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    • 11. 发明授权
    • Apparatus for spectral encoding and decoding of femtosecond optical
pulses
    • 用于飞秒光脉冲频谱编码和解码的装置
    • US5907421A
    • 1999-05-25
    • US619090
    • 1996-03-20
    • Warren S. WarrenJune-Koo RheeHisashi Kobayashi
    • Warren S. WarrenJune-Koo RheeHisashi Kobayashi
    • H04B10/14H04B10/04
    • H04B10/676
    • A DPSK communication system employs an optical signal which comprises plural, coherent, optical frequencies, each optical frequency positioned within a range of frequencies (i.e., a "frequency slot"). The optical signal comprises plural frequency slots, with the wavefront in each time segment of each frequency slot being phase modulated in accordance with data signals. Plural frequency slots are transmitted "in parallel", in each of a plurality of succeeding time segments. A demodulator includes first and second optical paths, the first component of the optical signal directed onto the first optical path and a second component directed onto the second optical path. A modulator is positioned in at least one of the optical paths and is responsive, during a time segment, to a first applied control signal, to alter the phase, and thus the frequency, of the first component by approximately one frequency slot. At the output of the first and second optical paths, an optical coupler interferes the first component and the second component so as to enable constructive and destructive interference therebetween in accordance with respective phase modulations thereof.
    • DPSK通信系统采用包括多个相干光频率的光信号,每个光频率位于频率范围内(即,“频率槽”)。 光信号包括多个频率时隙,每个时隙的每个时间段中的波阵面根据数据信号进行相位调制。 在多个后续时间段中的每一个中,“并行地”发送多个时隙。 解调器包括第一和第二光路,光信号的第一分量被引导到第一光路上,第二分量指向第二光路。 调制器位于至少一个光路中,并且在时间段期间响应于第一施加的控制信号,以将第一分量的相位以及因此的频率改变大约一个频率槽。 在第一和第二光路的输出处,光耦合器干扰第一部件和第二部件,以便根据其相应的相位调制来实现它们之间的建构性和相消干涉。
    • 16. 发明申请
    • Method of creating address forwarding table in ethernet ring network
    • 以太网环网中创建地址转发表的方法
    • US20080317030A1
    • 2008-12-25
    • US12009819
    • 2008-01-22
    • June Koo RheeJin Sung Im
    • June Koo RheeJin Sung Im
    • H04L12/28
    • H04L12/427
    • Provided is a method of creating an address forwarding table in an Ethernet ring network. The method includes the steps of: broadcasting, at each Ethernet node, a ring learning frame having information for measuring cost in the frame's payload in both directions; and receiving, at each Ethernet node, two ring learning frames transferred from different Ethernet nodes and recording a ring learning frame containing information having the minimum cost in the Ethernet node's address forwarding table. Accordingly, by creating an intelligent address forwarding table, it is possible to efficiently prevent a loop without conventionally using a closed loop, and to rapidly transfer a frame through an optimal path.
    • 提供了一种在以太环网中创建地址转发表的方法。 该方法包括以下步骤:在每个以太网节点处广播具有用于在两个方向上测量帧有效载荷中的成本的信息的环学习帧; 并且在每个以太网节点处接收从不同以太网节点传送的两个环学习帧,并且在以太网节点的地址转发表中记录包含具有最小成本的信息的环学习帧。 因此,通过创建智能地址转发表,可以有效地防止循环而不常规地使用闭环,并且通过最佳路径快速传送帧。
    • 18. 发明申请
    • WAVELENGTH CONVERTER FOR GENERATING WAVELENGTH TUNABLE LASER OPTICAL SOURCE IN ITSELF
    • 波长变换器,用于产生波长范围内的激光光源
    • US20060119929A1
    • 2006-06-08
    • US11296332
    • 2005-12-08
    • Young-kwang SeoHyun-chin KimHyun-surk RyuJune-koo RheeKeun-joo ParkChun-ju Youn
    • Young-kwang SeoHyun-chin KimHyun-surk RyuJune-koo RheeKeun-joo ParkChun-ju Youn
    • G02F1/365
    • H01S5/50G02F2/004G02F2002/006H01S5/005H01S5/5027H01S5/509
    • A wavelength converter for generating a wavelength tunable laser optical source in itself is disclosed. The wavelength converter includes a first semiconductor optical amplifier for generating an optical noise, generating and outputting a first optical source by amplifying the generated optical noise if an external current is applied, first and second distributed Bragg reflectors for reflecting only a component of a specified wavelength range among components of the optical noise and applying the reflected component to the first semiconductor optical amplifier, and a second semiconductor optical amplifier for receiving an optical source divided from the optical source reflected by and outputted from the first distributed Bragg reflector and an input data optical source, generating and outputting a second optical source by changing a phase of the divided optical source according to a digital signal from the input data optical source. The first and second optical sources outputted from the first and second semiconductor optical amplifiers are added together, and a signal of which the wavelength is converted through either a constructive interference or a destructive interference of the added first and second optical sources is outputted.
    • 本发明公开了一种用于产生波长可调激光光源的波长转换器。 波长转换器包括用于产生光学噪声的第一半导体光放大器,如果施加了外部电流则通过放大产生的光学噪声来产生和输出第一光源;第一和第二分布式布拉格反射器,仅用于仅反射指定波长的分量 光学噪声的分量之间的范围,并将反射分量施加到第一半导体光放大器,以及第二半导体光放大器,用于接收从第一分布式布拉格反射器反射并从其输出的光源划分的光源和输入数据光 源,通过根据来自输入数据光源的数字信号改变分割光源的相位来产生和输出第二光源。 从第一和第二半导体光放大器输出的第一和第二光源相加在一起,并且输出通过相加的第一和第二光源的相长干涉或相消干涉而波长转换的信号。