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    Pluggable optical transmitter module for network optical transport system with distortion control
    14.
    发明授权
    Pluggable optical transmitter module for network optical transport system with distortion control 有权
    具有失真控制的网络光传输系统的可插拔光发射模块

    公开(公告)号：US09369205B2

    公开(公告)日：2016-06-14

    申请号：US14482523

    申请日：2014-09-10

    Applicant: NeoPhotonics Corporation

    Inventor： David Piehler

    IPC: H04B10/2575 ,  H04B10/588 ,  H04B10/2507 ,  H04B10/58

    CPC classification number: H04B10/25751 ,  H04B10/2507 ,  H04B10/58 ,  H04B10/588

    Abstract: Linearized optical transmitter units are described for a hybrid optical fiber coaxial cable network. The linearized optical transmitter unit can comprise a directly-modulated or externally-modulated laser optically coupled to an optical conduit directed to an optical fiber communications link and electrically coupled to an electrical RF source line that provides an RF source to drive the laser or an external modulator for a light beam from the laser. A linearization information electrical component comprising memory and/or a processor, and a data output configured to transmit linearization enabling data for input into a direct digital synthesis engine that enables the direct digital synthesis engine to generate an RF signal wherein nonlinear responses of the transmitter and/or the optical fiber communications link are pre-compensated, in which the data is specific for the optical transmitter and/or the optical fiber communications link. An electronic communication channel can connected to the data output of the electrical component to communicate the linearization enabling data external to the linearized optical transmitter unit suitable for communication to the direct digital synthesis engine. The linearized optical transmitter can be assembled in a plug-in module. Corresponding HFC systems and methods are also described.

    Abstract translation: 针对混合光纤同轴电缆网络描述了线性化的光发射机单元。 线性化光发射机单元可包括直接调制或外部调制的激光器，光学耦合到指向光纤通信链路的光导管，并电耦合到提供RF源以驱动激光器或外部 用于来自激光器的光束的调制器。 包括存储器和/或处理器的线性化信息电气部件和被配置为传输线性化使数据输入到直接数字合成引擎的数据输出的数据输出，其使直接数字合成引擎能够产生RF信号，其中发射机和 /或光纤通信链路被预补偿，其中数据是特定于光发射机和/或光纤通信链路的。 电子通信通道可以连接到电气部件的数据输出端，以将线性化光线发送单元外部的线性化使能数据传送到直接数字合成引擎。 线性化的光发射机可以组装在插件模块中。 还描述了相应的HFC系统和方法。

    EFFICIENT PULSE AMPLITUDE MODULATION INTEGRATED CIRCUIT ARCHITECTURE AND PARTITION
    15.
    发明申请
    EFFICIENT PULSE AMPLITUDE MODULATION INTEGRATED CIRCUIT ARCHITECTURE AND PARTITION 有权
    有效的脉冲振幅调制集成电路结构和分区

    公开(公告)号：US20150222366A1

    公开(公告)日：2015-08-06

    申请号：US14174155

    申请日：2014-02-06

    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.

    Inventor： Georgios Asmanis ,  Faouzi Chaahoub

    IPC: H04B10/588 ,  H04B10/50 ,  H04B10/54

    CPC classification number: H04B10/588 ,  H04B10/504 ,  H04B10/505 ,  H04B10/541

    Abstract: A transmitter is disclosed as being configured to encode optical signals in accordance with a multi-level coding scheme. The transmitter includes an Integrated Circuit architecture and partition that relaxes the bandwidth and linearity constraints of a gearbox-to-laser driver interface. In the proposed architecture, the gearbox Integrated Circuit aligns two or more digital data streams and transmits the aligned two or more data streams to the laser driver via separate signals.

    Abstract translation: 公开了发射机被配置为根据多电平编码方案对光信号进行编码。 发射机包括集成电路架构和分区，可以放宽齿轮箱到激光器驱动器接口的带宽和线性约束。 在所提出的架构中，齿轮箱集成电路对准两个或多个数字数据流，并通过单独的信号将对准的两个或多个数据流发送到激光驱动器。

    Duo-binary encoder and optical duo-binary transmission apparatus
    16.
    发明授权
    Duo-binary encoder and optical duo-binary transmission apparatus 失效
    双二进制编码器和光二进制传输装置

    公开(公告)号：US06909386B1

    公开(公告)日：2005-06-21

    申请号：US10858919

    申请日：2004-06-02

    Applicant: Sung-Kee Kim ,  Han-Lim Lee ,  Seong-Taek Hwang

    Inventor： Sung-Kee Kim ,  Han-Lim Lee ,  Seong-Taek Hwang

    IPC: H04J3/00 ,  G11B20/10 ,  H03M5/02 ,  H04B10/2507 ,  H04B10/2513 ,  H04B10/516 ,  H04B10/524 ,  H04B10/54 ,  H04B10/588 ,  H04B10/61 ,  H03M1/00

    CPC classification number: H03M5/02 ,  H04B10/505 ,  H04B10/5055 ,  H04B10/5167

    Abstract: An optical duo-binary transmission apparatus using an optical duo-binary transmission method is disclosed. The apparatus includes a duo-binary encoder that performs parallel processing. The duo-binary encoder includes a level change detection unit for detecting that levels of data input signals of N channels input at an nth input of channels change from 0 to 1, or from 1 to 0; a judgment unit for judging whether a number of level changes detected by the level change detection unit is odd or even; and a toggle unit for toggling an output signal of the judgment unit when the number of level change is odd. The encoder also includes an intermediate signal generation unit for determining whether phases of other channels are shifted or not, according to an data input signal on the basis of a predetermined channel of the N channels; and a phase division unit for dividing data into a first data group having non-shifted phases and a second data group which require a phase shift, according to an output signal of the intermediate signal generation unit and the data input signal, and outputting the divided first and second data groups.

    Abstract translation: 公开了一种使用光二元传输方式的光二元传输装置。 该装置包括执行并行处理的二进制编码器。 二进制编码器包括电平变化检测单元，用于检测在信道的第n个输入端输入的N个信道的数据输入信号的电平从0变化到1，或从1变为0; 判断单元，用于判断由电平变化检测单元检测到的电平变化的数量是奇数还是偶数; 以及切换单元，用于当电平变化次数为奇数时切换判断单元的输出信号。 编码器还包括中间信号产生单元，用于根据N个信道的预定信道根据数据输入信号来确定其它信道的相位是否移位; 以及相位分割单元，根据中间信号生成单元的输出信号和数据输入信号，将数据分割为具有非移相的第一数据组和需要相移的第二数据组，并输出分割 第一和第二数据组。

    Two-optical signal generator for generating two optical signals having adjustable optical frequency difference
    17.
    发明授权
    Two-optical signal generator for generating two optical signals having adjustable optical frequency difference 失效

    公开(公告)号：US06889008B2

    公开(公告)日：2005-05-03

    申请号：US10724055

    申请日：2003-12-01

    Applicant: Masahiro Ogusu

    Inventor： Masahiro Ogusu

    IPC: H01S3/10 ,  G02F2/02 ,  H01S5/065 ,  H04B10/293 ,  H04B10/508 ,  H04B10/54 ,  H04B10/548 ,  H04B10/564 ,  H04B10/572 ,  H04B10/588 ,  H04J14/02 ,  H04B10/04

    CPC classification number: H04J14/02 ,  H04B10/25758

    Abstract: A two-optical signal generator is provided for generating two optical signals, where a difference between optical frequencies or optical wavelength of the two optical signals can be adjusted. A first optical modulator modulates a single-mode optical signal generated by a first light source according to an inputted signal, and outputs a modulated optical signal including predetermined specific two optical signals having a predetermined optical frequency difference, while a second light source generates a multi-mode optical signal including predetermined two further optical signals having substantially the same wavelengths as those of the predetermined specific two optical signals of the modulated optical signal, respectively. Then an optical injection device optically injects the modulated optical signal into the second light source, and the predetermined specific two optical signals of the modulated optical signal are injection-locked into the predetermined two further optical signals of the multi-mode optical signal, so that the second light source generates an injection-locked predetermined specific two optical signals.

    Semiconductor laser device, method for driving the same, and optical communication system using the same
    20.
    发明授权
    Semiconductor laser device, method for driving the same, and optical communication system using the same 失效
    半导体激光装置及其驱动方法以及使用其的光通信系统

    公开(公告)号：US5757828A

    公开(公告)日：1998-05-26

    申请号：US760415

    申请日：1996-12-04

    Applicant: Toshihiko Ouchi

    Inventor： Toshihiko Ouchi

    IPC: H04B10/60 ,  B82Y20/00 ,  H01S5/00 ,  H01S5/042 ,  H01S5/06 ,  H01S5/062 ,  H01S5/12 ,  H04B10/272 ,  H04B10/275 ,  H04B10/278 ,  H04B10/40 ,  H04B10/50 ,  H04B10/524 ,  H04B10/532 ,  H04B10/54 ,  H04B10/588 ,  H01S3/10 ,  H01S3/19

    CPC classification number: B82Y20/00 ,  H01S5/06203 ,  G02F2202/36 ,  H01S2301/14 ,  H01S5/06236

    Abstract: A semiconductor laser device includes a semiconductor substrate, an active layer formed on the substrate extending along a light propagation direction, a first light guide layer extending along the active layer to form a waveguide together with the active layer in which light waves in two different polarization modes can be propagated, a current injection unit for injecting a laser bias current into the active layer, and a control unit for supplying one of a current and a voltage to the first light guide layer independently from the laser bias current injected by the current injection unit. The first light guide layer is formed such that coupling states, in which the light waves in the two different polarization modes are respectively coupled to the active layer and the first light guide layer, can be changed independently from each other by controlling one of the current and the voltage supplied by the control unit. Centers of the light distributions of propagated light waves for the two different polarization modes can be shifted upward or downward differently from each other, so that the coupling degrees of the propagated light waves in the two polarization modes to the active layer are differently controlled to change the threshold current density for at least one of the different polarization modes.

    Abstract translation: 半导体激光器件包括半导体衬底，形成在沿着光传播方向延伸的衬底上的有源层，沿有源层延伸的第一导光层，与有源层一起形成波导，其中两个不同极化的光波 可以传播模式，用于将激光偏置电流注入有源层的电流注入单元和用于将电流和电压中的一个独立于通过电流注入注入的激光偏置电流的第一导光层供给的控制单元 单元。 第一导光层形成为使得两个不同偏振模式中的光波分别耦合到有源层和第一导光层的耦合状态可以通过控制电流中的一个而彼此独立地改变 和由控制单元提供的电压。 用于两种不同偏振模式的传播光波的光分布的中心可以彼此不同地向上或向下偏移，使得两个偏振模式中的传播光波与有源层的耦合度被不同地控制以改变 用于至少一种不同偏振模式的阈值电流密度。

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