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71. 发明授权

US07564390B2 Optical digital to analog converter 有权
标题翻译：光学数模转换器
公开(公告)号：US07564390B2
公开(公告)日：2009-07-21
申请号：US11779710
申请日：2007-07-18
申请人： Gary A. Frazier , Roger K. Lake
发明人： Gary A. Frazier , Roger K. Lake
IPC分类号： H03M1/66
CPC分类号： G02F7/00 , G02F2001/01775
摘要： According to one embodiment of the invention, a digital to analog converter for converting a digital signal to an analog optical signal includes a light source and a plurality optical switches. Each optical switch is responsive to a respective one of a plurality of bits of a digital signal to selectively allow transmission of light from the light source through the switch. The digital to analog converter also includes a light combination system operable to combine the light passed through each of the switches and produce an analog optical signal indicative of the digital signal.
摘要翻译：根据本发明的一个实施例，用于将数字信号转换为模拟光信号的数模转换器包括光源和多个光开关。每个光开关响应于数字信号的多个位中的相应一个，以选择性地允许来自光源的光通过开关传输。该数模转换器还包括一个光组合系统，可操作以组合通过每个开关的光，并产生指示数字信号的模拟光信号。

72. 发明申请

US20080129564A1 Optical Signal Processing Device For A/D Converter Including Optical Encoders With Nonlinear Loop Mirrors 失效
标题翻译：包含带有非线性环路镜的光学编码器的A / D转换器的光信号处理装置
公开(公告)号：US20080129564A1
公开(公告)日：2008-06-05
申请号：US10579630
申请日：2004-11-16
申请人： Ken-ichi Kitayama , Kensuke Ikeda , Mohammad Abdul Jalil , Shu Namiki , Takashi Inoue
发明人： Ken-ichi Kitayama , Kensuke Ikeda , Mohammad Abdul Jalil , Shu Namiki , Takashi Inoue
IPC分类号： H03M1/62 , G02F1/365
CPC分类号： H04B10/299 , G02F1/3519 , G02F3/00 , G02F7/00 , G02F2002/006
摘要： An optically sampling device optically samples an optical analog signal using a sampled signal having a predetermined sampling frequency, and outputs control light having a pulse train of an optically sampled optical analog signal. A signal generating device generates a pulse train of signal light which is synchronized with the sampled signal. An optical encoding device optically encodes the pulse train of the signal light according to the control light, by using optical encoders each including nonlinear optical loop mirrors, and outputs pulse trains of optically encoded signal light from said optical encoders, respectively. An optically quantizing device performs optical threshold processing on the pulse trains of optically-encoded signal light to optically quantize them, by using at least one of optical threshold processors each of which is connected to each of said optical encoders and includes a nonlinear optical device, and outputs optically quantized pulse trains as optical digital signals.
摘要翻译：光采样装置使用具有预定采样频率的采样信号对光模拟信号进行光学采样，并输出具有光采样光模拟信号的脉冲串的控制光。信号发生装置产生与采样信号同步的信号光脉冲串。光编码装置通过使用各自包括非线性光环路镜的光编码器，根据控制光对信号光的脉冲序列进行光学编码，并分别输出来自所述光编码器的光编码信号光的脉冲序列。光学量化装置对光编码信号光的脉冲序列进行光阈值处理，以光学量化它们，通过使用光阈值处理器中的至少一个连接到每个所述光编码器，并且包括非线性光学装置，并输出光量化的脉冲串作为光数字信号。

73. 发明授权

US07376349B2 Analog to digital converter systems and methods 有权
标题翻译：模数转换器系统和方法
公开(公告)号：US07376349B2
公开(公告)日：2008-05-20
申请号：US10820472
申请日：2004-04-07
申请人： Stanislav I. Ionov , Thomas W. Ball , Peter Chu , William S. Hoult, Jr.
发明人： Stanislav I. Ionov , Thomas W. Ball , Peter Chu , William S. Hoult, Jr.
IPC分类号： H04J14/00 , H04J4/00 , H03M1/00 , H03M1/60
CPC分类号： G02F7/00
摘要： Systems and methods are disclosed herein to provide analog-to-digital converter techniques. For example, in accordance with an embodiment of the present invention, an analog-to-digital converter architecture is disclosed that utilizes optical techniques to convert an analog electrical signal to a digital electrical signal.
摘要翻译：本文公开了提供模数转换器技术的系统和方法。例如，根据本发明的实施例，公开了利用光学技术将模拟电信号转换为数字电信号的模数转换器架构。

74. 发明申请

US20050226635A1 Analog to digital converter systems and methods 有权
标题翻译：模数转换器系统和方法
公开(公告)号：US20050226635A1
公开(公告)日：2005-10-13
申请号：US10820472
申请日：2004-04-07
申请人： Stanislav Ionov , Thomas Ball , Peter Chu , William Hoult
发明人： Stanislav Ionov , Thomas Ball , Peter Chu , William Hoult
IPC分类号： G02F7/00 , H04B10/00
CPC分类号： G02F7/00
摘要： Systems and methods are disclosed herein to provide analog-to-digital converter techniques. For example, in accordance with an embodiment of the present invention, an analog-to-digital converter architecture is disclosed that utilizes optical techniques to convert an analog electrical signal to a digital electrical signal.
摘要翻译：本文公开了提供模数转换器技术的系统和方法。例如，根据本发明的实施例，公开了利用光学技术将模拟电信号转换为数字电信号的模数转换器架构。

75. 发明授权

US06771201B1 Hybrid photonic analog to digital converter using superconducting electronics 失效
标题翻译：使用超导电子学的混合光子模数转换器
公开(公告)号：US06771201B1
公开(公告)日：2004-08-03
申请号：US10350189
申请日：2003-01-24
申请人： Marc Currie
发明人： Marc Currie
IPC分类号： H03M112
CPC分类号： H03M1/12 , G02F7/00
摘要： This invention discloses a hybrid photonic analog-to-digital converter using superconducting electronics to achieve a high-speeds. This scheme differs from most current designs by combining two systems, photonic and superconducting, to utilize each system for optimal performance. The photonic system performs the optical sampling of the signal with very low aperture and jitter errors. This optically sampled data is then converted to an electronic signal via an optoelectronic switch and quantized in the superconducting system. The high-speed (>100 GHz) superconducting electronic system transforms the quantized signal into a binary output. This invention allows for analog-to-digital conversion at much higher speeds than available with current electronic analog-to-digital converters.
摘要翻译：本发明公开了一种使用超导电子学实现高速的混合光子模数转换器。该方案不同于大多数当前的设计，通过组合两个系统，光子和超导，以利用每个系统的最佳性能。光子系统执行具有非常低的孔径和抖动误差的信号的光学采样。然后将该光采样数据经由光电开关转换成电子信号，并在超导系统中量化。高速（> 100 GHz）超导电子系统将量化信号转换为二进制输出。本发明允许以比当前电子模数转换器可用的更高的速度进行模数转换。

76. 发明授权

US06700517B1 Photonic analog-to-digital converter 有权
标题翻译：光子模数转换器
公开(公告)号：US06700517B1
公开(公告)日：2004-03-02
申请号：US10326963
申请日：2002-12-24
申请人： Kevin K. Kellar
发明人： Kevin K. Kellar
IPC分类号： H03M100
CPC分类号： H03M1/361 , G02F7/00
摘要： A method of photonic analog-to-digital conversion including the steps of using an analog signal to modulate a laser, splitting the modulated optical output into 2N paths, attenuating the different paths along a gradient, then splitting each path again and recombining with an adjacent path in such a way that only one path has significant energy. An implementation architecture is also provided which includes a laser source, a modulator for modulating the laser source in accordance with an analog input signal, a first splitter section for splitting the modulated optical output into 2N paths, and for attenuating the different paths along a gradient, an interferometer section for splitting each path again and for recombining the signals in such a way that only one path has significant energy, and a decoder section for outputting a digital word corresponding to the analog input signal.
摘要翻译：一种光子模数转换方法，包括以下步骤：使用模拟信号调制激光，将调制的光输出分解为2 N路径，沿梯度衰减不同的路径，然后再分割每个路径并重新组合具有相邻路径，使得仅一条路径具有显着的能量。还提供了一种实现架构，其包括激光源，根据模拟输入信号调制激光源的调制器，用于将调制光输出分解为2 N路径的第一分离器部分，以及用于衰减不同路径沿着梯度的干涉仪部分，用于再次分离每个路径，并且以这样的方式使信号重新组合，使得只有一个路径具有显着的能量;以及解码器部分，用于输出对应于模拟输入信号的数字字。

77. 发明授权

US06469649B1 Narrowband analog to digital converter with suppressed second-order distortion 失效
标题翻译：具有抑制二阶失真的窄带模数转换器
公开(公告)号：US06469649B1
公开(公告)日：2002-10-22
申请号：US09520912
申请日：2000-03-08
申请人： Roger Helkey , Jonathan Twichell
发明人： Roger Helkey , Jonathan Twichell
IPC分类号： H03M112
CPC分类号： H03M1/1245 , G02F7/00
摘要： An apparatus for digitizing an analog electrical signal comprises a linearized sampler having an analog electrical input and a sampling input, a bandpass filter having a center frequency of at least half of the quantization rate of a quantizer in communication with the sampler, and the quantizer in communication with the bandpass filter. The linearized sampler in one embodiment is a linearized optical modulator with an optical input. The sampler frequency in another embodiment is chosen such that second-order distortion products generated in the sampler are separated in frequency from the sampled input band.
摘要翻译：一种用于数字化模拟电信号的装置包括具有模拟电输入和采样输入的线性化采样器，具有与采样器通信的量化器的量化速率的至少一半的中心频率的带通滤波器，以及量化器与带通滤波器通信。一个实施例中的线性化采样器是具有光输入的线性化光调制器。选择另一实施例中的采样器频率使得在采样器中产生的二阶失真产物在频率上与采样的输入频带分离。

78. 发明授权

US6064325A Frequency modulation-based folding optical analog-to-digital converter 失效
标题翻译：基于频率调制的折叠光学模数转换器
公开(公告)号：US6064325A
公开(公告)日：2000-05-16
申请号：US133037
申请日：1998-08-11
申请人： Richard A. Fields , David L. Rollins , Stephen R. Perkins , Eric L. Upton , Elizabeth T. Kunkee , Lawrence J. Lembo , Juan C. Carillo, Jr. , Mark Kintis
发明人： Richard A. Fields , David L. Rollins , Stephen R. Perkins , Eric L. Upton , Elizabeth T. Kunkee , Lawrence J. Lembo , Juan C. Carillo, Jr. , Mark Kintis
IPC分类号： G02F7/00 , H03M1/00
CPC分类号： G02F7/00
摘要： A frequency modulation-based optical analog-to-digital converter utilizes a downward-folding, successive approximation approach. A series of stages is utilized to generate bits in the digital signal. In each stage, complementary low and high bandpass filters collectively cover a bandpass frequency range from a low frequency to a high frequency. The high frequency filtered signal from the high bandpass filter is observed to obtain a bit in the digital word. By performing the folding operations in the frequency domain, the converter avoids the difficult task of optical power subtraction, relying instead on frequency down-conversions. The high frequency filtered signal passed by the high bandpass filter is then downconverted and added to the low pass filter signal to generate a modulated signal for the next stage.
摘要翻译：基于频率调制的光学模数转换器利用向下折叠的逐次近似方法。利用一系列级来产生数字信号中的位。在每个阶段，互补的低和高带通滤波器共同覆盖从低频到高频的带通频率范围。观察到来自高带通滤波器的高频滤波信号以获得数字字中的位。通过在频域执行折叠操作，转换器避免了光功率减法的困难任务，而是依靠降频转换。然后，由高带通滤波器通过的高频滤波信号被下变频并加到低通滤波器信号中，以生成下一级的调制信号。

79. 发明授权

US5629699A Analogue-to-digital converter and analogue-to-digital conversion system embodying said converter 失效
标题翻译：实现所述转换器的模数转换器和模数转换系统
公开(公告)号：US5629699A
公开(公告)日：1997-05-13
申请号：US499957
申请日：1995-07-10
申请人： Jean Chazelas , Guy Le Parquier , Fran.cedilla.ois Renault
发明人： Jean Chazelas , Guy Le Parquier , Fran.cedilla.ois Renault
IPC分类号： G01J9/02 , G02F7/00 , H03M1/12 , H03M1/64 , H03M7/00 , H03M1/00
CPC分类号： H03M1/64 , G02F7/00
摘要： An N-bit analogue-to-digital converter can increase the resolution by 3 bits, by very precise coding of the differential phase at the output of the electro-optic phase modulator controlled by the electric signal to be converted. The optical signals obtained are processed by an electro-optic device that outputs electric signals that are functions of the sine and cosine of the phase. A coding device uses the symmetry of the trigonometric circle partitioned into four consecutive sectors between 0 and 27.pi. in order to convert the absolute values of the electric signals obtained on (N-3) bits, independently of the home sector of the phase. A transcoding device uses the value of the sine and cosine coded on (N-3) bits, to output a value V of the electric signal, on N bits, as a function of the home sector. The conversion system according to the invention comprises a first N-bit analogue-to-digital converter doing a very precise but ambiguous conversion of the electric signal, and a second analogue-to-digital converter to eliminate the ambiguity.
摘要翻译：通过对由要转换的电信号控制的电光相位调制器的输出进行非常精确的差分相位编码，N位模数转换器可以将分辨率提高3位。所获得的光信号由输出作为相位的正弦和余弦函数的电信号的电光装置处理。编码装置使用分割成0和27π之间的四个连续扇区的三角圆的对称性，以便独立于相位的归属扇区来转换在（N-3）位上获得的电信号的绝对值。代码转换装置使用在（N-3）比特上编码的正弦和余弦值作为家庭扇区的函数在N比特上输出电信号的值V. 根据本发明的转换系统包括对电信号进行非常精确但模糊的转换的第一N位模数转换器，以及用于消除模糊度的第二模数转换器。

80. 发明授权

US5137359A Digital phase modulator for fiber optic sagnac interferometer 失效
标题翻译：用于光纤锯齿干涉仪的数字相位调制器
公开(公告)号：US5137359A
公开(公告)日：1992-08-11
申请号：US670956
申请日：1991-03-18
申请人： James R. Steele
发明人： James R. Steele
IPC分类号： G01C19/72 , G02F7/00
CPC分类号： G01C19/721 , G01C19/726 , G02F7/00
摘要： A phase modulator for use in a circuit for measuring the output of a fiber optic gyroscope. The phase modulator is adapted to receive the digital word generated by such a circuit that comprises phase shift information. The digital word includes both the feedback Serrodyne ramp and the phase modulation conventionally generated for shifting the operating point of the gyroscope to enhance the sensitivity of output beam intensity to phase difference. The modulator employs a plurality of electrode elements with the lengths of adjacent segments having a power-of-two relationship. As a result, the digital word may be directly received by the phase modulator without prior conversion to an analog signal.
摘要翻译：一种用于测量光纤陀螺仪输出的电路中的相位调制器。相位调制器适于接收由包括相移信息的这种电路产生的数字字。数字字包括反馈Serrodyne斜坡和通常产生的用于移动陀螺仪的工作点的相位调制，以增强输出光束强度对相位差的灵敏度。调制器采用多个电极元件，其相邻段的长度具有二倍的关系。结果，数字字可以由相位调制器直接接收，而无需先前转换为模拟信号。

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