公开(公告)号：US5654814A

公开(公告)日：1997-08-05

申请号：US563356

申请日：1995-11-28

申请人： Toshihiko Ouchi ,  Takeo Ono ,  Masao Majima

发明人： Toshihiko Ouchi ,  Takeo Ono ,  Masao Majima

IPC分类号： H01L27/15 ,  B82Y10/00 ,  B82Y20/00 ,  G02B6/12 ,  G02B6/124 ,  G02B6/34 ,  G02B6/42 ,  H01L31/10 ,  H01S5/00 ,  H01S5/026 ,  H01S5/0625 ,  H01S5/10 ,  H01S5/30 ,  H01S5/34 ,  H01S5/40 ,  H01S5/50 ,  H04B10/07 ,  H04B10/25 ,  H04B10/272 ,  H04B10/278 ,  H04B10/54 ,  H04B10/548 ,  H04B10/564 ,  H04B10/572 ,  H04J14/00 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06 ,  H04B10/00

CPC分类号： H04J14/06 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/4246 ,  H01S5/5045 ,  H04B10/2572 ,  H04J14/02 ,  H04J14/04 ,  G02B2006/1204 ,  H01S5/026 ,  H01S5/0264 ,  H01S5/0265 ,  H01S5/06258 ,  H01S5/1003 ,  H01S5/3404 ,  H01S5/4031 ,  H01S5/4068 ,  H01S5/5009

摘要： An optical semiconductor apparatus having no polarization dependency and an optical communication system using the semiconductor apparatus are provided. In an optical communication system wherein a signal is demultiplexed by using a semiconductor waveguide type filter disposed on a receiver side, two semiconductor lasers disposed on a transmitter side modulate two light signals having different wavelengths using a common modulation signal and transmit the modulated light signals. One of the different wavelengths is accorded, for example, to the TE mode transmission wavelength of the filter, and the other is accorded, for example, to the TM mode transmission wavelength of the filter. On the receiver side, lights at different wavelengths may be branched into two light portions and the branched light portions may be respectively detected by two photodetectors.

摘要翻译： 提供一种没有偏振依赖性的光学半导体装置和使用该半导体装置的光通信系统。 在通过使用设置在接收机侧的半导体波导型滤波器对信号进行解复用的光通信系统中，设置在发送器侧的两个半导体激光器使用公共调制信号来调制具有不同波长的两个光信号并发送调制的光信号。 不同波长之一例如与滤波器的TE模式传输波长相一致，另一个符合例如滤波器的TM模式传输波长。 在接收器侧，不同波长的光可以分支成两个光部分，并且分支光部分可以分别由两个光电检测器检测。

公开(公告)号：US5414549A

公开(公告)日：1995-05-09

申请号：US191180

申请日：1994-02-03

申请人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Toru Nakata

发明人： Michiyo Nishimura ,  Jun Nitta ,  Kenji Nakamura ,  Masao Majima ,  Toru Nakata

IPC分类号： G02F1/35 ,  B82Y10/00 ,  B82Y20/00 ,  H01L27/15 ,  H01S5/00 ,  H01S5/026 ,  H01S5/32 ,  H01S5/34 ,  H01S5/50 ,  H04B10/27 ,  H04B10/272 ,  H04B10/275 ,  H04B10/278 ,  H04B10/29 ,  H04B10/297 ,  H01S3/19 ,  G02B6/12 ,  H01L33/00

CPC分类号： B82Y20/00 ,  H01S5/026 ,  H01S5/34 ,  H01S5/5009 ,  H04B10/2914 ,  H01S2301/14 ,  H01S5/3203

摘要： A semiconductor optical amplifying apparatus includes: a substrate; an active layer having a quantum well structure formed on the substrate, the active layer guiding first waveguide mode light and second waveguide mode light having a polarization direction perpendicular to that of the first waveguide mode light and amplifying the first waveguide mode light and the second waveguide mode light, the active layer having quantum wells such that projected quantization axes obtained by projecting quantization axes of the quantum wells thereof on a plane perpendicular to a light waveguide direction are inclined at 45.degree. with respect to vibration directions of electric field vectors of the first waveguide mode light and the second waveguide mode light; and an electrode for supplying a current to the active layer.

摘要翻译： 一种半导体光放大装置，包括：基板; 具有形成在基板上的量子阱结构的有源层，有源层引导第一波导模式光和具有与第一波导模式光垂直的偏振方向的第二波导模式光，并且放大第一波导模式光和第二波导 有源层具有量子阱，使得通过将量子阱的量子轴投影在垂直于光波导方向的平面上而获得的投影量化轴相对于第一像素的电场矢量的振动方向倾斜45度 波导模式光和第二波导模式光; 以及用于向有源层提供电流的电极。

公开(公告)号：US5396360A

公开(公告)日：1995-03-07

申请号：US240818

申请日：1994-05-11

申请人： Masao Majima

发明人： Masao Majima

IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/10 ,  H01S3/131 ,  H01S5/00 ,  H01S5/0683 ,  H01S5/50 ,  H04J14/00 ,  H04J14/02 ,  H01S3/00 ,  H04B10/02

CPC分类号： H04J14/0221 ,  H01S5/0683 ,  H01S5/50

摘要： An optical communication system comprises: a plurality of optical communication apparatus for communicating signals by using a plurality of communicating lights having different wavelengths; an optical transmitter for transmitting a controlling light having a different wavelength than any of the plurality of wavelengths; an optical transmission line for interconnecting the optical transmitter and the optical communication apparatus to transmit the communicating lights and the controlling light; an optical amplifier for amplifying the communicating lights and the controlling light transmitted over the optical transmission line; and control circuit for discriminating the controlling light amplified by the optical amplifier from the communicating lights and controlling a gain of the optical amplifier to keep a light intensity of the controlling light at a constant level.

摘要翻译： 光通信系统包括：多个光通信装置，用于通过使用具有不同波长的多个通信光来传送信号; 用于发送具有与所述多个波长中的任一个波长不同的波长的控制光的光发射器; 用于互连光发射机和光通信装置以传送通信灯和控制光的光传输线; 用于放大通信光的光放大器和通过光传输线传输的控制光; 以及用于鉴别由光放大器放大的控制光与通信光的控制电路，并控制光放大器的增益以将控制光的光强保持在恒定水平。