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    • 1. 发明申请
    • METHOD AND DEVICE FOR STABILIZING THE STATE OF POLARIZATION OF A POLARIZATION MULTIPLEXED OPTICAL RADIATION
    • 用于稳定极化多光子辐射极化状态的方法和装置
    • WO2006045324A1
    • 2006-05-04
    • PCT/EP2004/011957
    • 2004-10-22
    • PIRELLI & C. S.P.A.BOFFI, PierpaoloMARAZZI, LuciaMARTELLI, PaoloMARTINELLI, MarioRIGHETTI, AldoSIANO, Rocco
    • BOFFI, PierpaoloMARAZZI, LuciaMARTELLI, PaoloMARTINELLI, MarioRIGHETTI, AldoSIANO, Rocco
    • H04J14/06
    • H04J14/06G02F1/0136H04J14/02
    • A device (100) and method for stabilizing the polarization of a polarization multiplexed optical radiation comprising an identified channel which is provided with a pilot signal. The device (100) and method are based on providing to the polarization multiplexed optical radiation a controllable polarization transformation; measuring the optical power of a polarized portion of the identified channel downstream the polarization transformation; controlling, responsively to said optical power, the controllable polarization transformation so that the identified channel downstream the polarization transformation has a predefined polarization azimuth; providing to the optical radiation downstream the polarization transformation a further controllable polarization transformation; measuring the optical power of a polarized portion of the identified channel downstream the further controllable polarization transformation; controlling, responsively to said optical power, the further controllable polarization transformation so that the identified channel downstream the further controllable polarization transformation has a predefined state of polarization (SOP our).
    • 一种用于稳定偏振复用光辐射的偏振的装置(100)和方法,其包括被提供有导频信号的识别信道。 设备(100)和方法基于向偏振复用光辐射提供可控偏振变换; 测量在所述偏振变换下游的所识别的通道的极化部分的光功率; 响应于所述光功率控制所述可控偏振变换,使得所述偏振变换下游的所识别的通道具有预定义的偏振方位; 向偏光变换下游的光辐射提供进一步可控的偏振变换; 测量所识别的通道的偏振部分的光功率在下游的可控偏振变换; 响应于所述光功率控制进一步可控的偏振变换,使得在进一步可控偏振变换下游的所识别的通道具有预定义的偏振态(SOP我们)。
    • 2. 发明申请
    • OPTICAL TRANSMISSION SYSTEM WITH OPTICAL CHROMATIC DISPERSION COMPENSATOR
    • 具有光学色散补偿器的光传输系统
    • WO2008078130A1
    • 2008-07-03
    • PCT/IB2006/003778
    • 2006-12-27
    • PIRELLI & C. S.P.A.BOFFI, PierpaoloGRASSO, GiorgioMARAZZI, LuciaPAROLARI, PaolaRIGHETTI, AldoROMAGNOLI, MarcoTAMIRI, Giovanni
    • BOFFI, PierpaoloGRASSO, GiorgioMARAZZI, LuciaPAROLARI, PaolaRIGHETTI, AldoROMAGNOLI, MarcoTAMIRI, Giovanni
    • H04B10/18G02B6/34
    • H04B10/25133G02B6/29343G02B6/29394
    • Optical transmission system (200) comprising: an optical source (210) adapted to generate a modulated optical signal having an optical spectrum and a dispersion robustness; an optical dispersion compensation filter (250) optically connected to the optical source, comprising at least two cascaded optical resonators and having a periodic transfer function that is rigidly translatable in the frequency spectrum and characterized by a free spectral range (FSR); a control system (270; 280; 260) adapted to act on the optical compensation filter in order rigidly to translate said transfer function along the frequency spectrum in a first and in a second position in such a way that: - in a first position in the frequency spectrum of said transfer function, the mean chromatic dispersion weighted over said optical spectrum of the modulated signal is greater, in absolute value, than the value of dispersion robustness; - in a second position in the frequency spectrum of said transfer function, the mean chromatic dispersion weighted over said optical spectrum of the modulated signal is smaller, in absolute value, than the value of dispersion robustness; - in the first and in the second position the mean slope of the chromatic dispersion weighted over said optical spectrum of the modulated signal is smaller, in absolute terms, than 300000 ps/nm2, where the translation of said transfer function between the first and the second position is smaller than said FSR.
    • 光传输系统(200)包括:光源(210),适于产生具有光谱和色散鲁棒性的调制光信号; 光学连接到光源的光学色散补偿滤波器(250),包括至少两个级联的光学谐振器,并且具有在频谱中可刚性地平移的周期性传递函数,并且由自由光谱范围(FSR)表征。 控制系统(270; 280; 260),其适于作用在所述光学补偿滤波器上,以便在第一和第二位置中沿着所述频谱平移所述传递函数,使得: - 在第一位置 所述传递函数的频谱,在调制信号的所述光谱上加权的平均色散比绝对值大于分散鲁棒性的值; - 在所述传递函数的频谱中的第二位置,在所述调制信号的所述光谱上加权的平均色散比绝对值小于分散鲁棒性的值; - 在第一位置和第二位置,在调制信号的所述光谱上加权的色散的平均斜率绝对值小于300000ps / nm 2,其中所述第一和第二位置之间的所述传递函数的平移 第二个位置小于所述FSR。
    • 3. 发明申请
    • SYSTEM AND METHOD FOR COHERENT DETECTION OF OPTICAL SIGNALS
    • 用于光信号的相关检测的系统和方法
    • WO2009071964A1
    • 2009-06-11
    • PCT/IB2007/054948
    • 2007-12-06
    • PGT PHOTONICS S.P.A.BOFFI, PierpaoloMARAZZI, LuciaMARTELLI, PaoloPAROLARI, PaolaRIGHETTI, Aldo
    • BOFFI, PierpaoloMARAZZI, LuciaMARTELLI, PaoloPAROLARI, PaolaRIGHETTI, Aldo
    • H04B10/148
    • H04B10/6161H04B10/61H04B10/6162H04B10/63H04B10/64
    • An optical communication system (100; 2300) comprises at least a transmitter (110) apt to emit a differential phase shift keying (DPSK) optical signal having a bit-rate equal to R, at least a receiving system (1200) for receiving the differential phase shift keying optical signal; and an optical link (130) optically connecting the transmitter and the receiving system for transmitting the DPSK optical signal from the transmitter to the receiving system, wherein the receiving system comprises a coherent optical receiving device (1205) apt to coherently receive the propagated DPSK optical signal and to emit at least one electrical signal (I) related to the received DPSK optical signal, and wherein the receiving system further comprises at least one electrical filter (270) for filtering the at least one electrical signal and having -3dB double-side bandwidth greater than or equal to 0.44R and lower than or equal to 0.68R, and at least one squarer (280) for squaring the at least one filtered electrical signal. A related method for optical communication is also disclosed.
    • 光通信系统(100; 2300)至少包括一个适于发射具有等于R的比特率的差分相移键控(DPSK)光信号的发射机(110),至少一接收系统(1200) 差分相移键控光信号; 以及光链路(130),其将所述发射机和所述接收系统光学连接,用于将所述DPSK光信号从所述发射机发射到所述接收系统,其中,所述接收系统包括相干光接收装置(1205),所述相干光接收装置适于相干地接收所传播的DPSK光 信号并且发射与所接收的DPSK光信号相关的至少一个电信号(I),并且其中所述接收系统还包括用于对所述至少一个电信号进行滤波并具有-3dB双侧的至少一个电滤波器(270) 带宽大于或等于0.44R且低于或等于0.68R,以及至少一平方(280)用于平坦化所述至少一个滤波后的电信号。 还公开了一种用于光通信的相关方法。
    • 6. 发明申请
    • POLARIZATION STABILIZATION SCHEME FOR UN-COOLED SELF-TUNING CAVITY FOR COLORLESS ULTRA BROADBAND PON
    • 用于无色无线超宽带PON的无冷却自调谐的偏振稳定方案
    • WO2012140186A1
    • 2012-10-18
    • PCT/EP2012/056753
    • 2012-04-13
    • ALCATEL LUCENT ITALIA S.P.A.MARTINELLI, MarioGAVIOLI, GiancarloGALLI, PaolaDI MOLA, DomenicoPAROLARI, PaolaMARAZZI, LuciaRAZZETTI, LucaSUBERINI, LucaCAMPI, Domenico
    • MARTINELLI, MarioGAVIOLI, GiancarloGALLI, PaolaDI MOLA, DomenicoPAROLARI, PaolaMARAZZI, LuciaRAZZETTI, LucaSUBERINI, LucaCAMPI, Domenico
    • H04B10/145H01S5/14H01S3/106
    • H04B10/27H01S3/08054H01S5/02284H01S5/02469H01S5/141H01S5/146H01S5/4062H01S5/4087H04B10/532
    • The present document relates to the field of optical access networks. In particular, the present document relates to an optical transmitter, in particular (but not exclusively) for a WDM (Wavelength Division Multiplexing) passive optical network, and to a WDM PON comprising such an optical transmitter. An optical transmitter arrangement (7) is described. The arrangement (7) comprises a first mirror (41) and a second mirror (64) at a first end and a second end of a cavity, respectively; an optical amplifier (63) configured to amplify light polarized in a first polarization plane; wherein the optical amplifier (63) is positioned within the cavity upstream the first mirror (64); an optical waveguide (5-2) configured to transmit light from the optical amplifier (63) to the second mirror (41) and vice versa; a first non-reciprocal polarization rotator (82) positioned within the cavity upstream of the optical amplifier (63) and downstream of the optical waveguide (5-2); and a second non-reciprocal polarization rotator (81) positioned within the cavity upstream of the optical waveguide (5-2) and downstream of the first mirror (41); wherein the first (82) and second (81) non-reciprocal polarization rotators are configured to rotate the polarization of the light such that light which re-enters the optical amplifier (63) after having been reflected by the second mirror (41) is polarized in the first polarization plane.
    • 本文件涉及光接入网络领域。 特别地,本文件涉及用于WDM(波分复用)​​无源光网络的光发射机,特别是(但不排他地))以及包括这种光发射机的WDM PON。 描述了一种光发射器装置(7)。 装置(7)分别包括位于空腔的第一端和第二端的第一反射镜(41)和第二反射镜(64) 光放大器(63),被配置为放大在第一偏振面中偏振的光; 其中所述光放大器(63)位于所述第一反射镜(64)上游的空腔内; 配置为将光从所述光放大器(63)传输到所述第二反射镜(41)的光波导(5-2),反之亦然; 位于光放大器(63)上游并位于光波导(5-2)下游的空腔内的第一非倒数偏振旋转器(82); 以及位于所述光波导(5-2)上游并位于所述第一反射镜(41)下游的空腔内的第二非互易偏振旋转器(81)。 其中所述第一(82)和第二(81)不可逆偏振旋转器被配置为旋转所述光的偏振,使得在被所述第二反射镜(41)反射之后重新进入所述光放大器(63)的光是 在第一极化平面中极化。