Optical amplifier, optical amplifying apparatus, optical transmitter for use in optical communications system, and optical surge suppression method for the optical amplifier
    61.
    发明授权
    Optical amplifier, optical amplifying apparatus, optical transmitter for use in optical communications system, and optical surge suppression method for the optical amplifier 失效
    光放大器,光放大装置,用于光通信系统的光发射机以及用于光放大器的光浪涌抑制方法

    公开(公告)号:US06172801B2

    公开(公告)日:2001-01-09

    申请号:US08925917

    申请日:1997-09-09

    IPC分类号: H01S306

    摘要: There is disclosed a technique regarding an optical amplifier in an optical communications system. In order to effectively suppress optical surges during amplification of signal light, through a simple structure, there is provided an amplifying medium which amplifies input light and outputs the amplified light, and reflecting members are connected to the input and output sides of the amplifying medium. The reflecting members can reflect light with a predetermined optical wavelength different from a signal light wavelength contained in the input light.

    摘要翻译: 公开了关于光通信系统中的光放大器的技术。 为了有效地抑制信号光放大期间的光波动,通过简单的结构,提供了放大输入光并输出放大的光的放大介质,反射构件连接到放大介质的输入和输出侧。 反射构件可以反射具有与输入光中包含的信号光波长不同的预定光波长的光。

    Method and device for optical amplification and system having the device
    62.
    发明授权
    Method and device for optical amplification and system having the device 失效
    用于光放大的方法和装置以及具有该装置的系统

    公开(公告)号:US6151158A

    公开(公告)日:2000-11-21

    申请号:US1092

    申请日:1997-12-30

    摘要: A device comprising an optical amplifier including an optical amplifying medium, and first and second optical filters operatively connected to the optical amplifier to suppress the wavelength dependence of gain. The medium has an input end and an output end for an optical signal. The medium is pumped so that it provides a gain band. The gain band includes a first band giving a relatively high gain and noise figure to the optical signal and a second band giving a relatively low gain and noise figure to the optical signal. The first optical filter is connected to the input end of the medium and has characteristics such that the first optical filter suppresses the wavelength dependence of gain in the second band. The second optical filter is connected to the output end of the medium and has characteristics such that the second optical filter suppresses the wavelength dependence of gain in the first band. This configuration allows suitable suppression of the wavelength dependence of gain in each optical filter, thereby providing a low noise figure and high optical output power.

    摘要翻译: 一种包括包括光放大介质的光放大器和可操作地连接到光放大器以抑制增益的波长依赖性的第一和第二光学滤波器的装置。 介质具有用于光信号的输入端和输出端。 泵送介质使其提供增益带。 增益频带包括对光信号提供相对较高的增益和噪声系数的第一频带以及给予光信号相对低的增益和噪声系数的第二频带。 第一滤光器连接到介质的输入端,并且具有使得第一滤光器抑制第二波段中的增益的波长依赖性的特性。 第二滤光器连接到介质的输出端,并且具有这样的特性,使得第二滤光器抑制第一波段中的增益的波长依赖性。 该配置允许适当地抑制每个滤光器中的增益的波长依赖性,从而提供低噪声系数和高的光输出功率。

    N-benzyldioxothiazolidylbenzamide derivatives and process for producing
the same
    63.
    发明授权
    N-benzyldioxothiazolidylbenzamide derivatives and process for producing the same 失效
    N-苄基二氧代噻唑烷基苯甲酰胺衍生物及其制造方法

    公开(公告)号:US6030990A

    公开(公告)日:2000-02-29

    申请号:US952672

    申请日:1997-12-02

    CPC分类号: C07D417/12 C07D277/34

    摘要: The present invention provides novel N-benzyldioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic and lipid-lowering effects and processes for preparing the same, and relates to N-benzyldioxothiazolidylbenzamide derivatives characterized by being represented by a general formula (1) ##STR1## wherein R.sup.1 and R.sup.2 denote identically or differently hydrogen atoms, lower alkyl groups with carbon atoms of 1 to 4, lower alkoxy groups with carbon atoms of 1 to 3, lower haloalkyl groups with carbon atoms of 1 to 3, lower haloalkoxy groups with carbon atoms of 1 to 3, halogen atoms, hydroxyl groups, nitro groups, amino groups which may be substituted with lower alkyl group(s) with carbon atoms of 1 to 3 or hetero rings, or R.sup.1 and R.sup.2 link to form a methylenedioxy group, R.sup.3 denotes a lower alkoxy group with carbon atoms of 1 to 3, hydroxyl group or halogen atom, and dotted line indicates double bond or single bond in combination with solid line, and processes for preparing the same.

    摘要翻译: PCT No.PCT / JP96 / 01459 Sec。 371日期1997年12月2日第 102(e)日期1997年12月2日PCT提交1996年5月30日PCT公布。 公开号WO96 / 38428 日期:1996年12月5日本发明提供了改善胰岛素抵抗性并具有强力降血糖和降脂效果的新型N-苄基二硫代噻唑烷基苯甲酰胺衍生物及其制备方法,涉及N-苄基二硫代噻唑烷基苯甲酰胺衍生物,其特征在于通式 (1)其中R1和R2表示相同或不同的氢原子,碳原子数为1〜4的低级烷基,碳原子数1〜3的低级烷氧基,碳原子数1〜3的低级卤代烷基,低级卤代烷氧基 具有1至3个碳原子,卤素原子,羟基,硝基,可被具有1-3个碳原子的低级烷基取代的氨基或杂环,或R 1和R 2连接形成亚甲二氧基 基团,R3表示碳原子数为1〜3的低级烷氧基,羟基或卤原子,虚线表示双键或单键与固体锂的结合 ne及其制备方法。

    Optical line terminal
    68.
    发明授权
    Optical line terminal 失效
    光线路终端

    公开(公告)号:US08238753B2

    公开(公告)日:2012-08-07

    申请号:US12414074

    申请日:2009-03-30

    IPC分类号: H04J14/08

    摘要: An optical line terminal receives an optical signal transmitted by time division multiple access from plural optical network units among which are an optical network unit performing communications at a first bit rate and an optical network unit performing communications at a second bit rate. The optical line terminal includes a branching unit, a first receiving unit, and a second receiving unit. The branching unit branches the optical signal into branches, at an asymmetrical branching ratio. The first receiving unit receives a branch having the first bit rate, among the branches of a greater branched proportion. The second receiving unit receives a branch having the second bit rate, among the branches of a lesser branched proportion.

    摘要翻译: 光线路终端从多个光网络单元接收通过时分多址接收发送的光信号,其中光网络单元是以第一比特率进行通信的光网络单元和以第二比特率执行通信的光网络单元。 光线路终端包括分支单元,第一接收单元和第二接收单元。 分支单元以不对称的分支比将光信号分支成分支。 第一接收单元在分支比例较大的分支中接收具有第一比特率的分支。 第二接收单元接收具有较小分支比例的分支中具有第二比特率的分支。

    Gain and signal level adjustments of cascaded optical amplifiers
    69.
    发明授权
    Gain and signal level adjustments of cascaded optical amplifiers 有权
    级联光放大器的增益和信号电平调整

    公开(公告)号:US07969648B2

    公开(公告)日:2011-06-28

    申请号:US11406281

    申请日:2006-04-19

    IPC分类号: H01S3/00

    摘要: An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

    摘要翻译: 一种包括第一和第二光放大器的光放大装置和控制器。 第一光放大器接收光并放大所接收的光。 第二光放大器接收由第一光放大器放大的光,并放大所接收的光。 当由第一光学放大器接收的光的电平改变&Dgr时,控制器控制由第二光放大器接收的光的水平变化大约为&Dgr。 在各种实施例中,控制器使得第一和第二光学放大器的增益之和恒定。 在其他实施例中,光放大装置包括第一和第二光放大器和增益调节器。 增益调节器检测第一光放大器的增益偏离目标增益,并调整第二光放大器的增益以补偿检测到的偏差。

    Method and system for shared optical regeneration
    70.
    发明授权
    Method and system for shared optical regeneration 有权
    共享光学再生的方法和系统

    公开(公告)号:US07664391B2

    公开(公告)日:2010-02-16

    申请号:US11015208

    申请日:2004-12-17

    IPC分类号: G02F1/00 H04B10/00

    摘要: An optical network includes an optical ring that is capable of transmitting, between two or more nodes, a plurality of working traffic streams that include traffic transmitted in one of a plurality of wavelengths. A node is capable of transmitting, in a first wavelength, a first protection traffic stream associated with a first working traffic stream, in response to an interruption of the first working traffic stream. A node is also capable of transmitting, in a second wavelength, a second protection traffic stream associated with a second working traffic stream, in response to an interruption of the second working traffic stream. The optical network also includes a regeneration element capable of selectively regenerating the first protection traffic stream. The regeneration element is also capable of tuning the regeneration element to receive traffic in the second wavelength and of selectively regenerating the second protection traffic stream.

    摘要翻译: 光网络包括光环,其能够在两个或更多个节点之间传送包括以多个波长中的一个发射的业务的多个工作业务流。 响应于第一工作业务流的中断,节点能够以第一波长发射与第一工作业务流相关联的第一保护业务流。 响应于第二工作业务流的中断,节点还能够以第二波长发送与第二工作业务流相关联的第二保护业务流。 光网络还包括能够选择性地再生第一保护业务流的再生元件。 再生元件还能够调整再生元件以接收处于第二波长的通信并且有选择地再生第二保护业务流。