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    • 1. 发明申请
    • Optical module
    • 光模块
    • US20060115197A1
    • 2006-06-01
    • US11148906
    • 2005-06-09
    • Kwang ChoiJong LeeYong ChungYoung KangJong MoonJe Kim
    • Kwang ChoiJong LeeYong ChungYoung KangJong MoonJe Kim
    • G02F1/035
    • G02F1/0356
    • Provided is an optical module including a microstrip line, a traveling wave type optical device positioned in the end of the microstrip line, and at least one balanced open stub connected to the microstrip line for the impedance matching at a specific frequency such as 40 GHz and 60 GHz. For the fine tuning, laser trimming can be applied to the stub. A transition region is formed between the optical device and the microstrip line. A termination resistor is formed to face the microstrip line with the optical device therebetween. A bandwidth can be controlled at a specific frequency by adjusting a number of the stubs or a value of the termination resistor.
    • 提供了一种光学模块,其包括微带线,位于微带线的端部的行波型光学器件和连接到微带线的至少一个平衡的开路短路,用于在特定频率例如40GHz的阻抗匹配,以及 60 GHz。 对于微调,激光修剪可以应用于存根。 在光学器件和微带线之间形成过渡区域。 形成终端电阻器,以便在其间具有光学器件来面对微带线。 可以通过调整短路的数量或终端电阻的值来控制带宽在特定频率。
    • 2. 发明申请
    • Optical module and optical module package
    • 光模块和光模块封装
    • US20070047878A1
    • 2007-03-01
    • US11450743
    • 2006-06-08
    • Kwang ChoiYong ChungYoung KangDong JunJe KimJong Moon
    • Kwang ChoiYong ChungYoung KangDong JunJe KimJong Moon
    • G02B6/36G02B6/12
    • G02F1/0121G02B6/4201G02B6/4279H01L2224/48091H01L2924/3011H01L2924/00014H01L2924/00
    • Provided is an optical module used in a communication system employing a radio over fiber (ROF) technology delivering a radio frequency (RF) signal through an optical fiber. The optical module includes: an optical device; a signal line for transporting a radio frequency (RF) signal input from an external circuit to the optical device; and a resistor separately disposed from the signal line and having one end connected with the optical device, wherein the input impedance seen from the signal line is matched by the resistor. A bias voltage supplied to operate the optical device is applied through an inductor connected to the signal line between the optical device and a filter. Here, the filter formed by a pattern of the signal line prevents the bias voltage from being supplied to the external circuit. In order to amplify the RF signal input from the external circuit, an amplifier may be connected between the external circuit and the filter.
    • 提供了一种用于通过光纤传送射频(RF)信号的无线电光纤(ROF)技术的通信系统中的光学模块。 光学模块包括:光学装置; 用于将从外部电路输入的射频(RF)信号传送到光学装置的信号线; 以及与信号线分开设置并且具有与光学装置连接的一端的电阻,其中从信号线看到的输入阻抗由电阻器匹配。 提供用于操作光学器件的偏置电压通过连接到光学器件和滤光器之间的信号线的电感器施加。 这里,由信号线的图案形成的滤波器防止偏置电压被提供给外部电路。 为了放大从外部电路输入的RF信号,可以在外部电路和滤波器之间连接放大器。
    • 3. 发明申请
    • Electro-absorption optical modulator having multiple quantum well
    • 具有多个量子阱的电吸收光学调制器
    • US20050068601A1
    • 2005-03-31
    • US10743463
    • 2003-12-23
    • Young KangJe KimJi LimSung Kim
    • Young KangJe KimJi LimSung Kim
    • G02F1/313G02F1/017G02F1/01
    • B82Y20/00G02F1/01708G02F2001/0175
    • Disclosed is an electro-absorption optical modulator using a semiconductor device. The optical modulator makes use of a change in light absorption caused by displacement of an absorption curve depending on a bias voltage applied to the device. Here, a level of the light absorption depending on the bias voltage is expressed as a transfer function of output light to the applied bias, and the transfer function has a non-linear profile due to a characteristic of a material. Unlike signal modulation of a digital optical communication system, an analog optical transmission system can be subjected to deterioration in performance, because the non-linear characteristic of the transfer function for the optical modulator generates signal distortion when an electrical signal is converted into an optical signal. The typical optical modulator has an absorption layer constituted of quantum wells having the same width. However, the inventive optical modulator has the absorption layer formed by the combination of quantum wells having a width different form each other, thus having excellent linearity.
    • 公开了使用半导体器件的电吸收光调制器。 光调制器利用由施加到器件的偏置电压引起的吸收曲线位移引起的光吸收变化。 这里,根据偏置电压的光吸收水平被表示为输出光到施加偏压的传递函数,并且传递函数由于材料的特性而具有非线性轮廓。 与数字光通信系统的信号调制不同,模拟光传输系统由于光调制器的传递函数的非线性特性在将电信号转换成光信号时会产生信号失真 。 典型的光调制器具有由具有相同宽度的量子阱构成的吸收层。 然而,本发明的光调制器具有通过量子阱的组合形成的吸收层,该量子阱具有彼此不同的宽度,因此具有优异的线性。