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    • 8. 发明授权
    • Semiconductor laser device, semiconductor laser module, rare-earth-element-doped optical fiber amplifier and fiber laser
    • 半导体激光器件,半导体激光器模块,稀土元素掺杂光纤放大器和光纤激光器
    • US06477191B1
    • 2002-11-05
    • US09538728
    • 2000-03-30
    • Satoru OkadaTsuyoshi FujimotoYasuo Oeda
    • Satoru OkadaTsuyoshi FujimotoYasuo Oeda
    • H01S500
    • H01S5/12
    • A semiconductor laser device includes: an active layer; upper waveguide layers and a lower waveguide layer sandwiching the active layer therebetween; upper and lower cladding layers sandwiching the active layer and the upper and lower waveguide layers therebetween; and a current-narrowing layer defining a current-injection region for injecting current to the active layer, wherein a diffraction grating having a periodical structure in a resonance cavity direction is buried in any one of the waveguide layers, the diffraction grating being present in at least a part of the current-injection region; and the waveguide layer in which the diffraction grating is buried and the cladding layer adjoining to that waveguide layer forms an interface which is substantially flat in the resonance cavity direction. With the constitution, a waveguide structure which has a diffraction grating offering a higher flexibility in design and manufacture in terms of the coupling efficiency is realized, thereby easily providing a dynamic single-mode semiconductor laser device with higher reproducibility, yield and reliability.
    • 半导体激光器件包括:有源层; 上波导层和夹在其间的有源层的下波导层; 夹层有源层和上下波导层的上下包层; 以及限定用于向有源层注入电流的电流注入区域的电流变窄层,其中在谐振腔方向上具有周期性结构的衍射光栅被掩埋在任何一个波导层中,衍射光栅存在于 电流注入区域的至少一部分; 并且其中掩埋衍射光栅的波导层和与该波导层相邻的包层形成在谐振腔方向上基本上平坦的界面。 利用该结构,实现了在耦合效率方面具有在设计和制造中具有较高灵活性的衍射光栅的波导结构,由此容易地提供具有更高再现性,产率和可靠性的动态单模半导体激光器件。
    • 10. 发明授权
    • Communication adaptor for game set
    • 游戏机通讯适配器
    • US5396225A
    • 1995-03-07
    • US257732
    • 1994-06-09
    • Satoru OkadaHitoshi YamagamiKatsuya Yamano
    • Satoru OkadaHitoshi YamagamiKatsuya Yamano
    • A63F9/00A63F13/12H04L29/06H04Q1/00
    • A63F13/31A63F13/12A63F13/23A63F13/92H04L29/06A63F2300/204A63F2300/402
    • A communication adapter which is used with a plurality of game sets for transmitting and receiving data related to the game states of the game sets. Each game set including a serial interface and a buffer memory for temporarily storing transmit/receive data. The adapter including: a housing; a connection terminal for each game set; data input, data output and clock output ports, a clock signal generator, format converter and transmit/receive storage means. The clock signal generating means applies the same clock signal used for data communication with the game sets to each clock output port so that data to be transmitted to each game set and data received from each game set is synchronized with the clock signal whereby reliable communication is obtained with two or more game sets without the use of modems.
    • 一种与多个游戏机一起使用的通信适配器,用于发送和接收与游戏机的游戏状态有关的数据。 每个游戏设置包括串行接口和缓冲存储器,用于临时存储发送/接收数据。 适配器包括:壳体; 每个游戏机的连接终端; 数据输入,数据输出和时钟输出端口,时钟信号发生器,格式转换器和发送/接收存储装置。 时钟信号发生装置将用于与游戏机的数据通信相同的时钟信号施加到每个时钟输出端口,使得要发送到每个游戏机的数据和从每个游戏机接收的数据与时钟信号同步,从而可靠的通信是 获得与两个或更多的游戏机没有使用调制解调器。