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1. 发明授权

US4913506A Optical modulation device 失效
标题翻译：光调制装置
公开(公告)号：US4913506A
公开(公告)日：1990-04-03
申请号：US311218
申请日：1989-02-16
申请人： Masatoshi Suzuki , Shigeyuki Akiba , Hideaki Tanaka , Katsuyuki Utaka
发明人： Masatoshi Suzuki , Shigeyuki Akiba , Hideaki Tanaka , Katsuyuki Utaka
IPC分类号： G02F1/015 , G02F1/017 , G02F1/025 , G02B6/10
CPC分类号： B82Y20/00 , G02F1/01708 , G02F1/025 , G02F2001/0157 , G02F2202/101 , G02F2202/102
摘要： An optical modulation device is disclosed in which a difference between the photon energy of incident light and the band-gap energy of the modulation waveguide layer is set to a value greater than 50 meV to thereby suppress the degradation of the modulation voltage and the modulation band width which is caused by an increase in the intensity of incident light and in that the optical modulation device is formed in a predetermined length to thereby decrease the modulation voltage. The energy gap of the optical waveguide layer of the optical modulation device is varied continuously or discontinuously in the direction of its thickness to provide a constant absorption coefficient thickwise of the optical waveguide layer so that the electric field intensity distribution in the optical waveguide layer is compensated for, by which overlap of the light distribution and the absorption coefficient is increased so as to decrease the modulation voltage and broaden the modulation band by the reduction of the length of the device. The composition, thickness and stripe width of the optical waveguide layer are changed so that its absorption coefficient increases from the light receiving end face of the optical waveguide layer toward its light emitting end face, thereby making the number of carriers absorbed per unit length substantially constant in the direction of travel of light.
摘要翻译：公开了一种光调制装置，其中将入射光的光子能量与调制波导层的带隙能量之间的差设定为大于50meV的值，从而抑制调制电压和调制带的劣化由入射光强度的增加引起的宽度，并且光调制装置形成为预定长度，从而降低调制电压。光调制装置的光波导层的能隙在其厚度方向上连续或不连续地变化，以提供光波导层厚度的恒定吸收系数，使得光波导层中的电场强度分布得到补偿由此，增加了光分布和吸收系数的重叠，从而降低了调制电压，并且通过减小器件的长度来扩大调制频带。改变光波导层的组成，厚度和条纹宽度，使得其吸收系数从光波导层的光接收端面向其发光端面增加，从而使每单位长度吸收的载流子基本恒定在光的行进方向。

2. 发明授权

US4946243A Optical modulation element 失效
标题翻译：光调制元件
公开(公告)号：US4946243A
公开(公告)日：1990-08-07
申请号：US387511
申请日：1989-07-28
申请人： Masatoshi Suzuki , Shigeyuki Akiba , Hideaki Tanaka , Katsuyuki Utaka
发明人： Masatoshi Suzuki , Shigeyuki Akiba , Hideaki Tanaka , Katsuyuki Utaka
IPC分类号： G02B6/12 , G02F1/015 , G02F1/025 , H01L31/14 , H03C1/34
CPC分类号： G02F1/025 , G02F2001/0157
摘要： An optical modulation element is disclosed which has, on a substrate directly or through a lower clad layer, an optical waveguide layer of a low impurity concentration, an upper clad layer of a refractive index smaller than that of the optical waveguide layer, and electrodes, and in which light of a constant intensity incident on a light incident end face of the optical waveguide layer is intensity-modulated by changing the absorption coefficient of the optical waveguide layer by means of an electric field applied thereto across the electrodes so that the thus modulated light is emitted from a light emitting end face of the optical waveguide layer. In accordance with the present invention, a plurality of low impurity concentration regions and a plurality of high impurity concentration regions are disposed alternately with each other in contact with at least one of the lower and upper clad layers in the direction of travel of light in such a manner that the distribution density of the plurality of high impurity concentration regions increases in the direction of travel of light.

3. 发明授权

US5019519A Method for the manufacture of optical semiconductor device 失效
标题翻译：光半导体器件的制造方法
公开(公告)号：US5019519A
公开(公告)日：1991-05-28
申请号：US316865
申请日：1989-02-28
申请人： Hideaki Tanaka , Shigeyuki Akiba , Masatoshi Suzuki , Katsuyuki Utaka
发明人： Hideaki Tanaka , Shigeyuki Akiba , Masatoshi Suzuki , Katsuyuki Utaka
IPC分类号： H01L21/265 , G02B6/134 , H01L21/306 , H01L21/324 , H01S5/00 , H01S5/026 , H01S5/042 , H01S5/20
CPC分类号： H01S5/0265 , G02B6/1347 , H01L21/30612 , H01L21/3245 , H01S5/20 , H01S5/2059 , H01S5/2063 , Y10S148/084
摘要： An optical semiconductor device manufacturing method is disclosed which involves an ion implantation step of implanting ions into a compound semiconductor wafer through an ion implantation mask and an annealing step of activating atoms in the compound semiconductor wafer through an annealing mask film. The ion implantation step and the annealing step are performed in succession after laminating mono- or multi-layered compound semiconductor layers as the ion implantation mask and the annealing mask film on the compound semiconductor wafer.
摘要翻译：公开了一种光学半导体器件制造方法，其包括通过离子注入掩模将离子注入化合物半导体晶片的离子注入步骤和通过退火掩模膜激活化合物半导体晶片中的原子的退火步骤。在将单层或多层化合物半导体层作为离子注入掩模和化合物半导体晶片上的退火掩模膜层叠之后，依次进行离子注入步骤和退火步骤。

4. 发明授权

US5786918A Optical communication system and optical transmitting device 失效
标题翻译：光通信系统和光传输设备
公开(公告)号：US5786918A
公开(公告)日：1998-07-28
申请号：US575174
申请日：1995-12-19
申请人： Masatoshi Suzuki , Hidenori Taga , Noboru Edagawa , Hideaki Tanaka , Shu Yamamoto , Shigeyuki Akiba
发明人： Masatoshi Suzuki , Hidenori Taga , Noboru Edagawa , Hideaki Tanaka , Shu Yamamoto , Shigeyuki Akiba
IPC分类号： G02F1/35 , H04B10/07 , H04B10/2507 , H04B10/2543 , H04B10/294 , H04B10/516 , H04B10/61 , H04J14/08 , H04B10/00
CPC分类号： H04B10/25077 , H04J14/08
摘要： An optical communication system of a construction wherein the average wavelength dispersion value of the transmission optical fiber used, the optical output intensity of each optical amplifier repeater inserted in the transmission optical fiber and the widths of return-to-zero optical pulses transmitted over the transmission line are determined so as to compensate for the pulse compression effect by the nonlinear optical effect produced on the optical pulses by the pulse spreading effect by the wavelength dispersion effect. An optical multiplexer in the optical transmitting device time-division multiplexes the return-to-zero optical pulses, and the optical multiplexed signal is provided as an alternating-amplitude optical signal with the amplitudes of the return-to-zero optical pulses alternated.
摘要翻译：一种结构的光通信系统，其中使用的传输光纤的平均波长色散值，插入在传输光纤中的每个光放大器中继器的光输出强度以及通过传输传输的归零光脉冲的宽度线被确定为通过由脉冲扩散效应通过波长色散效应在光脉冲上产生的非线性光学效应来补偿脉冲压缩效应。光发射装置中的光复用器对归零光脉冲进行时分复用，并且光复用信号被提供为交替振幅的光信号，并且返回到零的光脉冲的幅度交替。

5. 发明授权

US4991921A Pn junction optical modulating device having a buffer layer with small energy gap 失效
标题翻译：具有具有小能隙的缓冲层的Pn结光调制装置
公开(公告)号：US4991921A
公开(公告)日：1991-02-12
申请号：US442521
申请日：1989-11-27
申请人： Masatoshi Suzuki , Hideaki Tanaka , Shigeyuki Akiba , Yuichi Matsushima
发明人： Masatoshi Suzuki , Hideaki Tanaka , Shigeyuki Akiba , Yuichi Matsushima
IPC分类号： G02F1/015 , G02F1/025
CPC分类号： G02F1/025 , G02F2001/0157
摘要： An optical modulating device is disclosed which has, on a substrate directly or via a lower cladding layer, an optical waveguide layer, an upper cladding layer of a refractive index smaller than that of the optical waveguide layer and a pair of electrodes for applying an electric field across the substrate and the upper cladding layer and in which the absorption coefficient for incident light of a fixed intensity incident to the optical waveguide layer is varied by the electric field applied across the pair of electrodes to perform the modulation of the light and the modulated light is emitted from a light emitting end face of the optical waveguide layer. In accordance with the present invention, a pn junction is formed in the upper cladding layer and at least one buffer layer of an energy gap smaller than that of the upper cladding layer but larger than that of the optical waveguide layer is interposed between the upper cladding layer and the optical waveguide layer.
摘要翻译：公开了一种光学调制装置，其在衬底上直接或经由下包层，光波导层，折射率小于光波导层的折射率的上包层和用于施加电的一对电极并且其中入射到光波导层的固定强度的入射光的吸收系数由施加在该对电极上的电场而变化，以执行光的调制和被调制的光从光波导层的发光端面发射。根据本发明，在上部包层中形成pn结，并且至少一个能量间隙的缓冲层比上部包覆层的能隙小，但是比光波导层大的缓冲层插入在上部包层层和光波导层。

6. 发明授权

US4811352A Semiconductor integrated light emitting device 失效
标题翻译：半导体集成发光器件
公开(公告)号：US4811352A
公开(公告)日：1989-03-07
申请号：US147229
申请日：1988-01-22
申请人： Masatoshi Suzuki , Shigeyuki Akiba , Hideaki Tanaka , Yukitoshi Kushiro
发明人： Masatoshi Suzuki , Shigeyuki Akiba , Hideaki Tanaka , Yukitoshi Kushiro
IPC分类号： H01L27/15 , H01S5/00 , H01S5/026 , H01S5/12 , H01S5/125 , H01S3/19 , H01L33/00
CPC分类号： H01S5/125 , H01S5/0265 , H01S5/12
摘要： A semiconductor integrated light emitting device is disclosed which comprises a light emitting waveguide including a light emitting layer, and an external waveguide directly coupled to the light emitting waveguide. In accordance with the present invention, the light emitting waveguide and the external waveguide are mutually laminated in the vicinity of a region where they are directly coupled together.The intensity of the optical output from the light emitting waveguide is modulated in the external waveguide by the electroabsorption effect.
摘要翻译：公开了一种半导体集成发光器件，其包括包括发光层的发光波导和直接耦合到发光波导的外部波导。根据本发明，发光波导和外部波导相互层叠在直接耦合在一起的区域附近。通过电吸收效应在外部波导管中调制来自发光波导的光输出的强度。

7. 发明授权

US5359679A Optical modulator 失效
标题翻译：光调制器
公开(公告)号：US5359679A
公开(公告)日：1994-10-25
申请号：US72986
申请日：1993-06-04
申请人： Hideaki Tanaka , Masatoshi Suzuki , Yuichi Matsushima
发明人： Hideaki Tanaka , Masatoshi Suzuki , Yuichi Matsushima
IPC分类号： G02B6/12 , G02F1/015 , G02F1/017 , G02F1/025 , G02B6/10
CPC分类号： B82Y20/00 , G02B6/12004 , G02F1/025 , G02F1/01708 , G02F2001/0157
摘要： An optical modulator in which waveguide regions are disposed at opposite ends of a modulation region to reduce the capacitance of the device and prevent pn junctions from exposure to air. On an n-side electrode there are laminated a substrate, an n-type clad layer and an optical modulation waveguide layer. A modulation region lies at the center of the optical modulation waveguide layer along the direction of travel of light, and two waveguide regions are disposed at opposite ends of the modulation region, respectively. On the optical modulation waveguide layer which constitutes the modulation region there are laminated a non-doped layer, a p-type clad layer and a p-side electrode, and a semi-insulating semiconductor is formed on the optical modulation waveguide layer which forms the two waveguide regions.
摘要翻译：一种光调制器，其中波导区域设置在调制区域的相对端，以减小器件的电容并防止pn结暴露于空气。在n侧电极上层压有基板，n型覆盖层和光调制波导层。调制区域沿着光的行进方向位于光调制波导层的中心，并且两个波导区域分别设置在调制区域的相对端。在构成调制区域的光调制波导层上层叠有非掺杂层，p型覆盖层和p侧电极，在形成光电调制波导层的光调制波导层上形成半绝缘半导体两个波导区域。

8. 发明授权

US5401957A Optical waveform shaping device for peforming waveform equalization and timing synchronization 失效
标题翻译：用于波形均衡和定时同步的波形整形装置
公开(公告)号：US5401957A
公开(公告)日：1995-03-28
申请号：US215887
申请日：1994-03-21
申请人： Masatoshi Suzuki , Noboru Edagawa , Hideaki Tanaka , Shu Yamamoto , Yuichi Matsushima
发明人： Masatoshi Suzuki , Noboru Edagawa , Hideaki Tanaka , Shu Yamamoto , Yuichi Matsushima
IPC分类号： H01S5/06 , G02B6/12 , G02F1/015 , H04B10/07 , H04B10/2507 , H01J5/16
CPC分类号： H04B10/299
摘要： To perform waveform shaping, retiming and amplification of the transmitted pulse signal of a binary PCM fiber optic communication employing an optical pulse signal which has a pulse duty factor within 1 with respect to a time slot, an optical waveform shaping device is proposed in which the optical pulse signal is branched by an optical branch circuit into two optical signals. The one transmitted optical signal passes through a photodetector, a band-pass filter for extracting the fundamental frequency component of the signal, an amplifier and a delay circuit, so that the signal is converted to a sinusoidal voltage synchronized with the optical pulse signal. The other optical signal passes through a semiconductor electrical absorption type optical modulator which is driven by the sinusoidal voltage and a DC voltage, so that the width of a gate waveform is changed by controlling the amplitude of the sinusoidal voltage and the DC voltage.
摘要翻译：为了对采用相对于时隙的脉冲占空比为1的脉冲信号的二进制PCM光纤通信的发送脉冲信号进行波形整形，重新定时和放大，提出了一种光波形整形装置，其中光脉冲信号由光分支电路分支成两个光信号。一个发送的光信号通过光电检测器，用于提取信号的基频分量的带通滤波器，放大器和延迟电路，使得信号被转换成与光脉冲信号同步的正弦电压。另一个光信号通过由正弦电压和直流电压驱动的半导体吸电型光调制器，从而通过控制正弦电压和直流电压的幅度来改变门波形的宽度。

9. 发明授权

US06744990B1 WDM optical transmission system and an optical transmission line thereof 失效
标题翻译： WDM光传输系统及其光传输线
公开(公告)号：US06744990B1
公开(公告)日：2004-06-01
申请号：US09434679
申请日：1999-11-05
申请人： Masatoshi Suzuki , Noriyuki Takeda , Noboru Edagawa , Hideaki Tanaka , Shinichi Nakagawa , Hidenori Taga , Koji Goto
发明人： Masatoshi Suzuki , Noriyuki Takeda , Noboru Edagawa , Hideaki Tanaka , Shinichi Nakagawa , Hidenori Taga , Koji Goto
IPC分类号： H04B1012
CPC分类号： H04B10/2935 , H04B10/25253 , H04J14/0221
摘要： An object of the present invention is to realize almost the same transmission characteristic in all wavelengths at a transmission rate of 10 Gb/s or more. An optical transmitter 10 outputs WDM signal light multiplexed with signal light of a plurality of wavelengths toward an optical transmission line 12. The optical transmission line 12 comprises an optical transmission fiber 14, an optical repeating amplifier 16 and a dispersion compensating fiber 18. The gain characteristic of the optical repeating amplifier 16 is set so that the gain becomes the maximum at the effective zero dispersion wavelength of the optical transmission line 12 and that lowers inversely proportional to the distance from the effective zero dispersion wavelength. The whole optical transmission line 12 is set so that the peak power deviation between the effective zero dispersion wavelength &lgr;0 and the wavelength &lgr;1 or &lgr;n on both end becomes approximately 4 dB.
摘要翻译：本发明的目的是以10Gb / s以上的传输速率实现所有波长的几乎相同的传输特性。光发送器10将与多个波长的信号光复用的WDM信号光输出到光传输线12.光传输线12包括光传输光纤14，光中继放大器16和色散补偿光纤18.增益光学重复放大器16的特性被设置为使得增益在光传输线路12的有效零色散波长处变为最大值，并且降低与距有效零色散波长的距离成反比。整个光传输线路12被设置为使得有效零色散波长λ0和两端的波长λ1或兰博丹之间的峰值功率偏差变为大约4dB。

10. 发明授权

US06516110B2 Optical cross-connector 失效
公开(公告)号：US06516110B2
公开(公告)日：2003-02-04
申请号：US09955726
申请日：2001-09-18
申请人： Michiaki Hayashi , Kazuho Ohara , Hideaki Tanaka , Masatoshi Suzuki
发明人： Michiaki Hayashi , Kazuho Ohara , Hideaki Tanaka , Masatoshi Suzuki
IPC分类号： G02B626
CPC分类号： G02B6/353 , G02B6/3514 , G02B6/3546 , G02B6/356 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0212 , H04J14/0283 , H04J14/0297 , H04Q11/0005 , H04Q2011/0015 , H04Q2011/0024 , H04Q2011/003 , H04Q2011/0039 , H04Q2011/0043 , H04Q2011/0058 , H04Q2011/0081 , H04Q2011/0083
摘要： To improve the reliability of matrix switches of redundant configuration, a splitter (14) splits each of a plurality of input lights into two portions and applies them to corresponding input ports of matrix switches (10a and 10b). The working matrix switch (10a) connects between desired input and output ports and an optical shutter (30a) connecting to an output port (#1) is in a light transmission state. The matrix switch (10b) connects all its input ports (#1 through #8) to an output port (#1). An optical shutter (30b) connecting to an output port (#1) is in a light blocking state. A combiner (26) combines the lights which are output from the output ports (#1) of the matrix switches (10a and 10b) and transmitted through the optical shutters (30a and 30b) and also combines the output lights from the corresponding output ports (#2 through #8) of the matrix switches (10a and 10b).

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