公开(公告)号：US06304350B1

公开(公告)日：2001-10-16

申请号：US09070608

申请日：1998-04-30

申请人： Christopher Richard Doerr ,  Charles H. Joyner ,  Rene Henri Monnard ,  Lawrence Warren Stulz ,  Martin Zirngibl

发明人： Christopher Richard Doerr ,  Charles H. Joyner ,  Rene Henri Monnard ,  Lawrence Warren Stulz ,  Martin Zirngibl

IPC分类号： H04J1402

CPC分类号： H04J14/0221 ,  H04B10/506 ,  H04B10/564 ,  H04B10/572 ,  H04J14/02

摘要： Temperature compensation of a wavelength-division-multiplexed (WDM) passive optical network (PON) communication system uses power measurements from each of it remote nodes (RNs) to adjust the frequency of an associated multifrequency laser (MFL). Changes in the power level at each RN caused by frequency drift of its waveguide grating router (WGR), due to changes in the WGR temperature, is determined by monitoring the power level received at each RN and corrected by appropriate changes in the temperature of the associated MFL. The WGR uses one output port (e.g., channel 1) which is looped-back through the WGR a second time to increase the temperature sensitivity of the power measurements. A temperature-control algorithm controls the temperature of the MFL as a function of changes in the received power at the WGR.

摘要翻译： 波分复用（WDM）无源光网络（PON）通信系统的温度补偿使用其每个远程节点（RN）的功率测量来调整相关多频激光器（MFL）的频率。 通过监视在每个RN处接收到的功率电平并通过适当的温度变化来校正由于WGR温度的变化而导致的每个RN由于其波导光栅路由器（WGR）的频率漂移引起的功率电平的变化 相关MFL。 WGR使用一个输出端口（例如通道1），该输出端口通过WGR环回第二次以增加功率测量的温度灵敏度。 温度控制算法根据WGR接收功率的变化来控制MFL的温度。

公开(公告)号：US6055250A

公开(公告)日：2000-04-25

申请号：US42314

申请日：1998-03-13

申请人： Christopher Richard Doerr ,  Charles H. Joyner ,  Rene Henri Monnard ,  Lawrence Warren Stulz

发明人： Christopher Richard Doerr ,  Charles H. Joyner ,  Rene Henri Monnard ,  Lawrence Warren Stulz

IPC分类号： H01S5/026 ,  H01S3/082

CPC分类号： H01S5/026 ,  H01S5/0268 ,  H01S5/4062 ,  H01S5/4068 ,  H01S5/4087

摘要： A multifrequency laser (MFL) eliminates nonlinearities produced in the "shared" waveguide of the MFL laser (the section in which all the lightwaves from all the lasers pass) by either making the shared waveguide as short as possible to mimimize the production of mixing product signals or using a channel spacing that is unequal such that any mixing product signals formed from the multifrequency optical laser signal do not overlap in frequency with any of the signals of the multifrequency optical laser signal.

摘要翻译： 多频激光器（MFL）消除了MFL激光器的“共享”波导（所有激光器的所有光波段通过的部分）中产生的非线性，通过使共享波导尽可能短以模拟混合产物的产生 信号或使用不相等的信道间隔，使得由多频光学激光信号形成的任何混合乘积信号不与多频光学激光信号中的任何信号的频率重叠。

公开(公告)号：US6064788A

公开(公告)日：2000-05-16

申请号：US911197

申请日：1997-08-14

申请人： Mujibun Nisa Khan ,  Rene Henri Monnard

发明人： Mujibun Nisa Khan ,  Rene Henri Monnard

IPC分类号： G02F1/313 ,  G02B6/10

CPC分类号： G02F1/3137 ,  G02F2203/25

摘要： Methods of using an adiabatic Y-branch digital optical modulator provide a substantially chirp-free modulator by changing the refractive index of only a first output branch of the modulator in response to a modulating signal. A second output branch of the modulator, where no refractive index change is induced, is used as the modulator output. The frequency chirp in this Y-branch modulator is negligible because the modulator output waveguide branch experiences little or no refractive index change and, therefore, little or no phase shift in operation. Substantially all of the phase shift occurs in the waveguide branch where the refractive index change is induced. According to a further embodiment, one or both of the output branches are comprised of one or more tapered waveguide sections.

摘要翻译： 使用绝热Y分支数字光调制器的方法通过响应于调制信号改变仅调制器的第一输出分支的折射率来提供基本上无啁啾的调制器。 调制器的第二输出分支，其中没有引起折射率变化，被用作调制器输出。 该Y分支调制器中的频率啁啾可以忽略不计，因为调制器输出波导分支经历很少或没有折射率变化，因此在操作中几乎没有或没有相移。 基本上所有的相移发生在引起折射率变化的波导支路中。 根据另一实施例，一个或两个输出分支由一个或多个锥形波导部分组成。

公开(公告)号：US06222966B1

公开(公告)日：2001-04-24

申请号：US09222165

申请日：1998-12-29

申请人： Mujibun Nisa Khan ,  Rene Henri Monnard

发明人： Mujibun Nisa Khan ,  Rene Henri Monnard

IPC分类号： G02B626

CPC分类号： G02F1/3138 ,  G02B2006/1215 ,  G02B2006/12195 ,  G02F1/3137 ,  G02F2201/126 ,  G02F2203/25

摘要： Changing the index in the two output branches of a Y-branch optical waveguide in opposite directions, in amounts which are controlled by electrical signals applied to the branches, is used to control the chirp of the signal outputted from the Y-branch optical waveguide. In this manner, predetermined amount of chirp can be add to or subtract from an input signal to the Y-branch optical waveguide. The Y-branch optical waveguide can be fabricated using Group II-VI, Group III-V or Group IV material systems or using an insulating material, such as lithium niobate. The output branches of a semiconductor implemented Y-branch optical waveguide can be fabricated to each include a multiple quantum well for controlling the refractive index of that branch in response to an electrical signal.

摘要翻译： 以Y分支光波导的两个输出分支中的相反方向的变化量，由加到分支上的电信号控制的量来控制从Y分支光波导输出的信号的啁啾。 以这种方式，可以向Y分支光波导的输入信号增加或减少预定量的啁啾。 Y分支光波导可以使用II-VI族，III-V族或IV族材料体系或使用诸如铌酸锂的绝缘材料来制造。 可以制造半导体实现的Y分支光波导的输出分支，每个包括用于响应于电信号来控制该分支的折射率的多量子阱。

公开(公告)号：US5995524A

公开(公告)日：1999-11-30

申请号：US170856

申请日：1998-10-13

申请人： Rene Henri Monnard

发明人： Rene Henri Monnard

IPC分类号： G02B6/34 ,  H01S5/0687 ,  H01S3/10

CPC分类号： G02B6/12019 ,  H01S5/0687 ,  Y10S372/70

摘要： A method of and apparatus for measuring chirp passes an input modulated optical signal through a Waveguide Grating Router (WGR) and processes the signals from adjacent WGR output ports in an oscilloscope, to obtain the real-time dynamic chirp measurements of the modulated optical signal.

摘要翻译： 用于测量啁啾的方法和装置通过波导光栅路由器（WGR）传送输入调制的光信号，并在示波器中处理来自相邻WGR输出端口的信号，以获得调制光信号的实时动态啁啾测量。