公开(公告)号：US06583917B2

公开(公告)日：2003-06-24

申请号：US10022255

申请日：2001-12-20

申请人： Andrea Melloni ,  Mario Martinelli

发明人： Andrea Melloni ,  Mario Martinelli

IPC分类号： G02F103

CPC分类号： G02F1/225 ,  G02F1/0121 ,  G02F1/2255

摘要： An optical intensity modulator for high-speed RZ and NRZ data modulation based on a balanced three-arm Mach-Zehnder interferometer. The three arms are joined at the input and output sides of the device by three-way couplers. The input coupler is structured to couple approximately equal powers into the first and third arms and no more than 50% power into the second arm. In the straight sections of the arms, there is arranged an AC electrode structure for applying an RF modulation signal and a DC electrode structure for biasing the device at a working point. The AC electrode structure is arranged so that an applied modulation signal induces a negative phase shift (−&Dgr;&phgr;) in the first arm in relation to the second arm and a positive phase shift (+&Dgr;&phgr;) in the third arm in relation to the second arm.

摘要翻译： 一种基于平衡三臂马赫 - 曾德干涉仪的高速RZ和NRZ数据调制的光强度调制器。 三个臂通过三通耦合器在设备的输入和输出侧连接。 输入耦合器被构造成将大致相等的功率耦合到第一和第三臂中，并且不超过50％的功率进入第二臂。 在臂的直线部分中，布置有用于施加RF调制信号的AC电极结构和用于在工作点处偏置该装置的DC电极结构。 AC电极结构被布置成使得所施加的调制信号相对于第二臂在第一臂中引起负相移（-DELTAFT），并且相对于第二臂在第三臂中产生正相移（+ DELTAphi） 。

公开(公告)号：US06483629B1

公开(公告)日：2002-11-19

申请号：US09217841

申请日：1998-12-22

申请人： Pierpaolo Boffi ,  Lucia Marazzi ,  Mario Martinelli ,  Paola Parolari

发明人： Pierpaolo Boffi ,  Lucia Marazzi ,  Mario Martinelli ,  Paola Parolari

IPC分类号： H01S330

CPC分类号： H01S3/0057 ,  H01S3/06754 ,  H01S3/2383 ,  H01S3/302

摘要： An optical window signal generator which begins generation of an optical output signal in response to an optical activation pulse, and terminates generation of the optical output signal in response to an optical deactivation pulse. The rise time of the optical output signal is equal to the rise time of the optical activation pulse, and its fall time is equal to the rise time of the optical deactivation pulse.

摘要翻译： 一种光学窗口信号发生器，其响应于光学激活脉冲开始产生光学输出信号，并且响应于光学去激活脉冲终止光学输出信号的产生。 光输出信号的上升时间等于光激活脉冲的上升时间，其下降时间等于光失活脉冲的上升时间。

公开(公告)号：US5333045A

公开(公告)日：1994-07-26

申请号：US838886

申请日：1992-02-21

申请人： Valeria Gusmeroli ,  Mario Martinelli

发明人： Valeria Gusmeroli ,  Mario Martinelli

IPC分类号： G01D5/26 ,  G01D5/353 ,  G01B9/02

CPC分类号： G01D5/35303 ,  G01D5/266

摘要： A superluminescent source emits a wide-band light beam, that is frequency modulated by a filter with a pass band centred on a frequency that is made to vary according to a predetermined law so as to frequency modulate the light beam. Means for splitting and recombining beams determine a mutual phase shift between two components of the beam that depends on the physical magnitude to be measured and is detected by a detector as an indication of the value of the magnitude itself.

摘要翻译： 超发光源发射宽带光束，其由滤波器进行频率调制，滤波器的通带以中心在根据预定定律变化的频率上，以便对光束进行频率调制。 用于分束和重组光束的装置确定了取决于待测量的物理大小并由检测器检测的光束的两个分量之间的相互相移作为幅度本身的值的指示。