公开(公告)号：KR1020130118803A

公开(公告)日：2013-10-30

申请号：KR1020130043186

申请日：2013-04-18

Applicant: 한국전자통신연구원

Inventor： 이지현 ,  명승일 ,  이한협 ,  이상수

IPC: H04J14/02 ,  H04B10/25

CPC classification number: H04J14/02 ,  H04B10/25

Abstract: PURPOSE: A wavelength tuning time measurement apparatus and method for multi-wavelength passive optical network (MW PON) are provided to select a wavelength-variable light source considering the required wavelength tuning time of an MW PON system. CONSTITUTION: A wavelength-variable light source (100) comprises a wavelength-variable laser (110) and a wavelength-variable laser driving unit (120). The wavelength-variable laser generates various wavelengths of light. The wavelength-variable laser driving unit includes information about the wavelength of light generated by the wavelength-variable laser in a wavelength change signal and transmits the wavelength change signal to the wavelength-variable laser. If the wavelength-variable laser receives the wavelength change signal from the wavelength-variable laser driving unit, the wavelength-variable laser generates a predetermined wavelength of light. A wavelength tuning time measuring device (200) measures the wavelength tuning time of the wavelength-variable light source. An optical filter (210) passes only a predetermined wavelength of light, for example, light within a channel wavelength range. An optical detector (220) generates information about time when the light passing through the optical filter consecutively begins to reach or calculates a wavelength tuning time by using the information. [Reference numerals] (110) Wavelength-variable laser; (120) Wavelength-variable laser driving unit; (210) Optical filter; (220) Optical detector; (300) Attenuator

Abstract translation: 目的：提供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，以考虑MW PON系统所需的波长调谐时间来选择波长可变光源。 构成：波长可变光源（100）包括波长可变激光器（110）和波长可变激光器驱动单元（120）。 波长可变激光产生各种波长的光。 波长可变激光器驱动单元包括关于由波长可变激光器在波长变化信号中产生的光的波长的信息，并将波长变化信号发送到波长可变激光器。 如果波长可变激光器从波长可变激光驱动单元接收波长变化信号，则波长可变激光器产生预定波长的光。 波长调谐时间测量装置（200）测量波长可变光源的波长调谐时间。 滤光器（210）仅通过预定波长的光，例如通道波长范围内的光。 光检测器（220）产生关于通过光学滤波器的光连续开始达到或通过使用该信息来计算波长调谐时间的时间的信息。 （附图标记）（110）波长可变激光器; （120）波长可变激光驱动单元; （210）滤光片; （220）光学检测器; （300）衰减器

公开(公告)号：KR1020130007481A

公开(公告)日：2013-01-18

申请号：KR1020120071048

申请日：2012-06-29

Applicant: 한국전자통신연구원

Inventor： 이은구 ,  정의석 ,  문실구 ,  이지현 ,  이한협

IPC: H04J14/02 ,  H04B10/12

CPC classification number: H04J14/023 ,  H04B10/14 ,  H04J2203/0032 ,  H04J2203/0067

Abstract: PURPOSE: A link establishment method for a wavelength division multiplexing passive type optical communication network system is provided to increase the stability of optical fiber management by keeping the optical intensity input to optical fibers low. CONSTITUTION: A link establishment method for a wavelength division multiplexing passive type optical communication network system includes a service provider system, a local node and multiple subscriber devices. The link establishment method includes a wavelength initialization procedure assigning the initial wavelength for communication between the service provider system and a new subscriber device installed in the local node. The wavelength initialization procedure is performed as a part of an activation procedure of the subscriber device. The wavelength initialization procedure is performed through signal transmission between a physical layer of the service provider system and a physical layer of the new subscriber device. The local node includes at least one optical multiplexer/demultiplexer. The wavelength initialization procedure is performed in the process of physical installation of the new subscriber device. [Reference numerals] (110) Building; (130) Subscriber device; (AA) Port 1:λ_1; (BB) Port 2:λ_2; (CC) Port 3:λ_3; (DD) Optical fiber; (EE) Multiplexed signal transmission; (FF) Optical distribution network

Abstract translation: 目的：提供一种用于波分复用无源光通信网络系统的链路建立方法，通过将光强度输入保持在低光纤上来提高光纤管理的稳定性。 构成：波分复用无源光通信网络系统的链路建立方法包括业务提供者系统，本地节点和多个用户设备。 链路建立方法包括：分配用于服务提供商系统和安装在本地节点中的新用户设备之间的通信的初始波长的波长初始化过程。 作为用户设备的激活过程的一部分来执行波长初始化过程。 波长初始化过程通过在服务提供商系统的物理层和新用户设备的物理层之间的信号传输来执行。 本地节点包括至少一个光复用器/解复用器。 在新的用户设备的物理安装过程中执行波长初始化过程。 （附图标记）（110）建筑物; （130）用户设备; （AA）端口1：λ_1; （BB）端口2：λ_2; （CC）端口3：λ_3; （DD）光纤; （EE）多路复用信号传输; （FF）配光网络

公开(公告)号：KR1020120070260A

公开(公告)日：2012-06-29

申请号：KR1020100131744

申请日：2010-12-21

Applicant: 한국전자통신연구원

Inventor： 조승현 ,  이한협 ,  이지현 ,  이종훈 ,  이은구 ,  정의석 ,  이상수

IPC: H04B10/2581

CPC classification number: H04J14/0282 ,  H04B10/506

Abstract: PURPOSE: A seed light module for wavelength division multiplexing-based passive optical networks and a method for the same are provided to increase the optical bandwidth of seed light by controlling the polarization of the seed light. CONSTITUTION: A reflector(250) reflects seed light from a light source generating part. A light attenuator(240) attenuates the intensity of the reflected seed light and outputs the attenuated seed light to the light source generating part. The light attenuator attenuates the intensity of seed light input from the light generating part and outputs the attenuated seed light to the reflector. A polarization controlling part(220) controls the polarized direction of the seed light generated from the light source generating part and outputs the controlled seed light to the reflector.

Abstract translation: 目的：提供一种用于基于波分复用的无源光网络的种子光模块及其方法，用于通过控制种子光的极化来增加种子光的光学带宽。 构成：反射器（250）反射来自光源产生部分的种子光。 光衰减器（240）衰减反射的种子光的强度，并将衰减的种子光输出到光源产生部分。 光衰减器衰减从光产生部分输入的种子光的强度，并将衰减的种子光输出到反射器。 偏振控制部分（220）控制从光源产生部分产生的种子光的偏振方向，并将受控种子光输出到反射器。

公开(公告)号：KR1020110071766A

公开(公告)日：2011-06-29

申请号：KR1020090128415

申请日：2009-12-21

Applicant: 한국전자통신연구원

Inventor： 이종훈 ,  조승현 ,  이한협 ,  이지현 ,  이은구 ,  정의석 ,  이상수

IPC: H04B10/2581 ,  H04B10/43

CPC classification number: H04B10/503 ,  G02B5/08 ,  G02B5/26 ,  G02B27/30

Abstract: PURPOSE: A seed photo-generating apparatus is provided to more efficiently create the seed light used in the passive optical subscriber network. CONSTITUTION: An optical amplifier(2) creates the amplified spontaneous emission and amplifies to output. A reflective filter(1) comprises a front side back mirror, a backside reflection mirro, and collimates. The reflective receives and filters the light outputted from the optical amplifier through the optical fiber terminal. The reflective filter outputs the light of the fixed wavelet through the optical fiber terminal. The light outputted from the reflective filter is amplified through the optical amplifier and outputted to the seed light.

Abstract translation: 目的：提供种子光产生装置，以更有效地创建在无源光用户网络中使用的种子光。 构成：光放大器（2）产生放大的自发辐射并放大到输出。 反射滤光片（1）包括前侧后视镜，背面反射镜和准直件。 反射镜通过光纤端子接收和滤除从光放大器输出的光。 反射滤光片通过光纤端子输出固定小波的光。 从反射滤光器输出的光通过光放大器放大并输出到种子光。

公开(公告)号：KR1020090018573A

公开(公告)日：2009-02-20

申请号：KR1020080076745

申请日：2008-08-06

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  이한협 ,  김봉태

IPC: H04B10/2581 ,  H04B10/27 ,  H04B10/00

CPC classification number: H04J14/0282 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0232 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0298 ,  H04J2014/0253

Abstract: An optical subscriber network system applying a wavelength division multiplexing technique to a TDM(Time Division Multiplexing)-PON(Passive Optical Network) and a service providing method are provided to enlarge a transmission distance between a central office and a terminal of a subscriber and to reduce a feeder optical filer line by applying WDM(Wavelength Division Multiplexing) transmission method between the central office and a remote node. An optical signal outputted from a wavelength multiplexing part(210) of an RN(Remote Node)(200) to a subscriber's device(300) is inputted to an optical circulation part(220). The optical signal circulates in the optical circulation part and is outputted to an optical amplifier(330) of the subscriber's device. The optical signal inputted to the optical amplifier of the subscriber's device is amplified and is inputted to the optical circulation part. The optical signal inputted to the optical circulation part is circulated and is outputted through an optical splitter(230). The optical splitter of the RN outputs the inputted optical signal to ONU(Optical Network Unit)s of M. Optical signals outputted from ONUs of M are merged in the optical splitter of the RN and is inputted to the optical circulation part of the RN. The optical signal inputted to the optical circulation part is circulated and is outputted to a wavelength converter(320) of the subscriber's device(300). The optical signal inputted to the wavelength converter is converted to the designated optical wavelength and inputted to the optical circulation part. The optical signal re-inputted to the optical circulation part is circulated and is outputted to the designated port of the wavelength multiplexing part.

Abstract translation: 提供了将波分复用技术应用于TDM（时分多路复用）-PON（被动光网络）和服务提供方法的光用户网络系统，以扩大中心局与用户终端之间的传输距离， 通过在中心局和远程节点之间应用WDM（波分复用）​​传输方法，减少馈线光纤线路。 从RN（远程节点）（200）的波长复用部分（210）向用户设备（300）输出的光信号被输入到光学循环部分（220）。 光信号在光循环部分中循环并被输出到用户设备的光放大器（330）。 输入到用户装置的光放大器的光信号被放大并被输入到光循环部分。 输入到光循环部的光信号被循环并通过光分路器230输出。 RN的光分路器将输入的光信号输出到M的ONU（光网络单元）。从ONU的ONU分配的光信号合并在RN的分光器中，并被输入到RN的光循环部分。 输入到光循环部的光信号被循环并输出到用户装置（300）的波长转换器（320）。 输入到波长转换器的光信号被转换成指定的光波长并输入到光循环部分。 重新输入到光循环部的光信号被循环并被输出到波长复用部的指定端口。

公开(公告)号：KR1020050114891A

公开(公告)日：2005-12-07

申请号：KR1020040039985

申请日：2004-06-02

Applicant: 한국전자통신연구원

Inventor： 이한협 ,  이동한 ,  정희상 ,  김광준

IPC: H04B10/071 ,  H04B10/25 ,  H04B10/07

CPC classification number: H04B10/071 ,  G01M11/3145

Abstract: 광선로 감시 시스템 및 그 방법이 개시된다. OTDR은 감시광을 광선로에 입사한 후 감시광에 의해 발생하는 반사광 또는 역방향 산란광의 세기를 측정하여 광선로의 이상 유무를 감시한다. 광증폭부는 광선로에 입사된 감시광을 이득 고정된 광증폭기를 이용하여 증폭하며, 필터부는 광 증폭부에서 발생하는 역방향 자발 방출광 중 감시광의 파장대역 이외의 파장 대역 성분을 제거한다. 이로써, OTDR의 광선로 감시거리 확장을 위해 사용하는 광증폭기에서 발생하는 역방향 자발 방출광에 의한 OTDR의 성능 저하를 방지할 수 있다.

公开(公告)号：KR1020050045516A

公开(公告)日：2005-05-17

申请号：KR1020030079604

申请日：2003-11-11

Applicant: 한국전자통신연구원

Inventor： 이한협 ,  이동한 ,  정희상 ,  이현재

IPC: H04B10/291 ,  H04B10/25

CPC classification number: H04B10/296 ,  H01S3/0064 ,  H01S3/067 ,  H01S3/0677 ,  H01S3/094023 ,  H01S3/0941 ,  H01S3/1608

Abstract: 본 발명은 장파장 대역 광증폭기로 입력되는 신호의 광세기가 변화하거나 혹은 파장이 변화하더라도 이득을 일정하게 유지할 수 있도록 하여 안정된 광출력를 제공하기 위한 광증폭기에 관한 것으로, 입력 광신호를 증폭하는 증폭부; 및 상기 증폭부에서 발생된 역방향 ASE를 반사시켜 상기 광섬유로 재입사시키기 위한 ASE 반사부를 구비하여, 역방향 ASE를 EDF로 재입력 시켜 입력 광의 세기나 파장의 변화에도 무관하게 일정한 이득을 갖도록 할 수 있다.

公开(公告)号：KR1020050006614A

公开(公告)日：2005-01-17

申请号：KR1020030046491

申请日：2003-07-09

Applicant: 한국전자통신연구원

Inventor： 정희상 ,  이원경 ,  장순혁 ,  이현재 ,  주무정 ,  이한협 ,  이동한 ,  이용배

IPC: H01S3/00

CPC classification number: H01S3/06758 ,  H01S3/1301 ,  H01S3/302 ,  H01S2301/04

Abstract: PURPOSE: An apparatus and a method for compensating the gain spectrum in response to the temperature change of an optical amplifier and a long-wavelength band dispersion-compensating hybrid optical amplifier provided with the same are provided to easily compensate the change of gain spectrum in response to the temperature change by changing the intensity of the DCF pump. CONSTITUTION: An apparatus for compensating the gain spectrum in response to the temperature change of an optical amplifier includes a dispersion compensating fiber(DCF)(50), at least one pumping units(30-34), a first and a second temperature detection units(60,61) and a controller(70). The DCF is positioned between the first amplifying terminal and the second amplifying terminal to compensate the distribution of the optical signal outputted from the first amplifying terminal. The DCF performs the Raman amplification for the inputted pumping light. The pumping units supply the forward and backward pumping lights to the DCF. The first and the second temperature detection units detect the temperature changes of the detected first and the second amplifying terminals. And, the controller controls the intensity of the pumping light in response to the temperature changes of the detected first and the second amplifying terminals.

Abstract translation: 目的：提供一种用于补偿响应于光放大器的温度变化的增益谱的装置和方法以及具有该放大器的长波长带色散补偿混合光放大器，以便容易地补偿响应中的增益谱的变化 通过改变DCF泵的强度来改变温度。 构成：用于响应于光放大器的温度变化补偿增益谱的装置包括色散补偿光纤（DCF）（50），至少一个泵送单元（30-34），第一和第二温度检测单元 （60,61）和控制器（70）。 DCF位于第一放大端和第二放大端之间，以补偿从第一放大端输出的光信号的分布。 DCF对输入的泵浦光进行拉曼放大。 泵送单元向DCF提供前向和后向泵浦灯。 第一和第二温度检测单元检测检测到的第一和第二放大端子的温度变化。 并且，控制器响应于检测到的第一和第二放大端子的温度变化来控制泵浦光的强度。

公开(公告)号：KR1020160011088A

公开(公告)日：2016-01-29

申请号：KR1020140092126

申请日：2014-07-21

Applicant: 한국전자통신연구원

Inventor： 이한협 ,  이상수

IPC: H04J14/02 ,  H04J14/08

CPC classification number: H04J14/0221 ,  H04J14/0282 ,  H04Q11/0005 ,  H04Q11/0067 ,  H04Q2011/0016

Abstract: 본발명에따른버스트모드광 증폭장치는이득고정을위한이득포화신호를생성하는이득포화신호생성부, 수신된입력광신호및 이득포화신호를파장분할다중화(Wavelength Division Multiplexing) 하는파장다중화부및 파장다중화된입력광신호및 이득포화신호를동시에증폭하여 1차출력광신호를생성하는광증폭부를포함한다. 그리고, 및이득포화신호생성부의이득포화신호생성을위한처리시간을고려하여수신된입력광신호의시간을지연시켜, 상기입력광신호및 상기이득포화신호를동기화하는시간지연부를더 포함할수 있다.

Abstract translation: 根据本发明的用于放大突发模式光的装置包括：增益饱和信号产生单元，用于产生用于固定增益的增益饱和信号; 波长复用单元，用于对接收的输入光信号和增益饱和信号进行波分复用; 以及光放大单元，用于通过同时放大波分复用的输入光信号和增益饱和信号来产生第一输出光信号。 该装置还可以包括：延迟单元，用于通过考虑用于产生增益饱和信号产生单元的增益饱和信号的处理时间来延迟所接收的输入光信号的时间，并使输入光信号和增益饱和信号同步。

公开(公告)号：KR1020150051856A

公开(公告)日：2015-05-13

申请号：KR1020140027409

申请日：2014-03-07

Applicant: 한국전자통신연구원

Inventor： 이지현 ,  이한협 ,  이상수 ,  이정찬

IPC: H04J14/02 ,  H04B10/50

Abstract: 본발명은수동형광통신네트워크(Passive Optical Network, PON) 시스템에서파장채널튜닝시간측정을통한튜너블디바이스의클래스구분방법및 그장치에관한것으로, 보다구체적으로는수동형광통신네트워크의 OLT와 ONU를구성하는각 튜너블디바이스에대해서파장채널설정, 변경, 초기화, 활성화, 링크설정, 변경또는이들의조합을포함한파장채널튜닝이필요한경우, 상기튜너블디바이스의파장채널튜닝시간을측정하여, 상기측정된튜닝시간을바탕으로각 튜너블디바이스의클래스를구분하는방법과그 장치를제공하는것이다. 이방법과장치를통해서특정클래스의튜너블디바이스에대한선택적인조합으로 OLT와 ONU를구성함으로써, 최적의구성및 설치비용, 운용및 유지보수비용, 확장성, 절전또는이들의조합을만족하도록원하는 PON 시스템(1)을구축할수 있는효과가있다.

Abstract translation: 本发明涉及一种通过测量无源光网络（PON）系统中的波长信道调谐时间对可调谐装置的类进行分类的方法及其装置。 更具体地，本发明提供了一种方法和装置，其中当包括波长信道设置，改变，初始化，激活，链路设置，改变等的波长信道调谐时，该方法能够测量可调谐器件的波长信道调谐时间， 或其组合相对于用于配置PON的OLT和ONU的每个可调谐设备需要，并且基于测量的调谐时间对每个可调谐设备的类别进行分类。 因此，OLT和ONU配置有特定类别的可调谐设备的选择性组合，从而具有实现期望满足最佳配置和安装成本，操作和维护成本，可扩展性，省电的PON系统（1）的效果 ，或其组合。