公开(公告)号：US20110149365A1

公开(公告)日：2011-06-23

申请号：US12971233

申请日：2010-12-17

Applicant: Seung-Hyun Cho ,  Jong Hoon Lee ,  Eun Gu Lee ,  Jie Hyun Lee ,  Han-Hyub Lee ,  Eui Suk Jung ,  Sang Soo Lee

Inventor： Seung-Hyun Cho ,  Jong Hoon Lee ,  Eun Gu Lee ,  Jie Hyun Lee ,  Han-Hyub Lee ,  Eui Suk Jung ,  Sang Soo Lee

IPC: H01S5/068 ,  G02B5/28 ,  G02F1/17

CPC classification number: G02F1/17 ,  G02B6/4215 ,  G02F1/133608 ,  H01S5/0265 ,  H01S5/141

Abstract: A wavelength tunable light source includes: an optical gain medium generating light; a wavelength tunable filter positioned on a optical path and transmitting or reflecting only a predetermined wavelength generated from and injected into the optical gain medium; a first housing where the optical gain medium and the wavelength tunable filter are mounted; and an optical fiber block providing the optical wave having the predetermined wavelength come from the wavelength tunable filter, wherein the wavelength tunable filter comprised of a dielectric thin-film filter formed by alternately stacking a first dielectric thin film layer and a second dielectric thin film layer having different refractive index.

Abstract translation: 波长可调光源包括：产生光的光学增益介质; 位于光路上的波长可调滤波器，仅传输或反射从光增益介质产生和注入的预定波长; 安装光学增益介质和波长可调滤波器的第一壳体; 并且提供具有预定波长的光波长的光纤块来自波长可调谐滤波器，其中波长可调滤波器由通过交替堆叠第一介电薄膜层和第二介电薄膜层形成的电介质薄膜滤波器组成 具有不同的折射率。

公开(公告)号：US20100150574A1

公开(公告)日：2010-06-17

申请号：US12633006

申请日：2009-12-08

Applicant: Jie-hyun LEE ,  Seung-hyun Cho ,  Byoungi-whi Kim ,  Jea-hoon Yu ,  Jai-sang Koh

Inventor： Jie-hyun LEE ,  Seung-hyun Cho ,  Byoungi-whi Kim ,  Jea-hoon Yu ,  Jai-sang Koh

IPC: H04B10/00

CPC classification number: H04B10/2587

Abstract: A method and apparatus for controlling a reflective semiconductor optical amplifier (RSOA) are provided. The RSOA control apparatus sets a threshold current at which a light source starts to oscillate to be constant regardless of a wavelength of seed light by controlling a driving temperature for driving a RSOA, and adjusts an optical characteristic which is differently output for each wavelength of seed light to be constant by controlling a driving current.

Abstract translation: 提供了一种用于控制反射半导体光放大器（RSOA）的方法和装置。 RSOA控制装置通过控制用于驱动RSOA的驱动温度来设定光源开始振荡的阈值电流，而与种子光的波长无关，并调整对种子的每个波长而不同地输出的光学特性 光通过控制驱动电流而恒定。

公开(公告)号：US20100014545A1

公开(公告)日：2010-01-21

申请号：US12504968

申请日：2009-07-17

Applicant: Jie Hyun Lee ,  Mahn Yong Park ,  Geon Jeong ,  Chul Young Kim ,  Seung Hyun Cho ,  Woo Ram Lee ,  Byoung Whi Kim

Inventor： Jie Hyun Lee ,  Mahn Yong Park ,  Geon Jeong ,  Chul Young Kim ,  Seung Hyun Cho ,  Woo Ram Lee ,  Byoung Whi Kim

IPC: H01S3/10

CPC classification number: H01S5/146 ,  G02B6/0218 ,  G02B6/0219 ,  G02B6/4206 ,  H01S5/02284 ,  H01S5/02288 ,  H01S5/0654 ,  H01S5/141 ,  H01S5/142

Abstract: 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).

Abstract translation: 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：US09100121B2

公开(公告)日：2015-08-04

申请号：US13538662

申请日：2012-06-29

Applicant: Eun-Gu Lee ,  Eui-Suk Jung ,  Sil-Gu Mun ,  Jie-Hyun Lee ,  Han-Hyub Lee

Inventor： Eun-Gu Lee ,  Eui-Suk Jung ,  Sil-Gu Mun ,  Jie-Hyun Lee ,  Han-Hyub Lee

IPC: H04J14/02 ,  H04B10/272

CPC classification number: H04B10/272 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0257 ,  H04J14/0267

Abstract: A link setup method for a wavelength-division-multiplexing passive optical network (WDM PON) system. The system includes a service providing device, a local node, and a plurality of subscriber devices. The link setup method includes assigning an initial wavelength for communication between the service providing device and a new subscriber device to be installed in the local node. The assigning of the initial wavelength may be performed as a part of process for activating the subscriber device, and this procedure may be performed between a physical layer of the service providing device and a physical layer of the new subscriber device.

Abstract translation: 一种波分复用无源光网络（WDM PON）系统的链路建立方法。 该系统包括服务提供设备，本地节点和多个订户设备。 链路建立方法包括为服务提供设备和要安装在本地节点中的新用户设备之间的通信分配初始波长。 初始波长的分配可以作为用于激活用户设备的过程的一部分来执行，并且该过程可以在服务提供设备的物理层与新用户设备的物理层之间执行。

公开(公告)号：US08571420B2

公开(公告)日：2013-10-29

申请号：US13334115

申请日：2011-12-22

Applicant: Seung-Hyun Cho ,  Han-Hyub Lee ,  Jie-Hyun Lee ,  Jong-Hoon Lee ,  Eun-Gu Lee ,  Eui-Suk Jung ,  Sang-Soo Lee

Inventor： Seung-Hyun Cho ,  Han-Hyub Lee ,  Jie-Hyun Lee ,  Jong-Hoon Lee ,  Eun-Gu Lee ,  Eui-Suk Jung ,  Sang-Soo Lee

IPC: H04B10/04

CPC classification number: H04J14/0279 ,  H04B10/506 ,  H04J14/0258 ,  H04J14/0272

Abstract: An apparatus for driving a wavelength-independent light source is provided. The apparatus includes a seed light signal generation unit configured to generate seed light signals with one or more wavelengths based on a wavelength identification signal, a wavelength light detection unit configured to detect the wavelength identification signal from the seed light signals, an extraction unit configured to extract wavelength information corresponding to the detected wavelength identification signal and extract a driving condition of a wavelength-independent light source corresponding to the extracted wavelength information, and a driving unit configured to drive the wavelength-independent light source according to the extracted driving condition.

Abstract translation: 提供一种用于驱动与波长无关的光源的装置。 所述装置包括：种子光信号生成部，其基于波长识别信号生成具有一个以上波长的种子光信号;波长光检测部，被配置为从所述种子光信号检测所述波长识别信号;提取部， 提取与所检测的波长识别信号相对应的波长信息，并提取与提取的波长信息相对应的与波长无关的光源的驱动条件;以及驱动单元，被配置为根据所提取的驱动条件驱动与波长无关的光源。

公开(公告)号：US20120163822A1

公开(公告)日：2012-06-28

申请号：US13334115

申请日：2011-12-22

Applicant: Seung-Hyun CHO ,  Han-Hyub Lee ,  Jie-Hyun Lee ,  Jong-Hoon Lee ,  Eun-Gu Lee ,  Eui-Suk Jung ,  Sang-Soo Lee

Inventor： Seung-Hyun CHO ,  Han-Hyub Lee ,  Jie-Hyun Lee ,  Jong-Hoon Lee ,  Eun-Gu Lee ,  Eui-Suk Jung ,  Sang-Soo Lee

IPC: H04J14/02 ,  H05B37/00

CPC classification number: H04J14/0279 ,  H04B10/506 ,  H04J14/0258 ,  H04J14/0272

Abstract: An apparatus for driving a wavelength-independent light source is provided. The apparatus includes a seed light signal generation unit configured to generate seed light signals with one or more wavelengths based on a wavelength identification signal, a wavelength light detection unit configured to detect the wavelength identification signal from the seed light signals, an extraction unit configured to extract wavelength information corresponding to the detected wavelength identification signal and extract a driving condition of a wavelength-independent light source corresponding to the extracted wavelength information, and a driving unit configured to drive the wavelength-independent light source according to the extracted driving condition.

Abstract translation: 提供一种用于驱动与波长无关的光源的装置。 所述装置包括：种子光信号生成部，其基于波长识别信号生成具有一个以上波长的种子光信号;波长光检测部，被配置为从所述种子光信号检测所述波长识别信号;提取部， 提取与所检测的波长识别信号相对应的波长信息，并提取与提取的波长信息相对应的与波长无关的光源的驱动条件;以及驱动单元，被配置为根据所提取的驱动条件驱动与波长无关的光源。

公开(公告)号：US20100150560A1

公开(公告)日：2010-06-17

申请号：US12625286

申请日：2009-11-24

Applicant: Jie-hyun Lee ,  Seung-hyun Cho ,  Han-hyub Lee ,  Byoung-whi Kim ,  Jea-hoon Yu ,  Sang-soo Lee ,  Jai-sang Koh

Inventor： Jie-hyun Lee ,  Seung-hyun Cho ,  Han-hyub Lee ,  Byoung-whi Kim ,  Jea-hoon Yu ,  Sang-soo Lee ,  Jai-sang Koh

IPC: H04J14/02

CPC classification number: H04B10/2537 ,  H04J2014/0253

Abstract: Disclosed are an optical transmission apparatus and method in a wavelength division multiplexing passive optical network (WDM-PON). The optical transmission apparatus outputs an optical signal by applying a DC bias current and an RF signal to a laser diode at a threshold current level of the laser diode, thereby broadening an optical spectrum of the laser diode. Accordingly, an optical link becomes less vulnerable to reflection induced noise, which contributes to improve stability and reliability of the optical link.

Abstract translation: 公开了波分复用无源光网络（WDM-PON）中的光传输装置和方法。 光传输装置通过在激光二极管的阈值电流电平下向激光二极管施加DC偏置电流和RF信号来输出光信号，从而使激光二极管的光谱变宽。 因此，光链路变得不易受到反射感应噪声的影响，这有助于提高光链路的稳定性和可靠性。

公开(公告)号：US07679819B2

公开(公告)日：2010-03-16

申请号：US11651262

申请日：2007-01-09

Applicant: Byoung Whi Kim ,  Mahn Yong Park ,  Seung Hyun Cho ,  Woo Ram Lee ,  Jie Hyun Lee ,  Geon Jeong ,  Chul Young Kim

Inventor： Byoung Whi Kim ,  Mahn Yong Park ,  Seung Hyun Cho ,  Woo Ram Lee ,  Jie Hyun Lee ,  Geon Jeong ,  Chul Young Kim

IPC: H01S3/00

CPC classification number: H01S5/50 ,  H01S5/06812 ,  H04J14/02 ,  H04J14/0282

Abstract: 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.

Abstract translation: 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：US09091824B2

公开(公告)日：2015-07-28

申请号：US13616725

申请日：2012-09-14

Applicant: Jie-Hyun Lee ,  Seung-Hyun Cho ,  Seung-Il Myong ,  Kwang-Ok Kim ,  Eui-Suk Jung ,  Sang-Soo Lee

Inventor： Jie-Hyun Lee ,  Seung-Hyun Cho ,  Seung-Il Myong ,  Kwang-Ok Kim ,  Eui-Suk Jung ,  Sang-Soo Lee

IPC: H01S5/00 ,  G02B6/38 ,  H01S5/14 ,  G02B6/42 ,  H01S3/1055 ,  H01S5/022 ,  G02B6/293

CPC classification number: G02B6/3845 ,  G02B6/29361 ,  G02B6/4215 ,  G02B6/4292 ,  H01S3/1055 ,  H01S5/02212 ,  H01S5/141 ,  H01S5/146

Abstract: Provided are a user-selectable laser and an optical transmitter including the same. The user-selectable laser is an external cavity laser including a semiconductor laser diode for outputting an optical signal, and a wavelength selection filter. The user-selectable laser may allow a user to select a wavelength selection filter which is optically coupled with the semiconductor laser diode and selectively causes oscillation at the wavelength of an optical signal output from the semiconductor laser diode.

Abstract translation: 提供了一种用户可选择的激光器和包括该激光器的光发射器。 用户可选择的激光器是包括用于输出光信号的半导体激光二极管和波长选择滤波器的外腔激光器。 用户可选择的激光器可以允许用户选择与半导体激光二极管光学耦合的波长选择滤波器，并且选择性地引起从半导体激光二极管输出的光信号的波长的振荡。

公开(公告)号：US09008513B2

公开(公告)日：2015-04-14

申请号：US12809065

申请日：2008-10-16

Applicant: Byoung Whi Kim ,  Han Hyub Lee ,  Jie Hyun Lee ,  Bong Tae Kim

Inventor： Byoung Whi Kim ,  Han Hyub Lee ,  Jie Hyun Lee ,  Bong Tae Kim

IPC: H04J14/00 ,  H04J14/02

CPC classification number: H04J14/0282 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J2014/0253

Abstract: The present invention proposes a wavelength division multiplexing-passive optical network (WDM-PON) system which transmits downstream data to an optical network unit (ONU) as an optical line termination (OLT) receives seed light from a spectrum-sliced external light source module. One characteristic of the proposed WDM-PON system is that optical transmitters of the OLT and ONU are operated regardless of optical wavelength. Another characteristic of the proposed WDM-PON system is that a conventional TDMA-PON (E-PON or G-PON) ONU can be accommodated without a change.

Abstract translation: 本发明提出了一种波分多路复用无源光网络（WDM-PON）系统，其将光线路终端（OLT）从频谱切片的外部光源模块接收种子光，从而将下行数据发送到光网络单元（ONU） 。 所提出的WDM-PON系统的一个特征是OLT和ONU的光发射机无论光学波长如何都被操作。 所提出的WDM-PON系统的另一个特征是可以容易地适应传统的TDMA-PON（E-PON或G-PON）ONU。