公开(公告)号：US09112600B2

公开(公告)日：2015-08-18

申请号：US13866647

申请日：2013-04-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jie-Hyun Lee ,  Seung-II Myong ,  Han-Hyub Lee ,  Sang-Soo Lee

IPC: H04B10/00 ,  H04B10/07 ,  H04B10/079 ,  H04J14/02

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：US09042691B2

公开(公告)日：2015-05-26

申请号：US14081197

申请日：2013-11-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sae-Kyoung Kang ,  Sang-Soo Lee

IPC: G02B6/34 ,  G02B6/293 ,  G02B6/122 ,  G02B6/30 ,  G02B6/12

CPC classification number: G02B6/34 ,  G02B6/1228 ,  G02B6/29334 ,  G02B6/30 ,  G02B2006/12107

Abstract: An optical coupling module for a silicon photonics chip in which a grating is formed on an optical waveguide, and a material having an intermediate refractive index between refractive indexes of a core and a cladding for side surface optical coupling of the silicon photonics chip is provided. The optical coupling module which is optically coupled with an internal/external optical fiber comprises a core transmitting light, and a cladding covering the core and holding the light in the core through total internal reflection, wherein a grating is formed at one end of the core, and a refractive element is formed between the one end of the core and the cladding, has an intermediate refractive index between the refractive indexes of the core and the cladding, and is optically coupled with the internal/external optical fiber.

Abstract translation: 提供了一种用于硅光子芯片的光耦合模块，其中在光波导上形成光栅，并且提供了具有用于硅光子芯片的侧表面光耦合的芯和包层的折射率之间的中间折射率的材料。 与内部/外部光纤光学耦合的光耦合模块包括一个透射光的芯和一个覆盖芯的包层，并通过全内反射将光保持在芯中，其中光栅形成在芯的一端 并且在芯的一端和包层之间形成折射元件，在芯和包层的折射率之间具有中间折射率，并且与内部/外部光纤光学耦合。

公开(公告)号：US09191142B2

公开(公告)日：2015-11-17

申请号：US13895453

申请日：2013-05-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han-Hyub Lee ,  Sang-Soo Lee

IPC: H04J14/00 ,  H04J14/02

CPC classification number: H04J14/0221 ,  H04B10/272

Abstract: An optical network unit (ONU) having a power saving function for reducing power consumption in an optical network and a power saving method thereof are provided. The ONU includes a first signal transmitter-receiver unit configured to transmit and receive a signal to and from an optical line terminal, a second signal transmitter-receiver unit configured to transmit and receive a signal to and from customer premises equipment through multiple communication ports, a signal processing unit configured to control a signal to be transmitted and received through the first signal transmitter-receiver unit and the second signal transmitter-receiver unit, and a processor configured to control powers of the first signal transmitter-receiver unit and the signal processing unit according to whether data traffic is received through the plurality of communication ports.

Abstract translation: 提供了具有用于降低光网络中的功耗的省电功能的光网络单元（ONU）及其省电方法。 ONU包括被配置为向光线路终端发送信号和从光线路终端接收信号的第一信号发射器 - 接收器单元，被配置为通过多个通信端口向客户驻地设备发送和从客户驻地设备接收信号的第二信号发射器 - 接收器单元， 信号处理单元，被配置为控制通过第一信号发送器 - 接收器单元和第二信号发送器 - 接收器单元发送和接收的信号;以及处理器，被配置为控制第一信号发送器 - 接收器单元的功率和信号处理 根据是否通过多个通信端口接收数据业务单元。

公开(公告)号：US09136968B2

公开(公告)日：2015-09-15

申请号：US14092260

申请日：2013-11-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han-Hyub Lee ,  Sang-Soo Lee

IPC: H04J3/06 ,  H04J14/02

CPC classification number: H04J3/0682 ,  H04J14/0226 ,  H04J14/0238 ,  H04J14/0282

Abstract: A Time Wavelength Division Multiplexing-Passive Optical Network (TWDM-PON) system and a communication link method thereof are provided. The communication link method is a method whereby an Optical Network Unit (ONU) which has established communication link to one Optical Line Terminal (OLT) establishes communication link to a different OLT. The ONU receives a wavelength change instruction to change a wavelength thereof to an operating wavelength assigned to the different OLT, and change the wavelength in response to the wavelength change instruction to synchronize to a downstream signal of the operating signal. In addition, the ONU receives an upstream discovery grant signal from the different OLT, and transmits an acknowledgement message to notify the receipt of the upstream discovery grant signal, so that the ONU establishes communication link to the different OLT.

Abstract translation: 提供了时间波分复用无源光网络（TWDM-PON）系统及其通信链路方法。 通信链路方法是建立与一个光线路终端（OLT）的通信链路的光网络单元（ONU）建立到不同OLT的通信链路的方法。 ONU接收波长改变指令，将其波长改变为分配给不同OLT的工作波长，并响应于波长改变指令改变波长以与操作信号的下行信号同步。 此外，ONU从不同的OLT接收到上游发现许可信号，并且发送确认消息以通知上游发现许可信号的接收，使得ONU建立到不同OLT的通信链路。