂离子的末端状态和钝化剂离子之间。 从失活剂到基态的过渡通过声子发射发生。 通过增加去激活率，增加了激光器和放大器的效率。

    Optical device and method for producing the same
    5.
    发明授权
    Optical device and method for producing the same 失效
    光学装置及其制造方法

    公开(公告)号：US06406196B1

    公开(公告)日：2002-06-18

    申请号：US08809976

    申请日：1997-07-24

    申请人： Tomoaki Uno ,  Jun Ohya ,  Genji Tohmon ,  Masahiro Mitsuda

    发明人： Tomoaki Uno ,  Jun Ohya ,  Genji Tohmon ,  Masahiro Mitsuda

    IPC分类号： G02B636

    CPC分类号： G02B6/12007 ,  G02B6/421 ,  G02B6/4214 ,  G02B6/4246 ,  G02B2006/12109 ,  H01L2224/16225 ,  H01L2224/32225 ,  H01L2224/73204 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2224/0401

    摘要： The optical device of the present invention includes a substrate, at least one first groove formed on the substrate, an optical fiber placed in the first groove, and at least one second groove diagonally formed across the optical fiber. Furthermore, the optical device includes an optical member inserted in the second groove, having a surface which reflects or diffracts at least a part of light propagating through the optical fiber. A photodetector is placed at a position where light which is reflected or diffracted by the optical member is received. As a result, an miniaturized optical device having a low loss and high reliability can be provided at low cost.

    摘要翻译： 本发明的光学装置包括基板，形成在基板上的至少一个第一凹槽，放置在第一凹槽中的光纤以及横跨光纤对角地形成的至少一个第二凹槽。 此外，光学装置包括插入第二凹槽中的光学构件，具有反射或衍射穿过光纤的光的至少一部分的表面。 光电检测器被放置在被光学部件反射或衍射的光的位置。 结果，可以以低成本提供具有低损耗和高可靠性的小型化光学器件。

    Analog optical transmission system
    6.
    发明授权
    Analog optical transmission system 失效
    模拟光传输系统

    公开(公告)号：US5453867A

    公开(公告)日：1995-09-26

    申请号：US107997

    申请日：1993-08-18

    申请人： Jun Ohya ,  Toshihiro Fujita ,  Hisanao Sato

    发明人： Jun Ohya ,  Toshihiro Fujita ,  Hisanao Sato

    IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S5/06 ,  H04B10/2507 ,  H04B10/54 ,  H04B10/00

    CPC分类号： H04B10/2507 ,  H04B10/504

    摘要： An analog transmission system for transmitting a multi-channel analog signal including plural carrier signals having different frequencies, comprises: a laser unit responsive to the multi-channel analog signal for emitting laser light signal intensity-modulated by the multi-channel analog signal, the laser unit having an oscillation wavelength W1; an optical fiber amplifier for amplifying the laser light signal with a peak gain at a wavelength W2; an optical fiber for transmitting the amplified laser light; and an optical receiver for receiving the transmitted laser light and for converting the received laser light into an electric signal as an output. In this system, a total distortion characteristic of the laser unit is compensated by distortions developed in the optical fiber amplifier.

    摘要翻译： 一种用于发送包括具有不同频率的多个载波信号的多通道模拟信号的模拟传输系统，包括：激光单元，响应于多通道模拟信号，用于发射由多通道模拟信号强度调制的激光信号， 具有振荡波长W1的激光单元; 用于在波长W2处以峰值增益放大激光信号的光纤放大器; 用于传输放大的激光的光纤; 以及用于接收发射的激光并将接收的激光转换为电信号作为输出的光接收器。 在该系统中，通过在光纤放大器中产生的失真来补偿激光单元的总失真特性。

    Intermediate isolator type fiber amplifier and fiber transmission system
    7.
    发明授权
    Intermediate isolator type fiber amplifier and fiber transmission system 失效
    中间隔离器型光纤放大器和光纤传输系统

    公开(公告)号：US5914808A

    公开(公告)日：1999-06-22

    申请号：US701987

    申请日：1996-08-23

    申请人： Masahiro Mitsuda ,  Jun Ohya ,  Tomoaki Uno

    发明人： Masahiro Mitsuda ,  Jun Ohya ,  Tomoaki Uno

    IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/00

    CPC分类号： H01S3/06758

    摘要： The fiber amplifier of this invention includes: a first rare earth element doped fiber; a second rare earth element doped fiber; and a pump light source for generating pump light for exciting the first rare earth element doped fiber and the second rare earth element doped fiber, the fiber amplifier receiving analog signal light and amplifying the analog signal light, wherein the fiber amplifier further includes a directional transmitter disposed between the first rare earth element doped fiber and the second rare earth element doped fiber, and a transmittance of the directional transmitter for at least light having the same wavelength as the signal light propagating from the first rare earth element doped fiber to the second rare earth element doped fiber is larger than a transmittance of the directional transmitter for the light propagating from the second rare earth element doped fiber to the first rare earth element doped fiber.

    摘要翻译： 本发明的光纤放大器包括：第一稀土元素掺杂光纤; 第二稀土元素掺杂光纤; 以及泵浦光源，用于产生用于激发第一稀土元素掺杂光纤和第二稀土元素掺杂光纤的泵浦光，所述光纤放大器接收模拟信号光并放大模拟信号光，其中光纤放大器还包括定向发射器 设置在第一稀土元素掺杂光纤和第二稀土元素掺杂光纤之间，并且定向发射器的透射率至少为与从第一稀土元素掺杂光纤传播到第二稀土元素掺杂光纤的信号光具有相同波长的光 对于从第二稀土元素掺杂光纤向第一稀土元素掺杂光纤传播的光，定向发送器的透射率大于地球元素掺杂光纤。

    Optical fiber amplifier and optical fiber transmission apparatus
    10.
    发明授权
    Optical fiber amplifier and optical fiber transmission apparatus 失效
    光纤放大器和光纤传输装置

    公开(公告)号：US5598491A

    公开(公告)日：1997-01-28

    申请号：US517907

    申请日：1995-08-22

    申请人： Jun Ohya ,  Tomoaki Uno ,  Masahiro Mitsuda

    发明人： Jun Ohya ,  Tomoaki Uno ,  Masahiro Mitsuda

    IPC分类号： H01S3/13 ,  G02B6/28 ,  H01S3/30

    CPC分类号： H01S3/1302 ,  H01S2301/04

    摘要： The optical fiber amplifier includes a rare earth doped optical fiber and a pumping light source for outputting pumping light for pumping the rare earth doped optical fiber, the optical fiber amplifier optically amplifying signal light received at an input end and outputting the amplified signal light from an output end, wherein the optical fiber amplifier further includes an optical fiber resonator for laser-oscillating a portion of light of spontaneous emission generated in the rare earth doped optical fiber, which has a wavelength shorter than the wavelength of the signal light, thereby to keep a gain substantially fixed independent of a variation in the wavelength of the signal light.

    摘要翻译： 光纤放大器包括稀土掺杂光纤和用于输出用于泵浦稀土掺杂光纤的泵浦光的泵浦光源，光纤放大器光放大在输入端接收的信号光，并输出来自 输出端，其中所述光纤放大器还包括光纤谐振器，用于激光振荡稀土掺杂光纤中产生的自发发光的一部分，其具有比信号光的波长短的波长，从而保持 与信号光的波长变化无关的增益。