公开(公告)号：US20070183465A1

公开(公告)日：2007-08-09

申请号：US10552967

申请日：2004-04-14

申请人： Tommy Mullane ,  David McDonald ,  Thomas Farrell ,  Ciaran Polley ,  Peter Oconnor

发明人： Tommy Mullane ,  David McDonald ,  Thomas Farrell ,  Ciaran Polley ,  Peter Oconnor

IPC分类号： H01S3/10

CPC分类号： H01S5/068 ,  H01S5/0014 ,  H01S5/0617 ,  H01S5/0625

摘要： The invention relates to a method and system for providing a set of continuous tuning regions from a discontinuously tuned laser, by providing a wavelength reference having at least first and second resonance peaks, sweeping the laser across a pre-determined wavelength range of the wavelength reference, and defining, within the laser sweep, one or more regions of continuous tuning operation of the laser, each of the regions corresponding to a response of the laser between adjacent resonance peaks of the wavelength reference. The advantage of the invention is that it provides a way for stitching together continuous regions of a multi-section tunable laser in an efficient and accurate manner.

摘要翻译： 本发明涉及一种用于通过提供具有至少第一和第二共振峰值的波长参考来提供来自不连续调谐的激光器的一组连续调谐区域的方法和系统，将激光扫过波长参考的预定波长范围 并且在所述激光扫描内限定所述激光器的连续调谐操作的一个或多个区域，所述区域中的每一个对应于所述激光在所述波长参考的相邻共振峰之间的响应。 本发明的优点在于它提供了一种以有效和准确的方式将多段可调谐激光器的连续区域拼接在一起的方式。

公开(公告)号：US07649917B2

公开(公告)日：2010-01-19

申请号：US10552967

申请日：2004-04-14

申请人： Tommy Mullane ,  David McDonald ,  Thomas Farrell ,  Ciaran Polley ,  Peter B. O'Connor

发明人： Tommy Mullane ,  David McDonald ,  Thomas Farrell ,  Ciaran Polley ,  Peter B. O'Connor

IPC分类号： H01S3/10

CPC分类号： H01S5/068 ,  H01S5/0014 ,  H01S5/0617 ,  H01S5/0625

摘要： The invention relates to a method and system for providing a set of continuous tuning regions from a discontinuously tuned laser, by providing a wavelength reference having at least first and second resonance peaks, sweeping the laser across a pre-determined wavelength range of the wavelength reference, and defining, within the laser sweep, one or more regions of continuous tuning operation of the laser, each of the regions corresponding to a response of the laser between adjacent resonance peaks of the wavelength reference. The advantage of the invention is that it provides a way for stitching together continuous regions of a multi-section tunable laser in an efficient and accurate manner.

摘要翻译： 本发明涉及一种用于通过提供具有至少第一和第二共振峰值的波长参考来提供来自不连续调谐的激光器的一组连续调谐区域的方法和系统，将激光扫过波长参考的预定波长范围 并且在所述激光扫描内限定所述激光器的连续调谐操作的一个或多个区域，所述区域中的每一个对应于所述激光在所述波长参考的相邻共振峰之间的响应。 本发明的优点在于它提供了一种以有效和准确的方式将多段可调谐激光器的连续区域拼接在一起的方式。

公开(公告)号：US07436864B2

公开(公告)日：2008-10-14

申请号：US10507328

申请日：2003-03-11

申请人： Thomas Farrell ,  Neil Ryan ,  John Levins ,  Tommy Mullane

发明人： Thomas Farrell ,  Neil Ryan ,  John Levins ,  Tommy Mullane

IPC分类号： H01S3/10 ,  H01S3/13

CPC分类号： H01S5/062 ,  H01S5/0617 ,  H01S5/06255 ,  H01S5/0687

摘要： A method relating to the calibration of tuneable lasers is described. The method provides for the provision of correct control currents so as to achieve each of desired output frequencies from the laser. The correct currents are determined by forming a matrix of the output characteristics of the laser at specific tuning currents and processing that matrix to determine stable operating points within the matrix.

摘要翻译： 描述了与可调谐激光器的校准相关的方法。 该方法提供了提供正确的控制电流，以便实现来自激光器的每个期望的输出频率。 通过在特定调谐电流下形成激光器的输出特性的矩阵来确定正确的电流，并处理该矩阵以确定矩阵内的稳定工作点。

公开(公告)号：US20060072631A1

公开(公告)日：2006-04-06

申请号：US10507328

申请日：2003-03-11

申请人： Thomas Farrell ,  Neil Ryan ,  Jobu Levins ,  Tommy Mullane

发明人： Thomas Farrell ,  Neil Ryan ,  Jobu Levins ,  Tommy Mullane

IPC分类号： H01S3/10 ,  H01S3/13

CPC分类号： H01S5/062 ,  H01S5/0617 ,  H01S5/06255 ,  H01S5/0687

摘要： A method relating to the calibration of tuneable lasers is described. The method provides for the provision of correct control currents so as to achieve each of desired output frequencies from the laser. The correct currents are determined by forming a matrix of the output characteristics of the laser at specific tuning currents and processing that matrix to determine stable operating points within the matrix.

摘要翻译： 描述了与可调谐激光器的校准相关的方法。 该方法提供了提供正确的控制电流，以便实现来自激光器的每个期望的输出频率。 通过在特定调谐电流下形成激光器的输出特性的矩阵来确定正确的电流，并处理该矩阵以确定矩阵内的稳定工作点。

公开(公告)号：US20050030986A1

公开(公告)日：2005-02-10

申请号：US10489115

申请日：2002-08-12

申请人： Thomas Farrell ,  Tommy Mullane ,  David MacDonald

发明人： Thomas Farrell ,  Tommy Mullane ,  David MacDonald

IPC分类号： H01S5/06 ,  H01S5/0625 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/125 ,  H01S3/13

CPC分类号： H01S5/06256 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/1209

摘要： A multi-section laser diode control system comprising a multi-section laser diode (10), microprocessor controller (24), digital-to-analogue converter (28), driver circuit (30) and wavelength locker (14) is modified by inclusion of a locking circuit (40) which generates an analogue correction signal . . . 1 Vph responsive to measurements of the laser output made by the wavelength locker. The analogue correction signal is added to the preset phase voltage Vph asserted by the microprocessor controller to provide fast feedback that bypasses the microprocessor controller. This novel feedback is made possible by avoiding the use of the standard prior art control algorithm which requires a division calculation to be performed. Instead, novel control algorithms based purely on additions, subtractions and multiplications are used. The laser can thus be locked to its target output frequency without having to place slow analogue-to-digital and digital-to-analogue converters in the feedback control path.

摘要翻译： 包括多段激光二极管（10），微处理器控制器（24），数模转换器（28），驱动电路（30）和波长锁存器（14）的多段激光二极管控制系统通过包含 锁定电路（40）产生模拟校正信号。 。 。 1 Vph响应波长锁定器的激光输出测量。 模拟校正信号被添加到由微处理器控制器断言的预设相电压Vph，以提供绕过微处理器控制器的快速反馈。 通过避免使用需要执行分割计算的标准现有技术控制算法，可以实现这种新颖的反馈。 相反，使用纯粹基于加法，减法和乘法的新型控制算法。 因此，激光器可以锁定到其目标输出频率，而不必在反馈控制路径中放置慢速模拟数字和数模转换器。

公开(公告)号：US07339962B2

公开(公告)日：2008-03-04

申请号：US10489115

申请日：2002-08-12

申请人： Thomas Farrell ,  Tommy Mullane ,  David MacDonald

发明人： Thomas Farrell ,  Tommy Mullane ,  David MacDonald

IPC分类号： H01S3/13

CPC分类号： H01S5/06256 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/1209

摘要： A multi-section laser diode control system comprising a multi-section laser diode (10), microprocessor controller (24), digital-to-analogue converter (28), driver circuit (30) and wavelength locker (14) is modified by inclusion of a locking circuit (40) which generates an analogue correction signal . . . 1 V ph responsive to measurements of the laser output made by the wavelength locker. The analogue correction signal is added to the preset phase voltage V ph asserted by the microprocessor controller to provide fast feedback that bypasses the microprocessor controller. This novel feedback is made possible by avoiding the use of the standard prior art control algorithm which requires a division calculation to be performed. Instead, novel control algorithms based purely on additions, subtractions and multiplications are used. The laser can thus be locked to its target output frequency without having to place slow analogue-to-digital and digital-to-analogue converters in the feedback control path.

摘要翻译： 包括多段激光二极管（10），微处理器控制器（24），数模转换器（28），驱动电路（30）和波长锁存器（14）的多段激光二极管控制系统通过包含 锁定电路（40）产生模拟校正信号。 。 。 1 V ph响应于由波长锁定器制成的激光输出的测量。 模拟校正信号被添加到由微处理器控制器断言的预设相位电压V ph，以提供绕过微处理器控制器的快速反馈。 通过避免使用需要执行分割计算的标准现有技术控制算法，可以实现这种新颖的反馈。 相反，使用纯粹基于加法，减法和乘法的新型控制算法。 因此，激光器可以锁定到其目标输出频率，而不必在反馈控制路径中放置慢速模拟数字和数模转换器。

公开(公告)号：US07478007B2

公开(公告)日：2009-01-13

申请号：US10533349

申请日：2003-10-30

申请人： Thomas Farrell ,  David McDonald ,  Thomas Mullane

发明人： Thomas Farrell ,  David McDonald ,  Thomas Mullane

IPC分类号： G01K11/30

CPC分类号： H01S5/0014 ,  H01S5/0021 ,  H01S5/0617 ,  H01S5/06256 ,  H01S5/0683 ,  H01S5/1209

摘要： The invention provides a method to compensate for degradation in a tunable laser and ensure its performance by tracking the degradation and adjusting the control information accordingly. This is accomplished by performing some measurements of the output of the tunable laser at an initial setup or calibration procedure. Then, by effecting a periodic repetition of these measurements and using a comparison between these two measurements the present invention provides for a compensation factor for the operating conditions, primarily in the form of a look up table of operating points of the laser. These measurements show how much the operating points of the laser have drifted over the period since the last set of measurements, which provide control informatIon to compensate for degradation in the laser.

摘要翻译： 本发明提供了一种补偿可调激光器的劣化并通过跟踪劣化并相应地调整控制信息来确保其性能的方法。 这是通过在初始设置或校准过程中对可调谐激光器的输出进行一些测量来实现的。 然后，通过进行这些测量的周期性重复并且使用这两个测量之间的比较，本发明主要以激光的操作点的查找表的形式提供了操作条件的补偿因子。 这些测量显示激光器的工作点在自最后一组测量以来的这段时间内漂移了多少，这些测量提供了控制信息来补偿激光器的退化。

公开(公告)号：US20060088068A1

公开(公告)日：2006-04-27

申请号：US11251117

申请日：2005-10-13

申请人： Thomas Farrell ,  David McDonald

发明人： Thomas Farrell ,  David McDonald

IPC分类号： H01S3/13

CPC分类号： H01S5/0612 ,  G01J3/4338 ,  G01J9/0246 ,  H01S5/0014 ,  H01S5/028 ,  H01S5/12

摘要： The invention provides a swept wavelength laser system comprising: a module providing a laser source with an optical output where the laser wavelength sweeps a wavelength range of the laser source with low wavelength noise at a sweep frequency rate; and a real-time high speed single measurement of an optical artefact over a single wavelength sweep wherein the laser source is optimized for low noise operation.

摘要翻译： 本发明提供了一种扫频波长激光系统，包括：模块，其向激光源提供光输出，其中激光波长以扫描频率以低波长噪声扫描激光源的波长范围; 以及在单个波长扫描上的光学伪影的实时高速单次测量，其中激光源针对低噪声操作被优化。

公开(公告)号：US20060126073A1

公开(公告)日：2006-06-15

申请号：US11298068

申请日：2005-12-09

申请人： Thomas Farrell ,  David McDonald

发明人： Thomas Farrell ,  David McDonald

IPC分类号： G01B9/02

CPC分类号： G01B11/026 ,  G02B6/29317 ,  G02B6/29359

摘要： A displacement measuring interferometer system and method for measuring the distance between two known points is disclosed. An interferometer is configured to provide a reference reflection of a reference point and a measurement reflection of a measurement point. A tunable laser is used to scan in wavelength into the interferometer to detect interferometer characteristics to measure the distance between the reference point and the measurement point from the interferometer characteristics. The invention describes a displacement measuring interferometer which uses a scanning tunable laser to accurately map out a fringe such that significant improvement in accuracy can be achieved by use of a tunable laser to scan the wavelengths and determine the fringe.

摘要翻译： 公开了用于测量两个已知点之间的距离的位移测量干涉仪系统和方法。 干涉仪被配置为提供参考点的参考反射和测量点的测量反射。 使用可调谐激光器将波长扫描到干涉仪中以检测干涉仪特性，以从干涉仪特性测量参考点和测量点之间的距离。 本发明描述了一种位移测量干涉仪，其使用扫描可调谐激光器来精确地绘出边缘，使得可以通过使用可调谐激光器来扫描波长并确定边缘来实现精确度的显着改善。

公开(公告)号：US20060129344A1

公开(公告)日：2006-06-15

申请号：US10533349

申请日：2003-10-30

申请人： Thomas Farrell ,  David McDonald ,  Thomas Mullane

发明人： Thomas Farrell ,  David McDonald ,  Thomas Mullane

IPC分类号： H01S3/00

CPC分类号： H01S5/0014 ,  H01S5/0021 ,  H01S5/0617 ,  H01S5/06256 ,  H01S5/0683 ,  H01S5/1209

摘要： The invention provides a method to compensate for degradation in a tunable laser and ensure its performance by tracking the degradation and adjusting the control information accordingly. This is accomplished by performing some measurements of the output of the tunable laser at an initial setup or calibration procedure. Then, by effecting a periodic repetition of these measurements and using a comparison between these two measurements the present invention provides for a compensation factor for the operating conditions, primarily in the form of a look up table of operating points of the laser. These measurements show how much the operating points of the laser have drifted over the period since the last set of measurements, which provide control information to compensate for degradation in the laser.

摘要翻译： 本发明提供了一种补偿可调激光器的劣化并通过跟踪劣化并相应地调整控制信息来确保其性能的方法。 这是通过在初始设置或校准过程中对可调谐激光器的输出进行一些测量来实现的。 然后，通过进行这些测量的周期性重复并且使用这两个测量之间的比较，本发明主要以激光的操作点的查找表的形式提供了操作条件的补偿因子。 这些测量显示了自上一组测量以来，激光器的工作点已经漂移了多少时间，这提供了控制信息来补偿激光器的退化。