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    • 53. 发明申请
    • PSEUDO COMMON-PATH DPSK DEMODULATOR
    • PSEUDO通道DPSK DEMODULATOR
    • WO2011011194A1
    • 2011-01-27
    • PCT/US2010/041116
    • 2010-07-06
    • OPTOPLEX CORPORATIONHSIEH, Yung-ChiehAI, Chiayu
    • HSIEH, Yung-ChiehAI, Chiayu
    • G02F2/00
    • H04B10/677G02F2/00
    • A rhomb beam splitter (14), rather than a conventional cube, is used in combination with a mirror (22) reflecting both the reflected and transmitted beams to obtain a delay-line interferometer demodulator (10) with a substantially common path. This significantly reduces the sensitivity of the device to environmental changes and also greatly simplifies the manufacture process. A polarization-insensitive coating (42) or a wave plate (32), a thermal phase tuner (34) with a micro-heater (36), and two compensator plates (38,40) are used in the paths of the beams (ITT,IBT) to balance the optical path lengths and to compensate for polarization and environmental effects.
    • 组合使用反射和反射的反射镜(22)的菱形分束器(14)而不是传统立方体,以获得具有基本共同路径的延迟线干涉仪解调器(10)。 这显着降低了设备对环境变化的敏感性,并大大简化了制造过程。 在光束的路径中使用偏振不敏感涂层(42)或波片(32),具有微加热器(36)的热相位调谐器(34)和两个补偿板(38,40) ITT,IBT)来平衡光路长度并补偿极化和环境影响。
    • 54. 发明申请
    • OPTICAL SIGNAL PROCESSING DEVICE
    • 光信号处理装置
    • WO2006120281A1
    • 2006-11-16
    • PCT/FI2005/050156
    • 2005-05-12
    • PERLOS TECHNOLOGY OYVON LERBER, Tuomo
    • VON LERBER, Tuomo
    • H04B10/06G02F2/00H04L7/00
    • G02F2/00G02F2202/32G02F2203/15H04L7/0075
    • The signal processing device (100) comprises a light source (50) to emit light (S EMIT ) at a wavelength which is substantially equal to the carrier wavelength (λ 0 ) of an optical input signal (S IN ), an optical resonator (10) to provide a filtered signal (S SIDE ) by optical filtering of said optical input signal (S IN ), said optical resonator (10) being non-matched with the carrier wavelength (λ 0 ) of said optical input signal (S IN ), and an optical combiner (80) to combine said filtered signal (S SIDE ) with said emitted light (S EMIT ) to form an optical output signal (S OUT ). The signal processing device (100) may be adapted to recover the clock frequency of a modulated input signal (S IN ). The intensity of said output signal (S OUT ) exhibits periodic variations at the clock frequency when the resonator (10) is adjusted at least approximately to the predetermined sideband of the modulated input signal (S IN ).
    • 信号处理装置(100)包括在基本上等于载波波长(λ<0> 0)的波长处发光的光源(50) 通过对所述光输入信号(S')的光学滤波来提供滤波信号(S SUB SIDE&lt; S SUB&lt; S SUB&lt; SUB> IN),所述光谐振器(10)与所述光输入信号(S SUB IN IN)的载波波长(λ 0)不匹配, ,以及组合所述滤波信号(S SUB SIDE&lt; / SUB)与所述发射光(S SUB)的光学组合器(80),以形成光输出信号(S SUB) OUT )。 信号处理设备(100)可以适于恢复调制输入信号(S IN IN IN)的时钟频率。 当谐振器(10)至少近似调整到调制输入信号的预定边带(S INI IN)时,所述输出信号(S OUT OUT)的强度在时钟频率处呈现周期性变化 )。
    • 55. 发明申请
    • OPTICAL PULSE GENERATION USING A HIGH ORDER FUNCTION WAVEGUIDE INTERFEROMETER
    • 使用高阶功能波形干涉仪进行光学脉冲发生
    • WO00073848A2
    • 2000-12-07
    • PCT/US2000/014136
    • 2000-05-23
    • G02F1/035G02F1/225G02F1/31G02F2/00G02F1/00
    • G02F1/225G02F2/00
    • An optical pulse generator having a high order transfer function that comprises a first and a second nested interferometric modulator, each modulator comprising an optical input, an electrical input, a first arm, a second arm and an optical output. The second interferometric modulator is optically coupled into the second arm of the first interferometric modulator. The optical output of the first interferometric modulator generates pulses at a repetition rate that is proportional to a multiple of a frequency of an electrical signal applied to the electrical input of at least one of the first and second interferometric modulator and at a duty cycle that is inversely proportional to the order of the transfer function of the optical pulse generator. The multiple may be any integer equal to or greater than one.
    • 一种具有高阶传递函数的光脉冲发生器,其包括第一和第二嵌套干涉式调制器,每个调制器包括光输入,电输入,第一臂,第二臂和光输出。 第二干涉式调制器被光耦合到第一干涉式调制器的第二臂中。 第一干涉式调制器的光输出以与施加到第一和第二干涉式调制器中的至少一个的电输入的电信号的频率的倍数成比例的重复频率产生脉冲,并且在占空比为 与光脉冲发生器的传递函数的顺序成反比。 倍数可以是等于或大于1的任何整数。
    • 58. 发明公开
    • Systems and methods for a polarization matched resonator fiber optic gyroscope
    • 系统与Verfahrenfürein polarisierendes angepasstes Resonator-Glasfasergyroskop
    • EP2896935A1
    • 2015-07-22
    • EP15150865.2
    • 2015-01-12
    • Honeywell International Inc.
    • Sanders, Glen A.Srandjord, Lee K.Qiu, TiequnWu, Jianfeng
    • G01C19/72
    • G01C19/722G01C19/721G02F1/2252G02F2/00
    • Systems and methods for a polarization matched resonator fiber optic gyroscope are provided. In one embodiment an RFOG comprises: a light source; a fiber optic ring resonator; a photodetector that outputs an electrical signal that varies as a function of optical intensity; and an input light polarization servo. A light beam from the servo is launched into the resonator ring in a first direction of circulation. The input polarization servo comprises a birefringence modulator that modulates a phase shift between two components of an input polarization state of the light beam at ω m , the modulator is controlled to drive towards zero a 1 st harmonic of ω m as measured in the electrical signal. The servo further comprises a tunable ½ waveplate that adjusts an amplitude of the two components of the input polarization state relative to each other. The tunable ½ waveplate is controlled to maximize a peak optical intensity as measured in the electrical signal.
    • 提供了一种用于偏振匹配谐振器光纤陀螺仪的系统和方法。 在一个实施例中,RFOG包括:光源; 光纤环谐振器; 光电检测器,其输出根据光强度变化的电信号; 和输入光偏振伺服。 来自伺服器的光束沿着第一循环方向发射到谐振器环中。 输入偏振伺服包括双折射调制器,其调制光束的输入偏振状态的两个分量之间的相移在Ém处,调制器被控制为在电信号中测得的Ém的第一谐波为零驱动 。 伺服还包括可调谐的1/2波片,其调节输入偏振状态的两个分量相对于彼此的振幅。 可调谐的1/2波片被控制以使在电信号中测得的峰值光强度最大化。
    • 60. 发明公开
    • Dispersin tolerant optical system and method thereof
    • Dispersionstolerantes optisches System und Verfahrendafür
    • EP2154800A1
    • 2010-02-17
    • EP08162329.0
    • 2008-08-13
    • PGT Photonics S.p.A.
    • Romagnoli, MarcoGalli, Paola
    • H04B10/18G02F2/00G02B6/34
    • H04B10/5563G02F2/00G02F2001/212G02F2202/20H04B10/25073H04B10/504
    • According to an aspect, the present invention relates to an optical communication system for transmitting digital optical signals comprising a data generator adapted to generate a digitally encoded data signal comprising sequences of data at a data rate and comprising two signal levels representing a first state and a second state of the data signal; an optical source adapted to receive the data signal and to produce an optical signal substantially frequency modulated with frequency excursion Δν comprising a first instantaneous frequency (von) associated to the first state and a second instantaneous frequency (ν 1 ) associated to the second state; an optical converter that receives the substantially frequency modulated (FM) optical signal and has an optical transfer function varying with frequency and including at least one pass band with at least a peak transmittance and at least a low-transmittance region, wherein the first frequency of the FM optical signal is spectrally aligned with the low-transmittance region of the optical transfer function of the optical converter so as to convert the substantially FM signal into a substantially amplitude modulated (AM) signal and the at least one pass band has a FWHM comprised between 70% and 200% of the data rate of the FM optical signal
      According to a second aspect, the present invention relates to an optical communication system including an electrical signal path between a data generator and an optical source emitting a substantially FM optical signal with frequency excursion Δν, the electrical signal path being adapted to receive the data signal generated by the data generator and to input the data signal into the optical source and having a low-pass transfer function with a cut-off frequency f c not larger than about 2.2(Δν).
    • 根据一方面,本发明涉及一种用于传输数字光信号的光通信系统,包括数据发生器,该数据发生器适于产生数字编码的数据信号,该数字信号包括数据速率的数据序列,并包括表示第一状态和 第二状态的数据信号; 光源,适于接收数据信号并产生基本上频率调制的光信号,频率偏移“½包括与第一状态相关联的第一瞬时频率(von)和与第二状态相关联的第二瞬时频率(½1) ; 接收基本上频率调制(FM)光信号并且具有随着频率变化并且包括至少一个具有至少一个峰值透射率和至少一个低透射率区域的通带的光学传递函数的光学转换器,其中第一频率 FM光信号与光转换器的光传递函数的低透射率区域频谱对准,从而将基本上FM调制信号转换成基本幅度调制(AM)信号,并且至少一个通带具有包括的FWHM 在FM光信号的数据速率的70%到200%之间。根据第二方面,本发明涉及一种光通信系统,其包括在数据发生器和发射基本上FM光信号的光源之间的电信号路径, 频率偏移“½,电信号路径适于接收由数据发生器a产生的数据信号 nd将数据信号输入到光源中并具有不大于约2.2(“1/2)的截止频率f c的低通传递函数。