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    ANALOG-DIGITAL-KONVERTER UND VERFAHREN ZUM ERZEUGEN EINES DIGITALEN DATENSTROMES
    6.
    发明公开
    ANALOG-DIGITAL-KONVERTER UND VERFAHREN ZUM ERZEUGEN EINES DIGITALEN DATENSTROMES 审中-公开
    VERFAHREN ZUM埃塞俄比亚数字数位科技数字数字日期数据

    公开(公告)号：EP2976834A2

    公开(公告)日：2016-01-27

    申请号：EP14710888.0

    申请日：2014-03-18

    申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.

    发明人： SCHELL, Martin

    IPC分类号： H03M1/12 ,  H03M1/20

    摘要： The invention relates to an analogue-digital converter (5) having at least one input, to which at least one analogue input signal (S(t)) can be supplied, and at least one output (31), which is configured to output a digital data stream that represents the analogue input signal, wherein the analogue-digital converter has an optical input stage (1), which is designed to convert the analogue input signal (S(t)) into a phase-modulated optical signal and to feed the signal to a hybrid coupler (12) having a plurality of output waveguides (122), each connected to at least one photodiode (13a, 13b), the connection contacts of the photodiodes (13a, 13b) are each connected to the input of an associated analogue-digital converter (21a, 21b), with which converters an analogue electrical input signal can be converted into a digital electrical output signal and the output of the analogue-digital converters (21a, 21b) is connected to the inputs of an output stage (3), which is designed to form the digital data stream at the output (31) from the digital output signals of the analogue-digital converters (21a, 21b), wherein the output stage (3) is designed to select the output signal of the analogue-digital converter (21a) that lies inside a specifiable range of amplitude and has a specifiable slope and/or is greater than specifiable adjacent output signal. The invention further relates to a corresponding method for generating a digital data stream.

    摘要翻译： 模拟数字转换器具有光输入级，被配置为将模拟输入信号（S（t））转换为相位调制光信号，并将其提供给具有多个输出波导的混合耦合器，每个输出波导连接到 最少一个光电二极管。 光电二极管各自连接到相关模拟数字转换器的输入端，模拟电输入信号可通过该输入转换为数字输出信号。 输出级被配置为在模拟数字转换器的数字输出信号的输出处形成数字数据流，并且输出级可以被配置为选择位于可预定义范围内的模数转换器的输出信号 并且具有预定义的斜率和/或大于预定义的相邻输出信号。

    STIMMBARER DBR-LASER UND VERFAHREN ZUM BETREIBEN EINES STIMMBAREN DBR-LASERS
    7.
    发明公开
    STIMMBARER DBR-LASER UND VERFAHREN ZUM BETREIBEN EINES STIMMBAREN DBR-LASERS 有权
    可调DBR激光器及其操作方法可调谐DBR激光器

    公开(公告)号：EP2810346A1

    公开(公告)日：2014-12-10

    申请号：EP12808737.6

    申请日：2012-12-10

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： SCHELL, Martin ,  RUNGE, Patrick

    IPC分类号： H01S5/026 ,  H01S5/10 ,  H01S5/14

    CPC分类号： H01S5/068 ,  H01S5/021 ,  H01S5/02248 ,  H01S5/026 ,  H01S5/0261 ,  H01S5/1032 ,  H01S5/141

    摘要： The invention relates to a tunable DVR laser (1; 1'; 1"), comprising an amplifier section (2) containing an active material (3), a partially reflecting optical output (4), a connecting section (5) that follows the amplifier section (2) at an end (6) of the amplifier section (2) opposite the output (4) of the DBR laser (1), and a wavelength-selective reflector (7a, 7b, 7c, 7d) optically coupled to the amplifier section (2) by the connecting section (5), wherein the DBR laser (1) has at least one further wavelength-selective reflector (7a, 7b, 7c, 7d), which is likewise optically coupled to the amplifier section (2) by the connecting section (5), and the connecting section (5) contains at least one MMI coupler (9), wherein the wavelength-selective reflectors (7a, 7b, 7c, 7d) differ from one another by different reflection spectra and are each connected to one of several outputs (10a, 10b, 10c, 10d) of the at least one MMI coupler (9), wherein the connecting section (5) comprises a plurality of waveguides (13a, 13b, 13c, 13d; 16a, 16b, 16c, 16d) running beside one another, such that different optical paths respectively lead from the amplifier section (2) to each of the reflectors (7a, 7b, 7c, 7d) through the at least one MMI coupler and through one of the waveguides (13a, 13b, 13c, 13d; 16a, 16b, 16c, 16d), and wherein a phase shifter (11a, 11b, 11c, 11d) is arranged in the course of at least one of said waveguides (13a, 13b, 13c, 13d; 16a, 16b, 16c, 16d), such that by activating the at least one phase shifter (11a, 11b, 11c, 11d), the DBR laser (1) can be switched between various resonators that are respectively delimited by one of the wavelength-selective reflectors (7a, 7b, 7c, 7d). The invention further relates to a method for operating a tunable DBR laser (1).