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    • 1. 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)。
    • 2. 发明申请
    • 光制御方法および装置
    • 光学控制方法和装置
    • WO2002061502A1
    • 2002-08-08
    • PCT/JP2001/011329
    • 2001-12-25
    • 前田 佳伸
    • 前田 佳伸
    • G02F2/02
    • G02F1/3515G02F2/004G02F2201/16G02F2203/70
    • An optical control device capable of controlling an optical signal with an optical signal. A first laser beam (L1) of a wavelength ( lambda 1) and a second laser beam (L2) of a wavelength ( lambda 2) are multiplexed by a first coupler (24) and inputted to an optical amplifier device (26). A beam of wavelength ( lambda 2) selected by a first optical filter device (29), out of the beams from the optical amplification device (26) and a third laser beam (L3) of the wavelength ( lambda 1) are multiplexed by a second optical coupler (24') and inputted to a second optical amplification device (26'). The beam of the wavelength ( lambda 1) selected by a second optical filter element (28), out of the beams from the second optical amplification device (26') is amplified and outputted, as shown by an output signal (Iout) in FIG. 10 (a). The first laser beam (L1) of the first wavelength ( lambda 1) can be outputted as the output beam of the first wavelength ( lambda 1) by carrying out control, e.g., switching it with the third input beam of the first wavelength ( lambda 1).
    • 一种能够利用光信号控制光信号的光控制装置。 波长(λ1)的第一激光束(L1)和波长(λ2)的第二激光束(L2)由第一耦合器(24)复用并输入到光放大器装置(26)。 由光放大装置(26)的波束和波长(λ1)的第三激光束(L3)中的由第一滤光器装置(29)选择的波长波长(λ2)被多路复用 第二光耦合器(24')并输入到第二光放大装置(26')。 由第二光学滤波器元件(28)选择的波长的波束(λ1)从第二光放大装置(26')的波束中被放大并输出,如图4中的输出信号(Iout)所示 。 10(a)。 第一波长(λ1)的第一激光束(L1)可以作为第一波长(λ1)的输出光束进行控制,例如用第一波长的第三输入光束(λ 1)。
    • 5. 发明申请
    • ALL-OPTICAL WAVELENGTH CODED LOGIC GATES
    • 全光波长编码逻辑门
    • WO1998020376A1
    • 1998-05-14
    • PCT/US1997020405
    • 1997-11-07
    • CALIFORNIA INSTITUTE OF TECHNOLOGY
    • CALIFORNIA INSTITUTE OF TECHNOLOGYVAHALA, Kerry, JohnPAIELLA, RobertoHUNZIKER, Guido
    • G02B06/00
    • G02F1/3515G02F2/004G02F3/00G02F2203/70
    • All-optical logic gates in which binary words are encoded using wavelength. A method and apparatus for processing information in this wavelength encoded format is provided. The processing may occur entirely in the optical domain. This approach is modular and enables construction of logic gates using custom waveguide chips that can be mass-produced in a manner similar to that of conventional electronic digital chips. Specific gates, such as AND, OR, EXOR, or NAND, may be "programmed" into a given chip during its fabrication to encode the desired truth table. The ouptut states of the chip are determined by ultrafast mixing of binary encoded wavelengths in a semiconductor optical amplifier. The result is a new wavelength having a relationship to the input wavelengths determined entirely by the desired truth table.
    • 使用波长对二进制字进行编码的全光逻辑门。 提供了一种用于处理该波长编码格式的信息的方法和装置。 该处理可以完全在光学域中发生。 该方法是模块化的,并且可以使用可以以类似于常规电子数字芯片的方式批量生产的定制波导芯片来构建逻辑门。 诸如AND,OR,EXOR或NAND的特定门可以在其制造期间被编程到给定芯片中以对期望的真值表进行编码。 通过在半导体光放大器中的二进制编码波长的超快速混合来确定芯片的断开状态。 结果是与完全由所需真值表确定的输入波长具有关系的新波长。
    • 6. 发明申请
    • AN OPTICAL SWITCH AND A METHOD OF SWITCHING AN OPTICAL SIGNAL
    • 光学开关和切换光信号的方法
    • WO2013013695A1
    • 2013-01-31
    • PCT/EP2011/062613
    • 2011-07-22
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)PORZI, ClaudioCONTESTABILE, GiampieroBOGONI, Antonella
    • PORZI, ClaudioCONTESTABILE, GiampieroBOGONI, Antonella
    • G02F2/00G02F1/35
    • G02F1/3517G02F2/004G02F2001/212G02F2203/585G02F2203/70
    • An optical switch (10) comprising: a first signal input (12) to receive an OOK modulated optical traffic probe signal having a first wavelength and carrying communications traffic and an optical gate probe signal having a second wavelength; a first output (16); a second output (18); a first pump input (30) coupled to the first arm to deliver an optical gate pump signal having the second wavelength and an optical traffic pump signal into the first arm in the second direction of propagation; an optical interferometer (20) having a first state in which the traffic probe and traffic pump signals are synchronously present within the nonlinear medium, to produce a first phase difference between the first and second arms whereby the traffic probe signal is output at one of a first signal output and a second signal output and having a second state in which the traffic probe and pump signals, and gate probe and pump signals are synchronously present within the nonlinear medium, such that a second phase difference is produced between the first and second arms whereby an OOK modulated output optical signal at the second wavelength, carrying the communications traffic, is output at said output; anda controller (34) arranged to selectively cause the optical gate pump signal to be delivered to the first pump input, to selectively set the interferometer to its second state.
    • 一种光开关(10),包括:第一信号输入(12),用于接收具有第一波长并承载通信业务的OOK调制光业务探测信号和具有第二波长的光栅探针信号; 第一输出(16); 第二输出(18); 耦合到所述第一臂的第一泵输入(30),以在所述第二传播方向上将具有所述第二波长的光栅泵浦信号和光交通泵浦信号传送到所述第一臂; 具有第一状态的光干涉仪(20),其中所述交通量探测器和交通泵信号同步地存在于所述非线性介质内,以产生所述第一和第二臂之间的第一相位差,由此所述交通探测信号以 第一信号输出和第二信号输出,并且具有第二状态,其中业务探测器和泵信号以及门探针和泵浦信号同时存在于非线性介质内,使得在第一和第二臂之间产生第二相位差 由此在所述输出处输出携带通信业务的第二波长的OOK调制输出光信号; 和控制器(34),其布置成选择性地使光栅泵浦信号被输送到第一泵输入端,以选择性地将干涉仪设置到其第二状态。
    • 8. 发明申请
    • OPTICAL FLIP-FLOP
    • WO2009129866A1
    • 2009-10-29
    • PCT/EP2008/055115
    • 2008-04-25
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)BERRETTINI, GianlucaMALACARNE, AntonioPOTI, LucaBOGONI, Antonella
    • BERRETTINI, GianlucaMALACARNE, AntonioPOTI, LucaBOGONI, Antonella
    • G02F3/02H01S3/23
    • G02F3/026G02F2203/70
    • An optical flip-flop comprises first (102) and second (104) flip-flop elements arranged to respectively provide first (output 1) and second (output 3) optical outputs. Each output is in one of a plurality of states, wherein switching the output from a relatively high power state to a relatively low power state has an associated falling edge transition time, and switching the output from a relatively low power state to a relatively high power state has an associated rising edge transition time. The rising edge transition time is greater than the falling edge transition time. The optical flip-flop also comprises a processor (106) arranged to process the first and second outputs to provide an optical flip-flop output, being one of a plurality of state outputs, wherein switching the flip-flop output froma relatively high power state to a relatively low power state has an associated falling edge transition time, and switching the flip-flop output froma relatively low power state to a relatively high power state has an associated rising edge transition time. The processor is arranged to process the first and second outputs such that both the falling edge transition time and the rising edge transition time of the flip-flop output are independent of the rising edge transitiontimes of boththe first and second flip-flop elements. The invention also provides a method of operating the flip-flop, an optical switching arrangement and an optical switching method.
    • 光学触发器包括布置成分别提供第一(输出1)和第二(输出3)光输出的第一(102)和第二(104)触发器元件。 每个输出处于多个状态之一,其中将输出从相对高功率状态切换到相对低功率状态具有相关联的下降沿转换时间,并且将输出从相对低功率状态切换到相对较高的功率 状态具有相关联的上升沿转换时间。 上升沿转换时间大于下降沿转换时间。 光学触发器还包括处理器(106),其被配置为处理第一和第二输出以提供作为多个状态输出之一的光学触发器输出,其中将触发器输出从较高功率状态切换 相对低功率状态具有相关联的下降沿转换时间,并且将触发器输出从相对低功率状态切换到相对高功率状态具有相关联的上升沿转换时间。 处理器被布置为处理第一和第二输出,使得触发器输出的下降沿转换时间和上升沿转换时间都与第一和第二触发器元件的上升沿转换时间无关。 本发明还提供了一种操作触发器,光开关装置和光开关方法的方法。
    • 10. 发明申请
    • DUAL-RING-MODULATED LASER THAT USES PUSH-PUSH/PULL-PULL MODULATION
    • 双环调制激光器,采用推 - 拉/拉 - 拉调制
    • WO2018057415A1
    • 2018-03-29
    • PCT/US2017/051733
    • 2017-09-15
    • ORACLE INTERNATIONAL CORPORATION
    • KRISHNAMOORTHY, Ashok V.BOVINGTON, Jock T.ZHENG, XuezheLUO, YingLIN, Shiyun
    • H01S5/14
    • G02F1/011G02F2203/15G02F2203/70H01S3/082H01S3/0826H01S3/083H01S3/107H01S5/142
    • A dual-ring-modulated laser includes a gain medium (202) having a reflective end coupled to an associated gain-medium reflector and an output end, which is coupled to a reflector circuit through an input waveguide to form a lasing cavity. The reflector circuit comprises: a first ring modulator (216); a second ring modulator (217); and a shared waveguide that optically couples the first and second ring modulators together. The first and second ring modulators have resonance peaks that are tuned to be offset in alignment from each other to provide an effective reflectance having a flat-top response, which is aligned with an associated lasing cavity mode. The first and second ring modulators are driven in tandem based on the same electrical input signal, whereby the resonance peaks of the first and second ring modulators shift wavelengths in the same direction during modulation, and an effective reflectance stays within the flat-top wavelength range.
    • 双环调制激光器包括增益介质(202),该增益介质具有耦合到相关联的增益介质反射器的反射端和通过输入波导耦合到反射器电路的输出端 形成激光腔。 该反射器电路包括:第一环形调制器(216); 第二环形调制器(217); 以及将第一和第二环形调制器光学耦合在一起的共享波导。 第一和第二环形调制器具有谐振峰值,所述谐振峰值被调谐成彼此对准地偏移以提供具有平顶响应的有效反射率,该有效反射率与相关激射谐振腔模式对准。 基于相同的电输入信号串联驱动第一和第二环形调制器,由此第一和第二环形调制器的谐振峰值在调制期间在相同方向上移动波长,并且有效反射率保持在平顶波长范围内