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    • 3. 发明申请
    • OPTO-ELECTRONIC OSCILLATOR AND METHOD OF GENERATING AN ELECTRICAL CARRIER SIGNAL
    • 光电振荡器和产生电载波信号的方法
    • WO2017118482A1
    • 2017-07-13
    • PCT/EP2016/050183
    • 2016-01-07
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    • PULERI, MarzioD'ERRICO, AntonioGHELFI, PaoloBOGONI, AntonellaSERAFINO, GiovanniSORIANELLO, VitoPORZI, Claudio
    • G02F1/21G02F2/00G02F2/02
    • G02F1/21G02F2/002G02F2/02G02F2203/13H04B2210/006
    • An opto-electronic oscillator (10) comprising: an optical source (12) to generate an optical carrier signal having a carrier wavelength; an optical phase modulator (14) to apply a sinusoidal phase modulation to the optical carrier signal to generate two first order sidebands having a π phase difference between them; an optical phase shifter (16) comprising an optical resonator configured to apply a substantially π phase-shift to one of the first order sidebands at a preselected wavelength within an optical spectrum of said first order sideband; and a photodetector (18) configured to perform optical heterodyne detection of the optical carrier signal with both: said one of the first order sidebands substantially π phase shifted by the optical resonator; and the other of the first order sidebands, to generate an electrical carrier signal (20), and wherein a first part of the electrical carrier signal (20a) is delivered to an electrical output (22) and a second part of the electrical carrier signal (20b) is delivered to the optical phase modulator as a drive signal.
    • 一种光电子振荡器(10),包括:光源(12),用于产生具有载波波长的光载波信号; 光学相位调制器(14),用于对光学载波信号应用正弦相位调制以产生在它们之间具有π相位差的两个一阶边带; 包括光学谐振器的光学移相器(16),所述光学谐振器被配置为在所述一阶边带的光谱内的预选波长处对所述一阶边带中的一个施加基本π相移; 以及光检测器(18),被配置为利用以下两者执行所述光载波信号的光外差检测:所述一个一级边带中的所述一个被所述光谐振器实质上π相移; 和所述一阶边带中的另一个以产生电载波信号(20),并且其中所述电载波信号(20a)的第一部分被传送到电输出端(22)并且所述电载波信号的第二部分 (20b)作为驱动信号传送到光学相位调制器。
    • 4. 发明申请
    • OPTICAL DIGITAL-TO-ANALOG CONVERSION
    • 光学数字到模拟转换
    • WO2010091740A1
    • 2010-08-19
    • PCT/EP2009/051815
    • 2009-02-16
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)PORZI, ClaudioPOTI, LucaBOGONI, Antonella
    • PORZI, ClaudioPOTI, LucaBOGONI, Antonella
    • G02F7/00G02F1/35
    • G02F7/00G02F1/3515G02F2203/70
    • The present invention relates to Digital-to-Analog conversion in the optical or photonic domain. The present invention pr ovides a digital-to-analog converter (DAC) (100) arranged to receive an N-bit digital optical signal (105) and to process the N-bit digital optical signal to generate an analog optical signal (110). The DAC comprises a photonic circuit (120a, 120b) arranged to adjust the amplitude of each bit of the N-bit digital optical signal dependent on the amplitudes of at least one of the other bits of the N-bit digital optical signal. The amplitudes are adjusted using a non-linear optical effect in order to generate respective outputs for each bit. The DAC also comprises a photonic combiner (145) arranged to combine the outputs for each bit to generate the analog output signal (110).
    • 本发明涉及光或光子域中的数模转换。 本发明提供一种被配置为接收N位数字光信号(105)并且处理N位数字光信号以产生模拟光信号(110)的数模转换器(DAC)(100) 。 DAC包括光电路(120a,120b),其被配置为根据N位数字光信号中的至少一个其它位的振幅调整N位数字光信号的每个位的振幅。 使用非线性光学效应来调整幅度,以便为每个位产生相应的输出。 DAC还包括光子组合器(145),其布置成组合每个位的输出以产生模拟输出信号(110)。