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1. 发明申请

US20050202793A1 Method and system for superheterodyne detection of an optical input signal 失效
标题翻译：光输入信号的超外差检测方法和系统
公开(公告)号：US20050202793A1
公开(公告)日：2005-09-15
申请号：US10800073
申请日：2004-03-11
申请人： Douglas Baney , Tun Tan , Bogdan Szafraniec
发明人： Douglas Baney , Tun Tan , Bogdan Szafraniec
IPC分类号： G02F1/35 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/148 , H04B10/152 , H04B10/18 , H04J14/00 , H04J14/02 , H04B1/18 , G01B9/02
CPC分类号： H04B10/64 , H04B10/60
摘要： A system and method for superheterodyne detection in accordance with the invention. The system comprises a first conversion unit for performing a first heterodyne operation on an optical input signal to generate an electrical IF signal. A second conversion unit is electrically or optically coupled to the first conversion unit. The second conversion unit performs a second heterodyne operation to generate an electrical output signal suitable for signal processing.
摘要翻译：根据本发明的用于超外差检测的系统和方法。该系统包括用于对光输入信号执行第一外差操作以产生电IF信号的第一转换单元。第二转换单元电或光耦合到第一转换单元。第二转换单元执行第二外差操作以产生适于信号处理的电输出信号。

2. 发明申请

US20090141274A1 Polarization Dependent Loss Analyzer 审中-公开
标题翻译：极化相关损耗分析仪
公开(公告)号：US20090141274A1
公开(公告)日：2009-06-04
申请号：US11947745
申请日：2007-11-29
申请人： Bogdan Szafraniec , Evan Paul Thrush , Calivin Bruce Ward
发明人： Bogdan Szafraniec , Evan Paul Thrush , Calivin Bruce Ward
IPC分类号： G01J4/00
CPC分类号： G01M11/337
摘要： A polarization dependent loss measuring device and the method of using the same are disclosed. The device includes a light source, a sensor, and a controller. The light source generates a polarization modulated light signal, and is adapted to apply the polarization modulated light signal to a device under test. The sensor generates an electrical output signal representing an intensity of an output light signal leaving the device under test as a function of time. The controller measures an amplitude and phase of the electrical output signal at a first frequency and generates an output indicative of a polarization dependent loss in the device under test.
摘要翻译：公开了偏振相关损耗测量装置及其使用方法。该装置包括光源，传感器和控制器。光源产生偏振调制光信号，并且适于将偏振调制光信号应用于被测器件。该传感器产生表示作为时间的函数离开被测器件的输出光信号的强度的电输出信号。控制器以第一频率测量电输出信号的幅度和相位，并产生指示被测器件中偏振相关损耗的输出。

3. 发明申请

US20080297768A1 Polarization Mode Dispersion Analyzer 审中-公开
标题翻译：极化模式色散分析仪
公开(公告)号：US20080297768A1
公开(公告)日：2008-12-04
申请号：US11756942
申请日：2007-06-01
申请人： Bogdan Szafraniec , Calvin Bruce Ward
发明人： Bogdan Szafraniec , Calvin Bruce Ward
IPC分类号： G01N21/00
CPC分类号： G01M11/336
摘要： A polarization mode dispersion analyzer having a light source, a sensor, an output phase signal analyzer, and a controller. The light source generates a probe light signal that is intensity modulated and also polarization modulated, the light source being adapted to apply the light signal to a device under test. The sensor generates an output phase signal related to the phase of the intensity modulation of an output optical signal leaving the device under test. The output phase signal analyzer measures an amplitude and phase of at least one frequency component of the output phase signal at a frequency related to the polarization modulation. The controller generates a signal indicative of a differential group delay of the device under test utilizing the measured amplitude and phase. The controller also measures a group delay associated with the device under test.
摘要翻译：具有光源，传感器，输出相位信号分析器和控制器的偏振模色散分析仪。光源产生强度调制并且也被偏振调制的探测光信号，光源适于将光信号施加到被测器件。传感器产生与离开被测器件的输出光信号的强度调制相位相关的输出相位信号。输出相位信号分析器以与偏振调制相关的频率测量输出相位信号的至少一个频率分量的振幅和相位。控制器利用测量的幅度和相位产生指示被测器件的差分组延迟的信号。控制器还测量与被测设备相关的组延迟。

4. 发明申请

US20080100847A1 Heterodyne Photonic Dispersion and Loss Analyzer 审中-公开
标题翻译： Heterodyne光子色散和损耗分析仪
公开(公告)号：US20080100847A1
公开(公告)日：2008-05-01
申请号：US11553422
申请日：2006-10-26
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： G01B9/02
CPC分类号： G01B9/0201 , G01B9/02004 , G01B9/02081 , G01B2290/70
摘要： A method and apparatus for determining the optical parameters of a device under test (DUT) is disclosed. A first portion of an optical signal is modulated to generate a first modulated signal. The first modulated signal is applied to the DUT to output a test signal. A second portion of the optical signal is modulated to create a reference signal. The test signal and reference signal are optically combined into a combined signal. An electrical signal generated from the combined signal is processed to determine at least one optical parameter of the DUT. Processing the electrical signal includes demodulating the electrical signal.
摘要翻译：公开了一种用于确定待测器件（DUT）的光学参数的方法和装置。光信号的第一部分被调制以产生第一调制信号。将第一调制信号施加到DUT以输出测试信号。光信号的第二部分被调制以产生参考信号。测试信号和参考信号被光学地组合成组合信号。从组合信号产生的电信号被处理以确定DUT的至少一个光学参数。处理电信号包括解调电信号。

5. 发明申请

US20050012934A1 Optical analyzer and method for measuring spectral amplitude and phase of input optical signals using heterodyne architecture 失效
标题翻译：光学分析仪和使用外差架构测量输入光信号的光谱幅度和相位的方法
公开(公告)号：US20050012934A1
公开(公告)日：2005-01-20
申请号：US10623403
申请日：2003-07-18
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： G01J9/00 , G01J9/04 , H04B10/02 , H04B10/08 , G01B9/02
CPC分类号： G01J9/04 , H04B10/0795
摘要： An optical analyzer and method for measuring optical properties of optical signals utilizes a heterodyne architecture to measure spectral amplitude and phase of a periodically modulated input optical signal, such as an optical signal from a periodically modulated distributed feedback (DFB) laser. The spectral amplitude and phase measurements are derived from a heterodyne signal, which is produced by combining and mixing the input optical signal and a local oscillator (LO) signal. The optical spectrum that is reconstructed from the heterodyne signal includes “inner” spectral peaks that contain phase information of the input optical signal. The inner spectral peaks may be produced by an optical or electrical mixing technique. The spectral phase of the input optical signal is recovered from the inner spectral peaks of the reconstructed optical spectrum.
摘要翻译：用于测量光信号的光学特性的光学分析仪和方法利用外差架构来测量周期性调制的输入光信号（例如来自周期性调制分布反馈（DFB）激光器的光信号）的频谱幅度和相位。通过组合和混合输入光信号和本地振荡器（LO）信号产生的外差信号导出频谱幅度和相位测量。从外差信号重构的光谱包括包含输入光信号的相位信息的“内”谱峰。内部光谱峰可以通过光学或电气混合技术产生。从重构光谱的内部光谱峰恢复输入光信号的光谱相位。

6. 发明授权

US06590666B2 Method and system for optical spectrum analysis with non-uniform sweep rate correction 失效
公开(公告)号：US06590666B2
公开(公告)日：2003-07-08
申请号：US09854070
申请日：2001-05-11
申请人： Douglas M. Baney , Bogdan Szafraniec
发明人： Douglas M. Baney , Bogdan Szafraniec
IPC分类号： G01B902
CPC分类号： G01J9/04 , G01J3/453
摘要： Heterodyne-based optical spectrum analysis involves measuring the sweep rate of a swept local oscillator signal and then generating an output signal that accounts for non-uniformities in the sweep rate of the swept local oscillator signal. In an embodiment, an input signal is combined with a swept local oscillator signal in an optical coupler and the sweep rate of the swept local oscillator signal is measured in a relative frequency measurement system. The combined optical signal is output from the optical coupler to a receiver and a heterodyne beat signal is generated. The heterodyne beat signal and measured local oscillator frequency sweep rate information are utilized by a signal processor to generate an output signal that is indicative of an optical parameter of the input signal and that accounts for non-uniformities in the sweep rate of the local oscillator signal. Because the actual sweep rate of the swept local oscillator signal is measured during analysis of the input signal, the horizontal scale accuracy of heterodyne-based OSAs is improved.

7. 发明申请

US20100196008A1 METHODS AND APPARATUS FOR RECOVERING FIRST AND SECOND TRANSMITTED OPTICAL WAVES FROM A POLARIZATION MULTIPLEXED OPTICAL WAVE 有权
标题翻译：用于从偏振多波长光波恢复第一和第二透射光波的方法和装置
公开(公告)号：US20100196008A1
公开(公告)日：2010-08-05
申请号：US12363521
申请日：2009-01-30
申请人： Bogdan Szafraniec , Bernd Nebendahl
发明人： Bogdan Szafraniec , Bernd Nebendahl
IPC分类号： H04J14/06 , H04B10/00
CPC分类号： H04J14/06 , H04B10/2569 , H04B10/671 , H04B10/697
摘要： First and second transmitted optical waves having orthogonal polarization states are combined in a polarization multiplexed optical wave. At an optical receiver, an electrical field of the polarization multiplexed optical wave is measured. A plurality of polarization states of the polarization multiplexed optical wave is determined from the measured electrical field. From the plurality of polarization states, a transform that aligns the orthogonal polarization states of the first and second transmitted optical waves with respect to principal axes of the optical receiver is estimated. The first and second transmitted optical waves are recovered by applying the transform to one of i) the polarization multiplexed optical wave and ii) the measured electrical field of the polarization multiplexed optical wave.
摘要翻译：具有正交偏振状态的第一和第二透射光波在偏振复用光波中组合。在光接收机中，测量偏振复用光波的电场。从测量的电场确定偏振复用光波的多个极化状态。从多个极化状态，估算出相对于光接收机的主轴对准第一和第二透射光波的正交极化状态的变换。通过将变换应用于i）偏振多路复用光波和ii）测量的偏振复用光波的电场来恢复第一和第二透射光波。

8. 发明授权

US07162165B2 Kalman filter assembly intensity noise subtraction for optical heterodyne receivers 失效
标题翻译：卡尔曼滤波器组合强度噪声减去光学外差接收机
公开(公告)号：US07162165B2
公开(公告)日：2007-01-09
申请号：US10212495
申请日：2002-08-02
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： H04B10/06
CPC分类号： H04B10/60 , H04B10/64
摘要： A Kalman filter is used to estimate the coefficients of an FIR filter to optimize the noise subtraction in a balanced optical heterodyne receiver and related receiver configurations. The Kalman filter is used both statically and dynamically.
摘要翻译：卡尔曼滤波器用于估计FIR滤波器的系数，以优化平衡光外差接收机和相关接收机配置中的噪声减除。卡尔曼滤波器既静态又动态地使用。

9. 发明授权

US07075659B2 Heterodyne optical network analysis that utilizes signal modulation 失效
标题翻译：利用信号调制的异步光网络分析
公开(公告)号：US07075659B2
公开(公告)日：2006-07-11
申请号：US10772808
申请日：2004-02-05
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： G01B9/02 , G01N21/00
CPC分类号： G01M11/337 , G01M11/331 , G01M11/333 , G01M11/336
摘要： The group delay of a DUT is measured by modulating test and reference portions of a local oscillator signal at different frequencies to create modulation sidebands, applying the modulated test portion of the local oscillator signal to the DUT, and then optically mixing the two modulated signals. Optically mixing the two modulated signals translates the optical frequencies down to electrical frequencies. Phase changes that are caused by the DUT are determined by measuring the phase differences between modulation sidebands of the test portion of the local oscillator signal. Frequency translation can be achieved by electrical mixing instead of optical mixing.
摘要翻译： DUT的组延迟通过调制不同频率的本地振荡器信号的测试和参考部分来测量，以产生调制边带，将本地振荡器信号的调制测试部分应用于DUT，然后光混合两个调制信号。将两个调制信号进行光学混合将光频率转换为电频率。由DUT引起的相位变化通过测量本地振荡器信号的测试部分的调制边带之间的相位差来确定。频率转换可以通过电气混合而不是光学混合来实现。

10. 发明授权

US06766115B1 Multiport optical component testing using a single optical receiver 失效
标题翻译：使用单个光接收机进行多端口光学元件测试
公开(公告)号：US06766115B1
公开(公告)日：2004-07-20
申请号：US09643374
申请日：2000-08-22
申请人： Wayne V. Sorin , Douglas M. Baney , Bogdan Szafraniec
发明人： Wayne V. Sorin , Douglas M. Baney , Bogdan Szafraniec
IPC分类号： H04B1000
CPC分类号： H04B10/00
摘要： A system for measuring optical characteristics of a multiport optical device uses optical heterodyne detection and known port-specific transmission delays to simultaneously monitor multiple ports of the multiport optical device with a single receiver. An embodiment of a system includes a splitter configured to split a swept optical signal into a reference signal and a test signal and a test system input, connectable to the multiport optical device, for transmitting the test signal to the multiport optical device. The test system also includes an optical combiner and a receiver. The optical combiner is connectable to the multiport optical device to receive a first portion of the test signal having a first port-specific transmission delay and to receive a second portion of the test signal having a second port-specific transmission delay. The optical combiner combines the first portion of the test signal having the first transmission delay and the second portion of the test signal having the second transmission delay with the reference signal. The receiver is connected to the optical combiner to detect a first optical heterodyne signal that is generated from the combined first portion of the test signal and the reference signal and to detect a second optical heterodyne signal that is generated from the combined second portion of the test signal and the reference signal. The system includes port-specific transmission delay units connected to ports of the multiport device and each of the port-specific transmission delay units imparts a different transmission delay on an optical signal.
摘要翻译：用于测量多端口光学器件的光学特性的系统使用光学外差检测和已知的端口特定传输延迟来同时用单个接收器监视多端口光学器件的多个端口。系统的实施例包括分配器，其被配置为将扫描光信号分割为参考信号，以及可连接到多端口光学设备的测试信号和测试系统输入，用于将测试信号发送到多端口光学设备。测试系统还包括光学组合器和接收器。光合并器可连接到多端口光学设备以接收具有第一端口特定传输延迟的测试信号的第一部分，并且接收具有第二端口特定传输延迟的测试信号的第二部分。光组合器将具有第一传输延迟的测试信号的第一部分和具有第二传输延迟的测试信号的第二部分与参考信号组合。接收机连接到光组合器以检测从测试信号和参考信号的组合的第一部分产生的第一光学外差信号，并且检测从测试的组合的第二部分产生的第二光学外差信号信号和参考信号。该系统包括连接到多端口设备的端口的端口特定传输延迟单元，并且每个端口专用传输延迟单元在光信号上施加不同的传输延迟。

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