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    • 1. 发明申请
    • Wavelength tunable light source module for wavelength division multiplexing passive optical network system
    • 波长可调光源模块,用于波分复用无源光网络系统
    • US20060098697A1
    • 2006-05-11
    • US11120919
    • 2005-05-02
    • Byoung KimWoo LeeJae Park
    • Byoung KimWoo LeeJae Park
    • H01S3/10
    • H01S5/0612H01S5/02284H01S5/02415
    • Disclosed is a wavelength tunable light source module for wavelength division multiplexing passive optical network systems, which is capable of being realizing at low costs, increasing utility of wavelength resources, and facilitating mass production. The wavelength tunable light source module comprising: a temperature adjustment unit for raising or lowering ambient temperature according to heat generation or heat absorption caused by an electrical signal, a support block attached to the temperature adjustment unit and having a structure for fixing a laser diode, and a TO-can type distributed feedback laser diode mounted on the temperature adjustment unit by the support block and having an operation wavelength varied according to the ambient temperature adjusted by the temperature adjustment unit.
    • 公开了一种用于波分复用无源光网络系统的波长可调光源模块,其能够以低成本实现,增加波长资源的效用并促进批量生产。 该波长可调光源模块包括:温度调节单元,用于根据由电信号引起的发热或吸热而升高或降低环境温度;附接到温度调节单元的支撑块,并具有用于固定激光二极管的结构; 以及通过支撑块安装在温度调节单元上并具有根据由温度调节单元调节的环境温度而变化的工作波长的TO-can型分布式反馈激光二极管。
    • 5. 发明申请
    • Wavelength tracking apparatus and method in WDM-PON system
    • WDM-PON系统中的波长跟踪装置及方法
    • US20070154216A1
    • 2007-07-05
    • US11635701
    • 2006-12-07
    • Byoung KimWoo LeeYun ChungEui SonJang Chae
    • Byoung KimWoo LeeYun ChungEui SonJang Chae
    • H04J14/00
    • H04J14/02H04J14/0221H04J14/0226H04J14/0227H04J14/0246H04J14/025H04J14/0282
    • Provided are an apparatus and method for tracking a wavelength in a passive optical subscriber network in which a central base station and at least one subscriber terminal are connected via a remote node. The apparatus includes a first wavelength aligning unit multiplexing and aligning wavelengths of optical signals from a plurality of single-mode optical sources of the central base station; a second wavelength aligning unit multiplexing and aligning wavelengths of optical signals transmitted to the remote node from a plurality of single-mode optical sources of the subscriber terminal; and a third wavelength aligning unit demultiplexing and aligning wavelengths of optical signals from the second wavelength aligning unit, the third wavelength aligning unit being included in the central base station. Accordingly, when the wavelengths of passbands of a multiplexer/demultiplexer (MUX/DEMUX) of a remote station change due to a change in the ambient temperature, wavelength tracking is performed by making aligned the wavelengths of optical sources of a central base station, a multiplexer/demultiplexer, and subscriber terminals, thereby minimizing optical channel loss and enabling reliable management of WDM-PON.
    • 提供了一种用于跟踪无源光用户网络中的波长的装置和方法,其中中央基站和至少一个用户终端经由远程节点连接。 该装置包括:第一波长对准单元,复用并对准来自中央基站的多个单模光源的光信号的波长; 第二波长对准单元,从用户终端的多个单模光源复用并对准从远程节点传输的光信号的波长; 以及第三波长对准单元,对来自所述第二波长对准单元的光信号进行解复用和对准波长,所述第三波长对准单元包括在所述中央基站中。 因此,当远程站的多路复用器/解复用器(MUX / DEMUX)的通带波长由于环境温度的变化而改变时,通过使中心基站的光源的波长对齐来执行波长跟踪, 多路复用器/解复用器和用户终端,从而最小化光信道丢失并实现WDM-PON的可靠管理。
    • 6. 发明申请
    • Athermal external cavity laser
    • 热外腔激光器
    • US20070127538A1
    • 2007-06-07
    • US11634792
    • 2006-12-05
    • Jie LeeMahn ParkGeon JeongChul KimSeung ChoWoo LeeByoung Kim
    • Jie LeeMahn ParkGeon JeongChul KimSeung ChoWoo LeeByoung Kim
    • H01S3/08
    • H01S5/146G02B6/0218G02B6/0219G02B6/4206H01S5/02284H01S5/02288H01S5/0654H01S5/141H01S5/142
    • Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding. The ECL does not need additional temperature controlling components and thus can be manufactured compact and at low cost, and thus can be used as a light source of a dense wavelength division multiplexing (DWDM) system in designing economical WDM passive optical networks (PON).
    • 提供了一种无热外腔激光器(ECL),其输出光功率和输出波长可以在不使用额外的温度控制部件的情况下保持规则,而不管温度变化。 ECL包括:半导体放大器; 包括其中形成布拉格光栅的芯和围绕所述芯的包层的光纤; 以及热固性聚合物,其将光纤固定到套圈并且具有负热光学系数,其中形成布拉格光栅的芯周围的包层的厚度小于围绕芯的部分的包层部分的厚度, 不形成布拉格光栅,并且热固性聚合物的负热光学系数围绕包层。 ECL不需要额外的温度控制部件,因此可以制造成本小,成本低,因此可以用作密集波分复用(DWDM)系统的光源,用于设计经济的WDM无源光网络(PON)。
    • 9. 发明申请
    • Method and system for selecting information of advertiser in internet search engine in response to search-ordering of partner-site
    • 方法和系统,用于根据合作伙伴网站的搜索排序选择互联网搜索引擎中广告客户的信息
    • US20070198490A1
    • 2007-08-23
    • US11573395
    • 2005-08-31
    • Woo Lee
    • Woo Lee
    • G06F17/30
    • G06Q30/02
    • A keyword advertising service method for providing search information in response to a search request, the method includes the steps of: maintaining a search information database for storing at least one search information record; receiving a search request packet including a keyword inputted in a partner site selected by a user and a site identifier for identifying the partner site, from the partner site; extracting, in response to the search request packet, at least one search information record including a keyword corresponding to the keyword included in the search request packet, from the search information database, by using the bidding participation fee; rolling the extracted search information records independently from the bidding participation fee to be displayed on a result list field and providing the result list field to the partner site in response to the search request; and charging an advertiser corresponding to the search information record, in the case the user clicks the search information record in the search result field.
    • 一种用于响应于搜索请求提供搜索信息的关键字广告服务方法,所述方法包括以下步骤:维护用于存储至少一个搜索信息记录的搜索信息数据库; 从所述伙伴站点接收包括在由用户选择的合作伙伴站点中输入的关键字的搜索请求分组和用于识别所述对方站点的站点标识符; 通过使用投标参与费,从搜索信息数据库中提取响应于搜索请求分组的至少一个搜索信息记录,其包括与包括在搜索请求分组中的关键字相对应的关键字的搜索信息记录; 将所提取的搜索信息记录独立于投标参与费用滚动以显示在结果列表字段上,并且响应于搜索请求将结果列表字段提供给合作伙伴站点; 并且在用户在搜索结果字段中单击搜索信息记录的情况下,对与搜索信息记录相对应的广告商进行计费。