公开(公告)号：US20150214387A1

公开(公告)日：2015-07-30

申请号：US14592316

申请日：2015-01-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sae-Kyoung KANG ,  Sang-Soo LEE

IPC: H01L31/028 ,  H01L31/0232 ,  H01L31/02 ,  H01L31/103

CPC classification number: H01L31/028 ,  G02B6/12004 ,  G02B2006/12061 ,  G02B2006/12123 ,  H01L31/02005 ,  H01L31/022408 ,  H01L31/02327 ,  H01L31/103 ,  H01L31/109 ,  Y02E10/547

Abstract: A photodetector is provided. The photodetector includes first metal layers in which optical signals are converted into electric signals; first vias formed between the first metal layers and doped areas which include doped areas on both ends of an optical waveguide and a doped area on a growing portion, which absorbs a light signal transmitted through the optical waveguide; second metal layer in which optical signals are converted into electric signals; and second vias formed between the first metal layers and the second metal layers.

Abstract translation: 提供光电检测器。 光电检测器包括第一金属层，其中光信号被转换成电信号; 形成在第一金属层和掺杂区域之间的第一通孔，所述掺杂区域包括光波导两端的掺杂区域和吸收透过光波导的光信号的生长部分上的掺杂区域; 第二金属层，其中光信号被转换成电信号; 以及形成在第一金属层和第二金属层之间的第二通孔。

公开(公告)号：US20140219661A1

公开(公告)日：2014-08-07

申请号：US14082796

申请日：2013-11-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong-Hwan DOO ,  Seung-Il MYONG ,  Han-Hyub LEE ,  Seung-Hyun CHO ,  Jie-Hyun LEE ,  Sang-Soo LEE

IPC: H04J14/02 ,  H04L7/00

CPC classification number: H04J14/0227 ,  H04J3/1694 ,  H04J14/0246 ,  H04J14/025

Abstract: Provided is a method of selecting a wavelength of an optical network unit including selecting a pre-loaded default wavelength as an available wavelength candidate or the wavelength that has been changed when a preset wavelength changing condition is satisfied as the available wavelength candidate, acquiring frame synchronization for a downstream signal having the same wavelength as the selected available wavelength candidate, and transmitting a registration request message to an optical line terminal (OLT) from which the downstream signal has been transmitted when the frame synchronization is acquired, assigning the available wavelength candidate to an available wavelength used for communication with the OLT and registering the terminal in the OLT when a registration allowance message is received from the OLT.

Abstract translation: 提供了一种选择光网络单元的波长的方法，包括选择预先加载的默认波长作为可用波长候选，或当满足预设波长变化条件时已经改变的波长作为可用波长候选，获取帧同步 对于与选择的可用波长候选具有相同波长的下行信号，并且当获取帧同步时，向已经发送了下行信号的光线路终端（OLT）发送注册请求消息，将可用波长候选分配给 用于与OLT通信的可用波长，并且当从OLT接收到注册允许消息时，在OLT中注册终端。

公开(公告)号：US20130302029A1

公开(公告)日：2013-11-14

申请号：US13866647

申请日：2013-04-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jie-Hyun LEE ,  Seung-Il MYONG ,  Han-Hyub LEE ,  Sang-Soo LEE

IPC: H04B10/07

CPC classification number: H04B10/07 ,  H04B10/07957 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0256 ,  H04J14/0257 ,  H04J14/0258

Abstract: A wavelength tuning time measurement apparatus and method for a multi-wavelength passive optical network (MW PON) are provided. The wavelength tuning time measurement apparatus for measuring a wavelength tuning time of a wavelength-variable light source included in the MW PON system includes an optical filter configured to pass only light of a certain wavelength bandwidth and a photo detector configured to sense light passing through the optical filter. The wavelength tuning time is a time taken from a time when a wavelength change signal is transferred to the wavelength-variable light source, to a time when light starts to be successively sensed by the photo detector.

Abstract translation: 提供了一种用于多波长无源光网络（MW PON）的波长调谐时间测量装置和方法。 用于测量MW PON系统中包括的波长可变光源的波长调谐时间的波长调谐时间测量装置包括被配置为仅通过一定波长带宽的光的光学滤波器和被配置为感测通过 滤光片 波长调谐时间是从波长变化信号传输到波长可变光源的时间到光开始被光电检测器连续感测的时间。

公开(公告)号：US20170155463A1

公开(公告)日：2017-06-01

申请号：US15431533

申请日：2017-02-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han-Hyub LEE ,  Jie-Hyun LEE ,  Eon-Sang KIM ,  Sang-Soo LEE

IPC: H04J14/02 ,  H04B10/079

CPC classification number: H04J14/0242 ,  H04B10/0795 ,  H04B10/2587 ,  H04J14/02 ,  H04J2014/0253

Abstract: A wavelength-division multiplexing optical communication system and a method for measuring optical performance of an output signal for the system. The optical communication system includes: a service-provider device; a local node; and a plurality of subscriber devices. The service-provider device includes: a plurality of first optical transceivers; a first optical multiplexer/demultiplexer (OD/OM) connected to the plurality of first optical transceivers; and a seed-light source providing seed light. Each subscriber device includes a second optical transceiver. The local node connects the service-provider device and the plurality of subscriber devices to each other using aDWDM link comprising: a second multiplexer/demultiplexer (OD/OM); and a single-mode optical fiber for transmission. Here, the optical intensity of an output signal of the second optical transceiver is determined by compensating for the value of the loss caused when the output signal passes through the second OD/OM of the local node.

公开(公告)号：US20140186043A1

公开(公告)日：2014-07-03

申请号：US13974842

申请日：2013-08-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwang-Ok KIM ,  Sang-Soo LEE ,  Jong-Hyun Lee

IPC: H04B10/29

CPC classification number: H04B10/29 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282

Abstract: Provided are a passive optical network reach extender based on a wavelength tunable optical module and a method thereof. According to an embodiment of the invention, a passive optical network reach extender includes a first optical splitter configured to receive an optical signal from an optical line terminal and split the signal into optical signals having a multiplexed wavelength, a wavelength tunable remote relay configured to receive the optical signals split from the first optical splitter, and select and control an available wavelength for each port, a wavelength multiplexer configured to multiplex a wavelength of the optical signal output from the wavelength tunable remote relay, and a second optical splitter configured to split the optical signal multiplexed by the wavelength multiplexer into a plurality of optical network units.

Abstract translation: 提供了一种基于波长可调光学模块的无源光网络扩展器及其方法。 根据本发明的实施例，无源光网络扩展器包括：第一光分路器，被配置为从光线路终端接收光信号，并将信号分离成具有复用波长的光信号，波长可调远程继电器被配置为接收 所述光信号从所述第一光分路器分离，并且选择和控制每个端口的可用波长;波长多路复用器，被配置为复用从所述波长可调谐远程继电器输出的光信号的波长;以及第二分光器， 光信号由波长多路复用器复用成多个光网络单元。

公开(公告)号：US20140161446A1

公开(公告)日：2014-06-12

申请号：US14092297

申请日：2013-11-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han-Hyub LEE ,  Sang-Soo LEE

IPC: H04J14/02 ,  H04B10/079 ,  H04J14/08

CPC classification number: H04J14/0221 ,  H04B10/0777 ,  H04B10/272 ,  H04B10/2914 ,  H04B10/2939 ,  H04J14/0246 ,  H04J14/0282 ,  H04J14/08

Abstract: The TWDM-PON system includes a service provider equipment configured to comprise a plurality of Optical Line Terminals (OLTs), wherein each OLT provides a service in a TWDM scheme; a subscriber equipment configured to comprise a plurality of an Optical Network Units (ONUs), wherein each of the plurality of ONUs utilizes a service provided from one of the plurality of OLTs using an optical signal of an arbitrary wavelength; an Optical Division Network (ODN) configured to transmit multi-wavelength downstream optical signals and multi-wavelength upstream optical signals; and a Reach Extender (RE) configured to comprise at least one of a downstream optical amplifier and an upstream optical amplifier, wherein the downstream optical amplifier is configured to amplify the multi-wavelength optical signals simultaneously, and the upstream optical amplifier is configured to amplify the multi-wavelength optical signals simultaneously.

Abstract translation: TWDM-PON系统包括被配置为包括多个光线路终端（OLT）的服务提供商设备，其中每个OLT以TWDM方案提供服务; 配置为包括多个光网络单元（ONU）的用户设备，其中所述多个ONU中的每一个使用使用任意波长的光信号从所述多个OLT中的一个OLT提供的服务; 配置为发送多波长下行光信号和多波长上行光信号的光分网络（ODN）; 以及配置为包括下游光放大器和上游光放大器中的至少一个的接近扩展器（RE），其中所述下游光放大器被配置为同时放大所述多波长光信号，并且所述上游光放大器被配置为放大 多波长光信号同时进行。

公开(公告)号：US20130294768A1

公开(公告)日：2013-11-07

申请号：US13838309

申请日：2013-03-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Han-Hyub LEE ,  Seung-Il MYONG ,  Eui-Suk JUNG ,  Sang-Soo LEE

IPC: H04B10/071

CPC classification number: H04B10/071

Abstract: An optical layer monitoring apparatus and method thereof are provided. According to an embodiment of the present invention, an optical layer monitoring apparatus including an optical time domain reflectometer (OTDR) function so as to monitor an optical path of a passive optical network (PON), and a method for improving accuracy of measured monitoring results using the optical layer monitoring apparatus are provided. Therefore, it is possible to enable a user to continuously detect distortion or attenuation along the optical path, and to quickly recover from the distortion or attenuation along the optical path when distortion or attenuation is detected.

Abstract translation: 提供了一种光学层监测装置及其方法。 根据本发明的实施例，包括光时域反射计（OTDR）功能以监视无源光网络（PON）的光路的光层监视装置以及用于提高测量监视结果精度的方法 提供了使用光学层监视装置。 因此，可以使用户能够连续地检测沿着光路的失真或衰减，并且当检测到失真或衰减时，可以沿着光路的失真或衰减快速恢复。