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    • 112. 发明公开
    • 파장-이동된 양방향 파장분할다중 광네트워크
    • 波长变化的双向波长多路复用光网络
    • KR1020130116778A
    • 2013-10-24
    • KR1020120082985
    • 2012-07-30
    • 한국전자통신연구원
    • 정종술김현수박미란최병석권오균
    • H04J14/02H04B10/25
    • PURPOSE: A wavelength-shifted bidirectional wavelength division multiplexing optical network is provided to fundamentally block signal distortion due to Rayleigh backscattering which can be generated when using one optical line and the reflected light of optical components, thereby providing a high-quality optical network. CONSTITUTION: A wavelength-shifted bidirectional wavelength division multiplexing (WDM) optical network comprises an optical line terminal (OLT) (310) and a remote node (RN) (330). A first optical circulator (315) of the OLT transmits a downlink (DL) WDM optical signal wavelength-multiplexed by a first standard-type wavelength multiplexing/demultiplexing unit (313) through an optical fiber (320) for optical line or transmits a wavelength-multiplexed uplink (UL) WDM optical signal transmitted through the optical fiber to a first wavelength shift-type wavelength multiplexing/demultiplexing unit (314). A second optical circulator (331) of the RN transmits an UL WDM optical signal wavelength-multiplexed by a second wavelength shift-type wavelength multiplexing/demultiplexing unit (332) through the optical fiber or transmits a wavelength-multiplexed DL WDM optical signal transmitted through the optical fiber to a second standard-type wavelength multiplexing/demultiplexing unit (333).
    • 目的:提供一种波长偏移的双向波分复用光网络,从根本上阻止了当使用一条光线路和光学部件的反射光时可产生的瑞利后向散射信号失真,从而提供高质量的光网络。 构成:波长偏移双向波分复用(WDM)光网络包括光线路终端(OLT)(310)和远程节点(RN)(330)。 OLT的第一光环行器(315)通过用于光线路的光纤(320)发射由第一标准型波长多路复用/解复用单元(313)波分复用的下行链路(DL)WDM光信号,或者发送波长 通过光纤传输的多路复用上行链路(UL)WDM光信号到第一波长移位型波分复用/解复用单元(314)。 RN的第二光环行器(331)通过光纤发送由第二波长偏移型波长多路复用/解复用单元(332)波分复用的UL WDM光信号,或者发送通过光纤传输的波分复用DL WDM光信号 光纤到第二标准型波长复用/解复用单元(333)。
    • 113. 发明公开
    • 파장가변 레이저 모듈
    • 可控激光模块
    • KR1020130104541A
    • 2013-09-25
    • KR1020120026122
    • 2012-03-14
    • 한국전자통신연구원
    • 윤기홍권오균오수환김기수최병석김현수
    • H01S3/10H01S3/13
    • H01S3/10H01S3/1055H01S5/0612H01S5/142H01S5/4006
    • PURPOSE: A tunable laser module is provided to improve an output characteristic by using two arms of a Mach-Zehnder light modulator for two output terminals. CONSTITUTION: A tunable laser module comprises a light gain area unit (401), a light distribution unit (402), a light coupling unit (407), and a light amplifying unit (408). The light distribution unit separates a light signal which is output from a light gain area unit. Two comb reflection units (403, 404) reflect one part of the light signal which is separated by the light distribution unit, and transmits the other part of the separated signal. The light coupling unit combines light signals whose phases are changed by two phase units (405, 406). The light amplifying unit amplifies the light signal which is combined by the light coupling unit. The light gain area unit oscillates laser by totally reflecting the light signal which are reflected by the two comb reflection unit.
    • 目的:提供可调谐激光模块,通过使用两个输出端子的马赫 - 曾德尔光调制器的两个臂来提高输出特性。 构成:可调激光模块包括光增益区单元(401),配光单元(402),光耦合单元(407)和光放大单元(408)。 配光单元分离从光增益区域单元输出的光信号。 两个梳状反射单元(403,404)反射由光分布单元分离的光信号的一部分,并传输分离信号的另一部分。 光耦合单元组合相位相变的两个相位单元(405,406)的光信号。 光放大单元放大由光耦合单元组合的光信号。 光增益区单元通过全反射由两个梳状反射单元反射的光信号来振荡激光。
    • 116. 发明公开
    • 파장 가변 레이저 광원 모듈
    • 可控激光模块
    • KR1020110073232A
    • 2011-06-29
    • KR1020100088472
    • 2010-09-09
    • 한국전자통신연구원
    • 박미란권오균최병석오대곤
    • H01S5/024H01S5/183
    • H01S5/02438H01S5/0261H01S5/18313H01S5/18386
    • PURPOSE: A wavelength variable laser module is provided to uniformly vary wavelengthes oscillated from a laser array by changing the temperature of the laser array integrated in a temperature controller. CONSTITUTION: A laser array(10) oscillates an optical signal with a plurality of different oscillating wavelengths. A temperature controller(20) changes the temperature of the laser array. The temperature controller includes a thermoelectric element which heats or cools the laser array. An optical integrated element(80) modulates or amplifies the optical signal at a lateral side opposite to the temperature controller of the laser array. The optical integrated element includes a multimode interference coupler(40), an optical modulator(50), and a semiconductor optical amplifier(60).
    • 目的:提供波长可变激光模块,通过改变集成在温度控制器中的激光器阵列的温度来均匀地改变从激光器阵列振荡的波长。 构成:激光阵列(10)振荡具有多个不同振荡波长的光信号。 温度控制器(20)改变激光器阵列的温度。 温度控制器包括加热或冷却激光器阵列的热电元件。 光学集成元件(80)在与激光器阵列的温度控制器相对的横向侧上调制或放大光信号。 光集成元件包括多模干涉耦合器(40),光调制器(50)和半导体光放大器(60)。
    • 117. 发明公开
    • 광증폭기
    • 光放大器
    • KR1020100073968A
    • 2010-07-01
    • KR1020090080500
    • 2009-08-28
    • 한국전자통신연구원
    • 최병석오대곤권오균김동철김기수김현수
    • G02B6/12
    • PURPOSE: An optical amplifier according to the present invention is provided to obtain broad frequency bandwidth even in the low current. CONSTITUTION: A manual waveguide area(341) is inputted with an incident optical signal. The mode is controlled. An active waveguide area(342) is connected to the passive waveguide domain. The concentration of the carrier is varied by the applied current. The gain of the optical signal passing through the passive waveguide area is modulated. The active waveguide area uses the resonance phenomenon through controlling the internal loss.
    • 目的:提供根据本发明的光放大器,即使在低电流下也能获得宽频带宽。 构成:手动波导区域(341)被输入入射光信号。 模式被控制。 有源波导区域(342)连接到无源波导域。 载体的浓度由所施加的电流而变化。 通过无源波导区域的光信号的增益被调制。 有源波导区域通过控制内部损耗来应用共振现象。
    • 120. 发明授权
    • 다채널 장파장 수직공진 표면방출 레이저 어레이 및 그제조방법
    • 다채널장파장수직공진표면방이저어레이및그제조방
    • KR100460839B1
    • 2004-12-09
    • KR1020020002534
    • 2002-01-16
    • 한국전자통신연구원
    • 유병수김종희한원석권오균주영구신재헌
    • H01S5/183
    • PURPOSE: A multi-channel long wavelength VCSEL array and a fabricating method thereof are provided to form constantly an interval of a laser oscillation wavelength by controlling a resonant interval. CONSTITUTION: A multi-channel long wavelength VCSEL array includes a semiconductor substrate(10), a bottom mirror(20), an active region(30), a current limit layer(40), a superlattice control layer(50), and a top mirror(60). The bottom mirror is formed on the semiconductor substrate. The active region is formed on the bottom mirror. The current limit layer is formed on the active region in order to limit efficiently the current and enhance the efficiency of the heat transfer. The superlattice control layer is formed on the current limit layer in order to control an interval of laser oscillation wavelength. The top mirror is formed on the superlattice control layer.
    • 目的:提供多通道长波长VCSEL阵列及其制造方法,以通过控制谐振间隔恒定地形成激光振荡波长的间隔。 一种多通道长波长VCSEL阵列,包括半导体衬底(10),底部反射镜(20),有源区(30),限流层(40),超晶格控制层(50)和 顶部镜子(60)。 底部反射镜形成在半导体衬底上。 有源区形成在底部反射镜上。 电流限制层形成在有源区域上,以便有效地限制电流并提高传热效率。 在限流层上形成超晶格控制层,以控制激光振荡波长的间隔。 顶部镜子形成在超晶格控制层上。