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21. 发明授权

US4899360A Semiconductor laser device having monolithically formed active and passive cavities on the same substrate 失效
标题翻译：半导体激光器件在同一衬底上具有单片形式的有源和无源腔
公开(公告)号：US4899360A
公开(公告)日：1990-02-06
申请号：US276763
申请日：1988-11-08
申请人： Toshihiro Fujita , Jun Ohya , Kenichi Matsuda , Hiroyuki Serizawa
发明人： Toshihiro Fujita , Jun Ohya , Kenichi Matsuda , Hiroyuki Serizawa
IPC分类号： H01S5/026 , H01S5/06 , H01S5/062 , H01S5/0625 , H01S5/065 , H01S5/10 , H01S5/125 , H01S5/14
CPC分类号： H01S5/1021 , H01S5/026 , H01S5/0265 , H01S5/06 , H01S5/06213 , H01S5/06255 , H01S5/06258 , H01S5/065 , H01S5/0655 , H01S5/1025 , H01S5/125 , H01S5/14 , H01S5/142
摘要： A semiconductor laser device of a new monolithic structure has a long transparent optical waveguide used as a passive cavity directly coupled with an active cavity possessing a gain in the direction of the optical axis of the active cavity on a compound semiconductor substrate. The device is intended to satisfy all of four characteristics, which are;(1) stable single longitudinal mode oscillation;(2) narrow spectral linewidth;(3) suppression of wavelength chirping due to current modulation; and(4) low noiseand to be applied as a light source for optical fiber communication, optical information processing or the like.
摘要翻译：新的单片结构的半导体激光器件具有用作无源腔的长透明光波导，其与在化合物半导体衬底上的有源腔的光轴方向上具有增益的有源腔直接耦合。该装置旨在满足四个特征，即（1）稳定的单纵模振荡; （2）窄光谱线宽; （3）由于电流调制抑制波长啁啾; 和（4）低噪声，并被用作光纤通信，光学信息处理等的光源。

22. 发明授权

US06822997B2 Semiconductor laser module and optical transmission system 失效
标题翻译：半导体激光模块和光传输系统
公开(公告)号：US06822997B2
公开(公告)日：2004-11-23
申请号：US10185174
申请日：2002-06-28
申请人： Kiyoshi Fujihara , Jun Ohya
发明人： Kiyoshi Fujihara , Jun Ohya
IPC分类号： H01S300
CPC分类号： G02B6/4208 , H01S5/0064 , H01S5/0222 , H01S5/02248 , H01S5/02284 , H01S5/02438 , Y10S372/703
摘要： The invention provides a semiconductor laser module and an optical transmission system, with which noise caused by light reflected back from a transmission path can be suppressed. The semiconductor laser module, includes a package having a window, a semiconductor laser chip outputting light, a lens that is optically designed such that it couples the light that is output by the semiconductor laser chip into an optical transmission path, an optical isolator that is disposed between the lens and the window, a temperature control mechanism for keeping temperature of these components constant, and a tubular ferrule that is holds and covers the optical transmission path. The semiconductor laser chip, the lens, the optical isolator, and the temperature control mechanism are arranged inside the package. A polarizer is arranged at an end face of the ferrule on the side of the package, such that the polarizer matches a polarization plane of the light that is emitted through the window of the package.
摘要翻译：本发明提供一种半导体激光器模块和光传输系统，可以抑制从传输路径反射的光引起的噪声。半导体激光器模块包括具有窗口的封装，输出光的半导体激光器芯片，光学设计的透镜，使得将由半导体激光器芯片输出的光耦合到光传输路径中，光隔离器是设置在透镜和窗口之间，用于保持这些部件的温度恒定的温度控制机构和保持并覆盖光传输路径的管状套圈。半导体激光芯片，透镜，光隔离器和温度控制机构布置在封装内。偏振器布置在套圈一侧的端面处，使得偏振器与通过封装的窗口发射的光的偏振平面匹配。

23. 发明授权

US06556327B1 Signal converter, optical transmitter and optical fiber transmission system 有权
标题翻译：信号转换器，光发射机和光纤传输系统
公开(公告)号：US06556327B1
公开(公告)日：2003-04-29
申请号：US09186142
申请日：1998-11-05
申请人： Jun Ohya , Masaru Fuse , Seiichiro Kawashima
发明人： Jun Ohya , Masaru Fuse , Seiichiro Kawashima
IPC分类号： H04B1004
CPC分类号： H04B10/5053 , H04B10/505 , H04B10/5051
摘要： The signal converter of the present invention receives a multichannel video signal and converts the video signal into a microwave signal, the phase of which has been modulated with the video signal. The signal converter includes: a laser light source; a modulating section for modulating the phase of output light of the laser light source with the multichannel video signal and modulating the intensity of the output light with the microwave signal; and a light receiver for receiving the output light modulated by the modulating section and for outputting the microwave signal, the phase of which has been modulated with the multichannel video signal.
摘要翻译：本发明的信号转换器接收多声道视频信号并将该视频信号转换为微波信号，其相位已经用视频信号进行了调制。信号转换器包括：激光源; 调制部，用于利用多声道视频信号调制激光光源的输出光的相位，并用微波信号调制输出光的强度; 以及光接收器，用于接收由调制部分调制的输出光，并输出微波信号，其相位已经用多声道视频信号进行了调制。

24. 发明授权

US5623362A Erbium-doped fiber amplifier and an optical fiber communication system 失效
标题翻译：掺铒光纤放大器和光纤通信系统
公开(公告)号：US5623362A
公开(公告)日：1997-04-22
申请号：US693859
申请日：1996-08-05
申请人： Masahiro Mitsuda , Jun Ohya
发明人： Masahiro Mitsuda , Jun Ohya
IPC分类号： G02B27/28 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H04B10/2507 , H04B10/29 , H04B10/293 , G02B6/28 , H01S3/30
CPC分类号： H01S3/06758 , H01S3/094096
摘要： The erbium-doped fiber amplifier comprises: a first erbium-doped optical fiber pumped by 0.98 .mu.m band light and amplifying the signal light; a first pump light source for producing the 0.98 .mu.m band light; a first optical coupler for coupling the 0.98 .mu.m band light with the signal light at an input portion of the first optical fiber; a second erbium-doped optical fiber pumped by 1.48 .mu.m band light and amplifying the signal light; a second pump light source for producing the 1.48 .mu.m band light; and a second optical coupler for coupling the 1.48 .mu.m band light with the signal light at an output portion of the second optical fiber; wherein a pump light isolator is installed between the first optical fiber and the second optical fiber for blocking the passing of the 1.48 .mu.m band light from the second optical fiber to the first optical fiber while allowing the passing of the signal light.
摘要翻译：铒掺杂光纤放大器包括：第一掺铒光纤，由0.98μm波段光泵浦并放大信号光; 用于产生0.98微米光带的第一泵浦光源; 第一光耦合器，用于将0.98μm带光与在第一光纤的输入部分处的信号光耦合; 第一个掺铒光纤被1.48微米的带光束泵浦并放大信号光; 用于产生1.48微米光带的第二泵浦光源; 以及第二光耦合器，用于在第二光纤的输出部分处耦合1.48μm带光与信号光; 其特征在于，在所述第一光纤与所述第二光纤之间安装泵浦光隔离器，用于阻止从所述第二光纤到所述第一光纤的所述1.48μm带的光通过，同时允许所述信号光的通过。

25. 发明授权

US5598491A Optical fiber amplifier and optical fiber transmission apparatus 失效
标题翻译：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。

26. 发明授权

US5530583A Optical signal amplification apparatus and an optical fiber transmission system using the same 失效
标题翻译：光信号放大装置和使用其的光纤传输系统
公开(公告)号：US5530583A
公开(公告)日：1996-06-25
申请号：US342437
申请日：1994-11-18
申请人： Tomoaki Uno , Jun Ohya , Katsuyuki Fujito
发明人： Tomoaki Uno , Jun Ohya , Katsuyuki Fujito
IPC分类号： H01S3/067 , H01S3/23 , H01S3/00
CPC分类号： H01S3/06754 , H01S3/094011
摘要： The optical signal amplification apparatus of this invention includes a plurality of optical fiber amplifiers connected in series, each optical fiber amplifier including: an optical fiber doped with rare earth ions; and a pumping light source for emitting pumping light for exciting the optical fiber, wherein the power of signal light input into each optical fiber amplifier is set so that the value of a distortion component of the signal light output from the optical fiber amplifier is equal to the value of a distortion component of the signal light input into the optical fiber amplifier and that the distortion component of the signal light output from the optical fiber amplifier increases when the power of the signal light input into the optical fiber amplifier increases. An optical fiber transmission system including the optical signal amplification device is also provided.
摘要翻译：本发明的光信号放大装置包括串联连接的多个光纤放大器，每个光纤放大器包括：掺杂有稀土离子的光纤; 以及用于发射用于激励光纤的泵浦光的泵浦光源，其中输入到每个光纤放大器的信号光的功率被设置为使得从光纤放大器输出的信号光的失真分量的值等于当输入到光纤放大器的信号光的功率增加时，输入到光纤放大器的信号光的失真分量的值和从光纤放大器输出的信号光的失真分量增加。还提供了包括光信号放大装置的光纤传输系统。

27. 发明授权

US5436751A Analog optical transmission system and optical fiber amplifier 失效
标题翻译：模拟光传输系统和光纤放大器
公开(公告)号：US5436751A
公开(公告)日：1995-07-25
申请号：US982166
申请日：1992-11-24
申请人： Jun Ohya , Toshihiro Fujita
发明人： Jun Ohya , Toshihiro Fujita
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/0941 , H01S3/10 , H04B10/2507 , H04B10/54 , G02F2/00 , H04B15/00
CPC分类号： H04B10/504
摘要： In an optical transmission system for transmitting a video signal by transmitting a laser light modulated with a video signal, through an optical fiber; and for receiving and photoelectrically converting the received laser light, a pilot signal is added to the video signal by a summing amplifier. A frequency of the pilot signal is smaller than a band width of the laser light, so that peak level of interference noise developed by multi-reflection at both ends of the optical fiber is decreased considerably. Moreover, in an optical transmission system for transmitting and receiving a video signal by modulating a laser light with the video signal through an optical fiber; and for receiving and photoelectrically converting the received laser light, a polarizing control element is provided in the optical fiber by coiling the optical fiber, so that a signal laser light transmitted without multi-reflection has different retardation from a signal laser light with multi-reflection, so that interference noise is reduced. Similarly, an optical fiber amplifier also employs the polarizing control element to reduce the adverse effect caused by the interference noise.
摘要翻译：在用于通过发送通过视频信号调制的激光的视频信号的光传输系统中，通过光纤; 并且为了接收和光电转换所接收的激光，通过加法放大器将导频信号加到视频信号中。导频信号的频率小于激光的带宽，使得在光纤两端由多反射产生的干扰噪声的峰值电平显着降低。此外，在用于通过光纤通过用视频信号调制激光来发送和接收视频信号的光传输系统中，并且为了接收和光电转换接收到的激光，通过卷绕光纤在光纤中提供了偏振控制元件，使得不具有多次反射的透射信号激光与具有多反射的信号激光具有不同的延迟，从而降低干扰噪声。类似地，光纤放大器还采用偏振控制元件来减少由干扰噪声引起的不良影响。

28. 发明授权

US5321708A Optical fiber amplifier doped with dysprosium ion for the 1.3 .mu.m wavelength band 失效
标题翻译：光纤放大器掺杂镝离子为1.3μm波段
公开(公告)号：US5321708A
公开(公告)日：1994-06-14
申请号：US39772
申请日：1993-03-26
申请人： Genji Tohmon , Hisanao Sato , Jun Ohya , Toshihiro Fujita
发明人： Genji Tohmon , Hisanao Sato , Jun Ohya , Toshihiro Fujita
IPC分类号： C03C4/00 , G02B6/00 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/08 , H01S3/094 , H01S3/0941 , H01S3/16 , H01S3/17 , H01S3/14
CPC分类号： H01S3/06716 , H01S3/17 , H01S2302/00 , H01S3/06754 , H01S3/06791 , H01S3/094065 , H01S3/0941 , H01S3/1606 , H01S3/173 , H01S3/176
摘要： A core of a fluorozirconate optical fiber is doped with rare earth ions, namely trivalent Dy ions. The Dy ion makes an absorption transition with excitation light generated by an 800 nm semiconductor laser module. Then the Dy ion undergoes transitions, namely a nonradiative transition involving phonon emission, a transition to a metastable excited level, and a radiative transition wherein radiation corresponding to the 1.28 .mu.m to 1.35 .mu.m range occurs, thereafter returning to its ground state level. The Dy ion having an electrovalence of three can be pumped with a high-output 800 nm semiconductor laser module and is not subject to saturation at a lower energy level of population inversion. Using an optical fiber of the invention, a higher gain is obtained in the region of 1.3 .mu.m telecommunications window.
摘要翻译：氟锆酸盐光纤的核掺杂有稀土离子，即三价Dy离子。 Dy离子通过800nm半导体激光器模块产生的激发光进行吸收转变。然后，Dy离子经历转变，即涉及声子发射的非辐射跃迁，到亚稳激发电平的转变，以及辐射跃迁，其中发生对应于1.28μm至1.35μm范围的辐射，然后返回到其基态。具有三次电流的Dy离子可以用高输出800nm半导体激光器模块泵送，并且在较低的总体反转能量水平下不会饱和。使用本发明的光纤，在电信窗口的1.3μm区域获得较高的增益。

29. 发明授权

US4794608A Semiconductor laser device 失效
标题翻译：半导体激光器件
公开(公告)号：US4794608A
公开(公告)日：1988-12-27
申请号：US708848
申请日：1985-03-05
申请人： Toshihiro Fujita , Jun Ohya , Kenichi Matsuda , Hiroyuki Serizawa
发明人： Toshihiro Fujita , Jun Ohya , Kenichi Matsuda , Hiroyuki Serizawa
IPC分类号： H01S5/00 , H01S5/026 , H01S5/06 , H01S5/062 , H01S5/0625 , H01S5/065 , H01S5/10 , H01S5/125 , H01S5/14 , H01S3/19
CPC分类号： H01S5/0014 , H01S5/1021 , H01S5/026 , H01S5/0265 , H01S5/06 , H01S5/06213 , H01S5/06255 , H01S5/06258 , H01S5/065 , H01S5/0655 , H01S5/1025 , H01S5/125 , H01S5/14 , H01S5/142
摘要： A semiconductor laser device of a new monolithic structure has a long transparent optical waveguide used as a passive cavity directly coupled with an active cavity possessing a gain in the direction of the optical axis of the active cavity on a compound semiconductor substrate. The device is intended to satisfy all four characteristics, which are;(1) stable single longitudinal mode oscillation;(2) narrow spectral linewidth;(3) suppression of wavelength chirping due to current modulation; and(4) low noiseand to be applied as a light source for optical fiber communication, optical information processing or the like.
摘要翻译：新的单片结构的半导体激光器件具有用作无源腔的长透明光波导，其与在化合物半导体衬底上的有源腔的光轴方向上具有增益的有源腔直接耦合。该装置旨在满足所有四个特征，即（1）稳定的单纵模振荡; （2）窄光谱线宽; （3）由于电流调制抑制波长啁啾; 和（4）低噪声，并被用作光纤通信，光学信息处理等的光源。

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