公开(公告)号：US20070133990A1

公开(公告)日：2007-06-14

申请号：US11633349

申请日：2006-12-04

申请人： Byoung Kim ,  Mahn Park ,  Woo-Ram Lee ,  Tae Kim

发明人： Byoung Kim ,  Mahn Park ,  Woo-Ram Lee ,  Tae Kim

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/4202 ,  G02B6/4204 ,  H01S5/0425 ,  H01S5/101 ,  H01S5/1014 ,  H01S5/34 ,  H01S5/5018 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J2014/0253

摘要： A Reflective Semiconductor Optical Amplifier (RSOA) for compensating for light loss in an optical link, an RSOA module for improving polarization dependency using the RSOA, and a Passive Optical Network (PON) for increasing economical efficiency and practical use of a bandwidth using the RSOA are provided. The PON includes a central office comprising a plurality of optic sources transmitting a downstream signal and a plurality of first receivers receiving an upstream signal; at least one optical network terminal (ONT) including a second receiver receiving the downstream signal and an RSOA which receives the downstream signal, remodulates the downstream signal into the upstream signal, and transmits the upstream signal in loopback mode; and a remote node interfacing the central office with the ONT. The upstream signal and the downstream signal are transmitted between the remote node and the ONT via a single optical fiber. The remote node includes an optical power splitter at its port connected to the ONT.

摘要翻译： 用于补偿光链路中的光损耗的反射半导体光放大器（RSOA），用于提高使用RSOA的极化依赖性的RSOA模块和用于提高经济效率和使用RSOA的带宽的实际使用的无源光网络（PON） 被提供。 PON包括中央局，其包括发送下行信号的多个光源和接收上行信号的多个第一接收机; 包括接收下行信号的第二接收器的至少一个光网络终端（ONT）和接收下行信号的RSOA将下行信号重新调制成上行信号，并以环回方式发送上行信号; 以及将中心局与ONT接口的远程节点。 上行信号和下行信号通过单个光纤在远程节点和ONT之间传输。 远程节点在其端口上连接有ONT的光功率分配器。

公开(公告)号：US20070183788A1

公开(公告)日：2007-08-09

申请号：US11651262

申请日：2007-01-09

申请人： Byoung Kim ,  Mahn Park ,  Seung Cho ,  Woo Lee ,  Jie Lee ,  Geon Jeong ,  Chul Kim

发明人： Byoung Kim ,  Mahn Park ,  Seung Cho ,  Woo Lee ,  Jie Lee ,  Geon Jeong ,  Chul Kim

IPC分类号： H04B10/00

CPC分类号： H01S5/50 ,  H01S5/06812 ,  H04J14/02 ,  H04J14/0282

摘要： A reflective semiconductor optical amplifier (RSOA) and an operating system based on a downstream optical signal reuse method with feed-forward current injection are provided. The RSOA has two active regions and includes a reflecting plane that reflects an input optical signal; and an optical amplifying semiconductor including a rear portion, which is positioned at a side of the reflecting plane and to which a signal having polarity opposite to that of the input optical signal is injected, and a front portion, which is positioned at a side opposite to the side of the rear portion facing the reflecting plane and which the input optical signal is passed though and a signal used to modulate a reflected input optical signal from the reflecting plane to an output optical signal is injected into.

摘要翻译： 提供反射半导体光放大器（RSOA）和基于具有前馈电流注入的下行光信号重用方法的操作系统。 RSOA具有两个有效区域，并且包括反射输入光信号的反射平面; 以及光学放大半导体，其包括位于反射面的一侧并且具有与输入光信号的极性相反的信号的后部的后部，以及位于相反侧的一侧的前部 到后面的面向反射面的一侧，并且输入光信号通过，并且将用于将反射的输入光信号从反射平面调制到输出光信号的信号被注入。

公开(公告)号：US20070127538A1

公开(公告)日：2007-06-07

申请号：US11634792

申请日：2006-12-05

申请人： Jie Lee ,  Mahn Park ,  Geon Jeong ,  Chul Kim ,  Seung Cho ,  Woo Lee ,  Byoung Kim

发明人： Jie Lee ,  Mahn Park ,  Geon Jeong ,  Chul Kim ,  Seung Cho ,  Woo Lee ,  Byoung Kim

IPC分类号： H01S3/08

CPC分类号： H01S5/146 ,  G02B6/0218 ,  G02B6/0219 ,  G02B6/4206 ,  H01S5/02284 ,  H01S5/02288 ,  H01S5/0654 ,  H01S5/141 ,  H01S5/142

摘要： 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).

摘要翻译： 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）。

公开(公告)号：US20060093002A1

公开(公告)日：2006-05-04

申请号：US11139763

申请日：2005-05-26

申请人： Mahn Park ,  Byoung Kim

发明人： Mahn Park ,  Byoung Kim

IPC分类号： H01S5/00 ,  H01S3/08 ,  G02B6/12

CPC分类号： G02B6/4232 ,  G02B6/4207 ,  G02B2006/12121 ,  H01S5/0224 ,  H01S5/02252 ,  H01S5/0226 ,  H01S5/1014 ,  H01S5/227 ,  H01S2301/176

摘要： A hybrid type integrated optical device has a semiconductor laser mounted on a planar waveguide platform by flip-chip bonding. The optical device comprises a semiconductor laser and a planar waveguide platform. The semiconductor laser includes a first structure, which has an active region and a light emission surface formed on at least one side surface of the first structure, and a second structure, which is formed below the first structure and has upper surfaces exposed at the light emission surface of the first structure and/or to a surface opposite to the light emitting surface. The planar waveguide platform includes a substrate, a lower clad layer, a core layer, and an upper clad layer, being sequentially stacked on the substrate. The semiconductor laser is flip-chip bonded on the substrate, such that the exposed upper surfaces of the second structure contact the upper surface of the upper clad layer.

公开(公告)号：US20060104322A1

公开(公告)日：2006-05-18

申请号：US11122840

申请日：2005-05-04

申请人： Mahn Park ,  Byoung Kim

发明人： Mahn Park ,  Byoung Kim

IPC分类号： H01S3/04

CPC分类号： G02B5/26 ,  H01S3/106 ,  H01S5/02252 ,  H01S5/02272 ,  H01S5/02284 ,  H01S5/06804 ,  H01S5/1014 ,  H01S5/141

摘要： Hybrid-type external cavity lasers designed to have a semiconductor laser diode mounted on a planar waveguide platform by a flip-chip bonding method. The temperature independent external cavity laser comprises a semiconductor laser diode, a planar waveguide platform, and a thin film multi-layered reflection filter. The semiconductor laser diode includes an active region to generate light, and at least one light-emitting surface. The planar waveguide platform includes a substrate, a metallic pattern formed on a predetermined region of the substrate, a waveguide structure, and a trench portion. The waveguide structure comprises a lower clad layer, a core, and an upper clad layer sequentially stacked in this order on a region of the substrate excluding the predetermined region formed of the metallic pattern. The trench portion has opposite side surfaces on which the core is exposed.

摘要翻译： 混合型外腔激光器被设计成通过倒装芯片接合方法将半导体激光二极管安装在平面波导平台上。 独立于温度的外腔激光器包括半导体激光二极管，平面波导平台和薄膜多层反射滤光器。 半导体激光二极管包括用于产生光的有源区和至少一个发光表面。 平面波导平台包括基板，形成在基板的预定区域上的金属图案，波导结构和沟槽部分。 波导结构包括在除了由金属图案形成的预定区域之外的基板的区域上依次层叠的下包层，芯和上包层。 沟槽部分具有相对的侧表面，芯在其上露出。

公开(公告)号：US20060078257A1

公开(公告)日：2006-04-13

申请号：US11120751

申请日：2005-05-02

申请人： Mahn Park ,  Byoung Kim

发明人： Mahn Park ,  Byoung Kim

IPC分类号： G02B6/28

CPC分类号： G02B6/138 ,  G02B6/12007 ,  G02B2006/12107 ,  G02F1/0147 ,  G02F2201/06 ,  G02F2201/16 ,  G02F2201/18 ,  G02F2201/307 ,  G02F2203/055 ,  G02F2203/585

摘要： Disclosed herein is a tunable wavelength optical transmission module, the wavelength of which can be tuned over the wide wavelength region of a C band and which can be implemented at a low price and, thus, can be applied to an optical network terminal. Bragg gratings having different grating periods are arranged in parallel or series and the temperatures of Bragg grating regions are then controlled, so that the wavelength of an optical signal can be tuned over a wide wavelength range through the small variation in temperature.

摘要翻译： 这里公开了一种可调波长光传输模块，其波长可以在C波段的宽波长区域上调谐，并且可以以低价格实现，并且因此可以应用于光网络终端。 具有不同光栅周期的布拉格光栅被平行或串联布置，然后控制布拉格光栅区域的温度，使得光信号的波长可以通过较小的温度变化在宽波长范围内调谐。

公开(公告)号：US20050129400A1

公开(公告)日：2005-06-16

申请号：US10912340

申请日：2004-08-04

申请人： Tae Kim ,  Jeong Yoo ,  Byoung Kim

发明人： Tae Kim ,  Jeong Yoo ,  Byoung Kim

IPC分类号： H04L12/56 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0282 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0086

摘要： The present invention relates to a WDM/SCM-PON and a media access control method for asymmetric packet communication in the same. In the WDM/SCM-PON, each SCM channel is classified and used as a link by adopting an SCM technique of subdividing a wavelength band of up/downstream data links between an OLT and ONTs into frequency bands, and the ONTs are formed so that a certain SCM channel is independently distributed not fixedly assigned. Accordingly, an inventory problem, which can be generated in WDM/SCM, is prevented before happens, asymmetric dynamic band allocation is performed, and asymmetric service of up/downstream transmission is supported. As a result, a band required for next generation service is dynamically provided, optical interference effect is minimized, and Ethernet compatibility is provided so that Ethernet service suitable for providing IP service can be accommodated.

摘要翻译： 本发明涉及一种WDM / SCM-PON及其中的非对称分组通信的媒体接入控制方法。 在WDM / SCM-PON中，通过采用将OLT和ONT之间的上下行数据链路的波段划分成频带的SCM技术将每个SCM信道分类并用作链路，并且形成ONT，使得 某个SCM信道是独立分配的，没有固定分配。 因此，在发生之前可以防止在WDM / SCM中产生的库存问题，执行非对称动态频带分配，支持上下行传输的非对称业务。 结果，动态地提供了下一代业务所需的频带，减少了光干扰效应，提供了以太网兼容性，从而可以适应提供IP业务的以太网业务。

公开(公告)号：US20060133382A1

公开(公告)日：2006-06-22

申请号：US11124453

申请日：2005-05-05

申请人： Hyun Yun ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

发明人： Hyun Yun ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04L47/34 ,  H04L47/10 ,  H04L47/125

摘要： The present invention provides an apparatus and method for preserving a frame sequence and distributing traffic in a multi-channel link, which efficiently distributes frame traffic while preserving the transmission sequence of frames in a link composed of multiple channels, and to a multi-channel transmitter using the apparatus and method. The present invention determines whether the preservation of a sequence of frames is required using information about received frames, predicts a frame transmission service finish time on the basis of the length of frames if the sequence preservation is required, determines a sequence preservation service time (SPST) on the basis of the predicted transmission service finish time, stores the frames in a sequence preservation buffer for the SPST, and distributes the frames to idle transmitters at a termination point of the SPST, thus maximizing the efficiency of channel use.

公开(公告)号：US20060127091A1

公开(公告)日：2006-06-15

申请号：US11133071

申请日：2005-05-18

申请人： Jeong Yoo ,  Tae Kim ,  Hyun Yun ,  Byoung Kim ,  Nam Kim ,  Jae Kim ,  Bok Jung ,  Min Kang

发明人： Jeong Yoo ,  Tae Kim ,  Hyun Yun ,  Byoung Kim ,  Nam Kim ,  Jae Kim ,  Bok Jung ,  Min Kang

IPC分类号： H04J14/00

CPC分类号： H04L45/00 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04L12/185 ,  H04L45/16 ,  H04L45/62 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0069

摘要： The present provides a method of dynamically managing multicast groups and allocating multicast service wavelengths for the highest channel efficiency. According to the present invention, the share indices of wavelengths of all multicast service groups, which employ broadcasting wavelengths and data wavelengths, are periodically ascertained on the basis of IGMP snooping-based technology in a WDM-PON. Based on the ascertainment results, if the channel share index of the group that employs the broadcasting wavelength is smaller than the channel share index of the group that employs the data wavelength, the share index of the wavelength of the multicast group that employs the broadcasting wavelength is maximized by dynamically changing allocation of the wavelength of the multicast group, so that a maximum multicast service can be provided within limited resources.

公开(公告)号：US20070154217A1

公开(公告)日：2007-07-05

申请号：US11636131

申请日：2006-12-08

申请人： Tae Kim ,  Jeong Yoo ,  Kang Lee ,  Hyeon Yoon ,  Byoung Kim

发明人： Tae Kim ,  Jeong Yoo ,  Kang Lee ,  Hyeon Yoon ,  Byoung Kim

IPC分类号： H04J14/00

CPC分类号： H04J14/02 ,  H04J14/0282

摘要： Provided are extendable loop-back passive optical network (PON) and scheduling method and apparatus for the same. The loop-back type PON includes an OLT (optical line terminal) including a wavelength-tunable optical transmitter and a wavelength-locked optical receiver, and an RN (remote node) including an optical coupler/splitter, the optical coupler/splitter receiving optical signals from the wavelength-tunable optical transmitter and splitting the optical signals by wavelength so as to transmit the optical signals to corresponding ONTs (optical network terminals). Each of the ONTs transmits upstream data to the OLT using the same wavelength as the wavelength of the optical signal received from the OLT through the RN. Since the optical network makes use of the TDM and WDM communication schemes, the optical network can be maintained and upgraded at lower cost.

摘要翻译： 提供了可扩展环回无源光网络（PON）及其调度方法和装置。 环回型PON包括包括波长可调光发射机和波长锁定光接收机的OLT（光线路终端）和包括光耦合器/分离器的RN（远程节点），光耦合器/分离器接收光 来自波长可调光发射机的信号，并通过波长分割光信号，以将光信号传输到相应的ONT（光网络终端）。 每个ONT使用与从OLT通过RN接收的光信号的波长相同的波长向OLT发送上行数据。 由于光网络利用TDM和WDM通信方案，可以以更低的成本维护和升级光网络。