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31. 发明申请

US20060120483A1 Heterodyne-based optical spectrum analysis using data clock sampling 审中-公开
标题翻译：基于异步的光谱分析采用数据采样
公开(公告)号：US20060120483A1
公开(公告)日：2006-06-08
申请号：US11007500
申请日：2004-12-07
申请人： William McAlexander , Bogdan Szafraniec
发明人： William McAlexander , Bogdan Szafraniec
IPC分类号： H04L27/22
CPC分类号： G01J9/04
摘要： A complex spectrum related to a carrier signal that is modulated with random data is measured as a function of the data clock so that the randomness that is contributed by the modulation of random data can be ignored. In one embodiment, the complex spectrum that is expressed in terms of both spectral amplitude and spectral phase is sampled only at the carrier frequency and at the frequencies that are away from the carrier signal by integral multiples of the clock frequency. This sampling approach reduces the complex spectrum to only those data points that are needed to characterize the average pulse shape of the modulated carrier signal.
摘要翻译：测量与随机数据调制的载波信号相关的复谱作为数据时钟的函数，从而可以忽略由随机数据的调制贡献的随机性。在一个实施例中，以频谱幅度和频谱相位表示的复谱仅在时钟频率的整数倍的载波频率和远离载波信号的频率上进行采样。该采样方法将复谱减少到只需要表征调制载波信号的平均脉冲形状的那些数据点。

32. 发明授权

US06813027B2 Time difference synchronization for determination of a property of an optical device 失效
标题翻译：用于确定光学装置的特性的时差同步
公开(公告)号：US06813027B2
公开(公告)日：2004-11-02
申请号：US10046521
申请日：2002-01-14
申请人： Bogdan Szafraniec , Ali Motamedi , Greg Douglas Van Wiggeren
发明人： Bogdan Szafraniec , Ali Motamedi , Greg Douglas Van Wiggeren
IPC分类号： G01B902
CPC分类号： G01M11/3172
摘要： The present invention relates to determination of a property of an optical device under test, e.g. the group-delay of the optical device under test, by: tuning an optical frequency &lgr; of an optical beam, deriving a dependency of the optical frequency &lgr; of the optical beam over a first time period t, deriving a dependency of the optical property of the device under test over a second time period t+&Dgr;t, synchronizing the time dependency of the optical frequency &lgr; of the optical beam with the time dependency of the optical property of the device under test, and deriving the frequency dependency of the optical property of the device under test from the synchronized time dependencies.
摘要翻译：本发明涉及对被测光学器件的性质的确定。通过以下方式调谐光学器件的组延迟：通过调谐光束的光频率λ，得出在第一时间段t内光束的光频率λ的依赖性，导出光学特性的依赖性在第二时间段t + Deltat的待测设备，使光束的光频率λ的时间依赖性与被测器件的光学特性的时间依赖性相同，并且导出光学特性的频率依赖性被测设备的同步时间依赖性。

33. 发明授权

US06486958B1 Method and system for optical spectrum analysis with matched filter detection 失效
标题翻译：用匹配滤波器检测的光谱分析方法和系统
公开(公告)号：US06486958B1
公开(公告)日：2002-11-26
申请号：US09841393
申请日：2001-04-24
申请人： Bogdan Szafraniec , Douglas M. Baney
发明人： Bogdan Szafraniec , Douglas M. Baney
IPC分类号： G01B902
CPC分类号： H04B10/07 , G01J9/04 , H04B10/60 , H04B10/64
摘要： Heterodyne-based optical spectrum analysis involves filtering a heterodyne beat signal with at least one matched filter in order to improve the signal-to-noise ratio and the spectral resolution of the heterodyne-based optical spectrum analysis. In an embodiment, an input signal is combined with a swept local oscillator signal in an optical coupler. The combined optical signal is output to a receiver and a heterodyne beat signal is detected. The heterodyne beat signal is filtered by a matched filter unit and the filtered heterodyne beat signal is utilized to generate an output signal that is indicative of an optical parameter of the input signal. By utilizing the quadratic phase behavior of the heterodyne beat signal in signal processing, the resolution of a heterodyne-based OSA can be substantially improved over known heterodyne-based OSAs.
摘要翻译：基于异步的光谱分析涉及用至少一个匹配滤波器对外差拍频信号进行滤波，以便提高基于外差的光谱分析的信噪比和频谱分辨率。在一个实施例中，输入信号与光耦合器中的扫频本地振荡器信号组合。将组合的光信号输出到接收机，并检测外差拍频信号。外差搏动信号被匹配的滤波器单元滤波，并且滤波后的外差搏动信号用于产生指示输入信号的光学参数的输出信号。通过利用信号处理中的外差拍频信号的二次相位行为，基于外差的OSA可以显着改进基于外差的OSA的分辨率。

34. 发明授权

US5602642A Magnetically insensitive fiber optic rotation sensor 失效
标题翻译：磁性不敏感的光纤旋转传感器
公开(公告)号：US5602642A
公开(公告)日：1997-02-11
申请号：US484800
申请日：1995-06-07
申请人： Ralph A. Bergh , Bogdan Szafraniec
发明人： Ralph A. Bergh , Bogdan Szafraniec
IPC分类号： G01C19/72
CPC分类号： G01C19/721
摘要： A fiber optic gyroscope having at least one forty-five degree splice connected to a polarization maintaining sensing coil. The splice is an alignment of forty-five or so degrees between a major axis of a state of polarization of light or an axis of birefringence at a port of a splitter/combiner, which may be an IOC or a coupler, and an axis of birefringence at an end of a fiber of a fiber optic coil loop. The gyroscope is rendered significantly more insensitive to ambient magnetic fields which cause non-rotation errors in the gyroscope's indication of rotation of its sensing loop or coil. The polarization amplitude errors of the present depolarized gyroscope are no greater than those of a similar but non-depolarized gyroscope. The present gyroscope may use an integrated optic circuit or an optical fiber coupler for splitting the light into two beams that counterpropagate in the sensing coil, for combining the beams when they exit the sensing coil. Two forty-five degree splices are placed at each end of the coil thereby resulting in depolarized light beams in the coil. The gyroscope may be either an open loop or a closed loop configuration.
摘要翻译：具有连接到偏振保持感测线圈的至少四十五度接头的光纤陀螺仪。接合是在分光器/组合器的端口（可以是IOC或耦合器）的光的偏振态的长轴或双折射轴之间的四十五度的对准，以及在光纤线圈环的纤维端部的双折射。陀螺仪对环境磁场显着更敏感，这导致陀螺仪对其感测回路或线圈旋转指示的非旋转误差。目前去极化陀螺仪的极化振幅误差不大于类似但非去极化陀螺仪的极化振幅误差。本陀螺仪可以使用集成光学电路或光纤耦合器将光分成在感测线圈中相反传播的两个光束，用于当光束离开感测线圈时组合。在线圈的每个端部放置两个45度接头，从而在线圈中产生去极化的光束。陀螺仪可以是开环或闭环配置。

35. 发明授权

US08290375B2 Modulation based optical spectrum analyzer 有权
标题翻译：基于调制的光谱分析仪
公开(公告)号：US08290375B2
公开(公告)日：2012-10-16
申请号：US12127507
申请日：2008-05-27
申请人： Bogdan Szafraniec , Douglas M. Baney
发明人： Bogdan Szafraniec , Douglas M. Baney
IPC分类号： H04B10/04
CPC分类号： G01J3/433 , G01J3/02 , G01J3/0218 , G01J2003/1265
摘要： An optical spectrum analyzer and a method of spectrally analyzing an optical signal. The optical spectrum analyzer includes a wave shaper such as an optical modulator that shapes an optical signal, a dispersive element such as a dispersive fiber in which the shaped optical signal is dispersed, a detector that provides an output signal indicative of the dispersed shaped optical signal, and a signal processor that analyzes the output signal, for example by calculating a transform such as an inverse Fourier transform or a Fourier transform of the output signal, to provide a frequency spectrum of the optical signal.
摘要翻译：光谱分析仪和光信号的光谱分析方法。光谱分析仪包括诸如光调制器的波整形器，其形成光信号，分散元件如分散光纤，其中分布有成形光信号的检测器，提供表示分散的成形光信号的输出信号以及分析输出信号的信号处理器，例如通过计算诸如反相傅立叶变换或输出信号的傅里叶变换的变换来提供光信号的频谱。

36. 发明申请

US20060238770A1 Elementary matrix based optical signal/network analyzer 有权
标题翻译：基于矩阵的光信号/网络分析仪
公开(公告)号：US20060238770A1
公开(公告)日：2006-10-26
申请号：US11112457
申请日：2005-04-22
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： G01B9/02
CPC分类号： G01M11/337 , G01J9/04 , G01J2009/0261
摘要： A method for characterizing a device under test includes propagating multiple optical signals through the device under test and combining the multiple optical signals with a reference optical signal. The multiple optical signals are mixed with the reference optical signal and a relative perturbation between the multiple optical signals from the mixing of the multiple optical signals with the reference optical signal is determined. In another embodiment a modulated optical signal is provided from a local oscillator and the modulated optical signal is combined with the input optical signal. The modulated optical signal is mixed with the input signal to provide a mixed signal and at least one polarization-resolved parameter of the input optical signal is extracted from the mixed signal.
摘要翻译：用于表征被测器件的方法包括通过被测器件传播多个光信号，并将多个光信号与参考光信号组合。多个光信号与参考光信号混合，并且确定来自多个光信号与参考光信号的混合的多个光信号之间的相对扰动。在另一个实施例中，调制的光信号由本地振荡器提供，并且调制的光信号与输入的光信号组合。调制的光信号与输入信号混合以提供混合信号，并且从混合信号中提取输入光信号的至少一个偏振解析参数。

37. 发明授权

US07106449B2 Systems and methods for fiber optic devices with reduced thermal sensitivity 失效
标题翻译：降低热敏感度的光纤设备的系统和方法
公开(公告)号：US07106449B2
公开(公告)日：2006-09-12
申请号：US10449364
申请日：2003-05-30
申请人： Mohan Gurunathan , Richard D. Pering , Bogdan Szafraniec
发明人： Mohan Gurunathan , Richard D. Pering , Bogdan Szafraniec
IPC分类号： G01B9/02
CPC分类号： G02B6/29349 , G02B6/29398
摘要： An optical fiber device with reduced thermal sensitivity comprises a first optical fiber arm having a first composite coefficient of thermal expansion and a first length and a second optical fiber arm having a second composite coefficient of thermal expansion and a second length. A ratio of the first and second lengths inversely matches a ratio of the first and second composite coefficients of thermal expansion to minimize thermal sensitivity in the device.
摘要翻译：具有降低的热敏感性的光纤装置包括具有第一复合热膨胀系数和第一长度的第一光纤臂和具有第二复合热膨胀系数和第二长度的第二光纤臂。第一和第二长度的比率反向匹配第一和第二复合热膨胀系数的比率，以最小化装置中的热敏感度。

38. 发明授权

US07019839B2 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：US07019839B2
公开(公告)日：2006-03-28
申请号：US10623403
申请日：2003-07-18
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： 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。

39. 发明授权

US06801320B2 Method and apparatus for a Jones vector based heterodyne optical polarimeter 失效
标题翻译：用于基于琼斯矢量的外差光学偏振计的方法和装置
公开(公告)号：US06801320B2
公开(公告)日：2004-10-05
申请号：US10271048
申请日：2002-10-15
申请人： Bogdan Szafraniec
发明人： Bogdan Szafraniec
IPC分类号： G01B902
CPC分类号： G01J4/04
摘要： A heterodyne polarimeter is disclosed where a polarization state is measured by using a polarization diversity receiver employing a polarization beam splitter to output two heterodyne signals. The amplitude and relative phase of the two detected heterodyne signals uniquely determine the polarization state.
摘要翻译：公开了一种通过使用使用偏振分束器输出两个外差信号的偏振分集接收器来测量极化状态的外差偏振计。两个检测到的外差信号的振幅和相对相位唯一地确定极化状态。

40. 发明授权

US06801319B2 Symmetrical depolarized fiber optic gyroscope 有权
标题翻译：对称去极化光纤陀螺仪
公开(公告)号：US06801319B2
公开(公告)日：2004-10-05
申请号：US10038131
申请日：2002-01-03
申请人： Bogdan Szafraniec , Charles Lange , Andrew Kaliszek
发明人： Bogdan Szafraniec , Charles Lange , Andrew Kaliszek
IPC分类号： G01C1964
CPC分类号： G01C19/721
摘要： A fiber optic gyroscope (FOG) including a depolarizer having substantially equal first and second fiber segments of polarization maintaining (PM) fiber coupled to a single mode (SM) fiber loop. The first PM fiber segment includes sections of fiber connected together via a splice having an angle from about 35° to 55° between major axes of polarization of the sections which it connects. Similarly, the second PM fiber segment includes sections of fiber connected together via a splice having an angle from about 35° to 55° between major axes of polarization of the sections which it connects. The length of each fiber section is chosen to maintain the thermal and mechanical symmetry of the SM fiber loop.
摘要翻译：一种光纤陀螺仪（FOG），其包括具有与单模（SM）光纤回路耦合的基本相等的第一和第二光纤维段（PM）光纤段的去偏振器。第一PM纤维段包括通过接头连接在一起的纤维部分，所述接头在其连接的部分的主要极化轴之间具有大约35°至55°的角度。类似地，第二PM纤维段包括通过接头连接在一起的纤维部分，其在连接的部分的主要极化轴之间具有大约35°至55°的角度。选择每个纤维部分的长度以保持SM纤维环的热和机械对称性。

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