Tunable semiconductor laser
    3.
    发明授权
    Tunable semiconductor laser 失效
    可调谐半导体激光器

    公开(公告)号:US5319667A

    公开(公告)日:1994-06-07

    申请号:US35918

    申请日:1993-03-22

    摘要: An interferometric semiconductor laser includes a cavity in the form of a Y and at east three individually actuatable active segments. A central segment couples together the individually actuatable active segments. The central segment is an active or passive segment that acts as a beam divider. The arrangement of the segments forms two resonator paths which contain at least one common active segment. At least one resonator path includes an active segment that does not belong to the other resonator path. In the absence of, or with the same actuation of the active segments, the optical path length of one resonator path differs from the optical path length of the other resonator path.

    摘要翻译: 干涉式半导体激光器包括Y形式的空腔和东部三个可单独致动的活动段。 中央段将可单独致动的活动段连接在一起。 中心段是作为分束器的有源或无源段。 段的排列形成两个共振器路径,其包含至少一个共同的有效段。 至少一个谐振器路径包括不属于另一谐振器路径的有源段。 在不存在或者以相同的激活有源段的情况下,一个谐振器路径的光路长度与另一谐振器路径的光路长度不同。

    Optical modulator circuit
    6.
    发明授权
    Optical modulator circuit 失效
    光调制器电路

    公开(公告)号:US5793516A

    公开(公告)日:1998-08-11

    申请号:US568938

    申请日:1995-12-07

    CPC分类号: G02F1/0121 G02F1/015

    摘要: A circuit arrangement is presented for an optical modulator with an optical modulator diode (MD) driven in the blocking direction which, in addition to a shunt resistor (RN) wired in parallel with the modulator diode, contains a damping resistor (RD) wired ahead of the modulator diode, for attenuating unwanted reflections. The damping resistor is preferably wired ahead of the parallel circuit of modulator diode and shunt resistor, and forms part of the terminal resistance of the connecting line carrying the modulation signal (U.sub.m).

    摘要翻译: 提出了一种用于光调制器的电路布置,其中光调制器二极管(MD)以阻塞方向驱动,除了与调制二极管并联布线的分流电阻器(RN)之外,还包括一个前面布线的阻尼电阻器(RD) 的调制器二极管,用于衰减不需要的反射。 阻尼电阻优选地在调制二极管和分流电阻的并联电路前面布线,并形成承载调制信号(Um)的连接线的端电阻的一部分。

    Device and method for classifying objects in an environmentally adaptive
manner
    7.
    发明授权
    Device and method for classifying objects in an environmentally adaptive manner 失效
    以环境适应的方式对对象进行分类的装置和方法

    公开(公告)号:US5949367A

    公开(公告)日:1999-09-07

    申请号:US23781

    申请日:1998-02-13

    CPC分类号: G06K9/6267 G01S7/417

    摘要: Neural networks are used to classify objects automatically by means of Doppler-broadened radar echo signals. The classification device KK contains a neural network (NET, NET2) which has an input layer (IL) of input nodes (IN1, . . . , IN57) for features (M) of the Doppler-broadened radar echo signals, and an output layer (OL) of output nodes (ON1, ON2, ON3) for predetermined classes to which the objects can be allocated. The neural network (NET, NET2) is adapted to the external conditions prevailing at the time of the classification operation. The adaptation takes place either via accessible input nodes (ZN1, ZN2) into which control information (SI) can be entered, and which cause the neural network (NET) to adapt to one or to several external influence factors, or via a selection device (SEL) which, from the parameters (P1, . . . , P4) of several neural networks stored in a memory (MEM), which are trained with training data under respectively different conditions of external influence factors, selects the one most similar to the prevailing conditions.

    摘要翻译: 神经网络用于通过多普勒扩展的雷达回波信号自动对物体进行分类。 分类装置KK包含神经网络(NET,NET2),其具有用于多普勒扩展雷达回波信号的特征(M)的输入节点(IN1,...,IN57)的输入层(IL)和输出 输出节点(ON1,ON2,ON3)的层(OL),用于可以分配对象的预定类别。 神经网络(NET,NET2)适应分类操作时的外部条件。 适应通过可以输入控制信息(SI)的可访问输入节点(ZN1,ZN2)进行,并且使得神经网络(NET)适应于一个或多个外部影响因素,或者经由选择设备 (SEL),其从存储在存储器(MEM)中的几个神经网络的参数(P1,...,P4)分别在不同的外部影响因素的条件下训练训练数据,选择最相似的 现行条件。