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1. 发明申请

US20140308047A1 OPTIMUM MODULATOR BIAS SYSTEMS AND METHODS IN COHERENT OPTICAL TRANSMITTERS 有权
标题翻译：最优调制器偏置系统和相干光发射机的方法
公开(公告)号：US20140308047A1
公开(公告)日：2014-10-16
申请号：US13860827
申请日：2013-04-11
申请人： Gary Mak , Yves Beaulieu , Mohammad Sotoodeh
发明人： Gary Mak , Yves Beaulieu , Mohammad Sotoodeh
IPC分类号： G02F1/01
CPC分类号： H04B10/548 , G02F1/0123 , G02F1/2255 , H04B10/5055 , H04B10/50575 , H04B10/50577 , H04B10/532 , H04B10/541 , H04B10/5561
摘要： A modulator bias selection method, a coherent optical transmitter, and optical modulator solve the problem of generating a correct constellation using the bias points with the minimum phase adjustment range. The optimum modulator bias systems and methods include a coherent optical transmitter with control of four (XI, XQ, YI, YQ) quadrature data signals via a transmitter (Tx) application specific integrated circuit (ASIC), with a modulator bias controller which implements an algorithm to find the optimum bias points. The optimum bias points yield a correct constellation with minimum phase/bias adjustment. An algorithm is used to find the optimum bias solution using fast, simple method, adjusting only one quadrature at a time and exploiting a control feature of the Tx ASIC. This algorithm is significantly simpler than a generalized search, is a local algorithm, and uses only DC power measurement at the transmitter.
摘要翻译：调制器偏置选择方法，相干光发射机和光调制器使用具有最小相位调整范围的偏置点来解决产生正确星座的问题。最佳调制器偏置系统和方法包括通过发射机（Tx）专用集成电路（ASIC）控制四个（XI，XQ，YI，YQ）正交数据信号的相干光发射机，具有调制器偏置控制器，其实现算法找到最佳偏好点。最佳偏置点产生具有最小相位/偏置调整的正确星座。使用一种算法来使用快速，简单的方法找到最佳的偏置解决方案，一次调整一个正交，并利用Tx ASIC的控制特性。该算法比广义搜索要简单得多，是局部算法，仅在发射机上使用直流功率测量。

2. 发明授权

US09124364B1 Quadrature power balance control in optical transmitters 有权
标题翻译：光发射机中的正交功率平衡控制
公开(公告)号：US09124364B1
公开(公告)日：2015-09-01
申请号：US13483622
申请日：2012-05-30
申请人： Mohammad Sotoodeh , Gary Mak , Yves Beaulieu
发明人： Mohammad Sotoodeh , Gary Mak , Yves Beaulieu
IPC分类号： H04B10/079 , H04B10/50
CPC分类号： H04B10/0799 , H04B10/50577 , H04B10/5561
摘要： A method of controlling an optical transmitter having a Dual Parallel Mach-Zehnder (DPMZ) modulator. An I-Q power balance between respective branches of the DPMZ modulator is detected, and at least one parameter of the DPMZ modulator is adjusted to drive the I-Q power balance to a predetermined target value. An optical transmitter may have Quad Parallel Mach-Zehnder (QPMZ) modulator having a pair of parallel DPMZ modulators for modulating respective X- and Y-polarization lights. In such cases, an X-Y power imbalance between the two polarization lights is detected, and at least one parameter of the QPMZ modulator is adjusted to drive the X-Y power imbalance to a predetermined value.
摘要翻译：一种控制具有双平行马赫曾德（DPMZ）调制器的光发射机的方法。检测到DPMZ调制器的各个分支之间的I-Q功率平衡，并且调整DPMZ调制器的至少一个参数以将I-Q功率平衡驱动到预定的目标值。光发射机可以具有用于调制相应的X和Y偏振光的具有一对并行DPMZ调制器的Quad Parallel Mach-Zehnder（QPMZ）调制器。在这种情况下，检测到两个偏振光之间的X-Y功率不平衡，并且调整QPMZ调制器的至少一个参数以将X-Y功率不平衡驱动到预定值。

3. 发明授权

US09059805B2 Optimum modulator bias systems and methods in coherent optical transmitters 有权
标题翻译：相干光发射机中的最佳调制器偏置系统和方法
公开(公告)号：US09059805B2
公开(公告)日：2015-06-16
申请号：US13860827
申请日：2013-04-11
申请人： Gary Mak , Yves Beaulieu , Mohammad Sotoodeh
发明人： Gary Mak , Yves Beaulieu , Mohammad Sotoodeh
IPC分类号： H04B10/50 , H04B10/54 , H04B10/556
CPC分类号： H04B10/548 , G02F1/0123 , G02F1/2255 , H04B10/5055 , H04B10/50575 , H04B10/50577 , H04B10/532 , H04B10/541 , H04B10/5561
摘要： A modulator bias selection method, a coherent optical transmitter, and optical modulator solve the problem of generating a correct constellation using the bias points with the minimum phase adjustment range. The optimum modulator bias systems and methods include a coherent optical transmitter with control of four (XI, XQ, YI, YQ) quadrature data signals via a transmitter (Tx) application specific integrated circuit (ASIC), with a modulator bias controller which implements an algorithm to find the optimum bias points. The optimum bias points yield a correct constellation with minimum phase/bias adjustment. An algorithm is used to find the optimum bias solution using fast, simple method, adjusting only one quadrature at a time and exploiting a control feature of the Tx ASIC. This algorithm is significantly simpler than a generalized search, is a local algorithm, and uses only DC power measurement at the transmitter.
摘要翻译：调制器偏置选择方法，相干光发射机和光调制器使用具有最小相位调整范围的偏置点来解决产生正确星座的问题。最佳调制器偏置系统和方法包括通过发射机（Tx）专用集成电路（ASIC）控制四个（XI，XQ，YI，YQ）正交数据信号的相干光发射机，具有调制器偏置控制器，其实现算法找到最佳偏好点。最佳偏置点产生具有最小相位/偏置调整的正确星座。使用一种算法来使用快速，简单的方法找到最佳的偏置解决方案，一次调整一个正交，并利用Tx ASIC的控制特性。该算法比广义搜索要简单得多，是局部算法，仅在发射机上使用直流功率测量。

4. 发明申请

US20050007642A1 Optical E-field modulation using a Mach-Zehnder interferometer 有权
标题翻译：使用马赫 - 曾德干涉仪的光学电场调制
公开(公告)号：US20050007642A1
公开(公告)日：2005-01-13
申请号：US10677223
申请日：2003-10-03
申请人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
发明人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
IPC分类号： H04B10/18 , G02F1/00 , G02B26/00
CPC分类号： G02F1/225 , H04B10/25137 , H04B10/505
摘要： A method for modulating the E-field of an optical carrier signal utilizes a Mach-Zehnder modulator having a pair of independently controllable branches. A pair of independent branch drive signals VL(t) and VR(t) are derived. Each branch of the MZ modulator is driven with a respective one of the independent branch drive signals. By this means, a low cost conventional MZ modulator (interferometer) can be used to perform complex modulation of the E-field of the optical carrier. In some embodiments, this functionality is used to facilitate precompensation of optical impairments of an optical communications system.
摘要翻译：用于调制光载波信号的电场的方法利用具有一对可独立控制的分支的马赫 - 曾德调制器。导出一对独立的分支驱动信号VL（t）和VR（t）。 MZ调制器的每个分支由独立的分支驱动信号中的相应一个驱动。通过这种方式，可以使用低成本的常规MZ调制器（干涉仪）来执行光学载体的E场的复杂调制。在一些实施例中，该功能用于促进光学通信系统的光学损伤的预补偿。

5. 发明授权

US07023601B2 Optical E-field modulation using a Mach-Zehnder interferometer 有权
标题翻译：使用马赫 - 曾德干涉仪的光学电场调制
公开(公告)号：US07023601B2
公开(公告)日：2006-04-04
申请号：US10677223
申请日：2003-10-03
申请人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
发明人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
IPC分类号： G02F1/03 , G02F1/07
CPC分类号： G02F1/225 , H04B10/25137 , H04B10/505
摘要： A method for modulating the E-field of an optical carrier signal utilizes a Mach-Zehnder modulator having a pair of independently controllable branches. A pair of independent branch drive signals VL(t) and VR(t) are derived. Each branch of the MZ modulator is driven with a respective one of the independent branch drive signals. By this means, a low cost conventional MZ modulator (interferometer) can be used to perform complex modulation of the E-field of the optical carrier. In some embodiments, this functionality is used to facilitate precompensation of optical impairments of an optical communications system.
摘要翻译：用于调制光载波信号的电场的方法利用具有一对可独立控制的分支的马赫 - 曾德调制器。导出一对独立的分支驱动信号V L（t）和V R（t）。 MZ调制器的每个分支由独立的分支驱动信号中的相应一个驱动。通过这种方式，可以使用低成本的常规MZ调制器（干涉仪）来执行光学载体的E场的复杂调制。在一些实施例中，该功能用于促进光学通信系统的光学损伤的预补偿。

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