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1. 发明授权

US06282343B1 Optical coupler and method of manufacturing the same 失效
标题翻译：光耦合器及其制造方法
公开(公告)号：US06282343B1
公开(公告)日：2001-08-28
申请号：US09440931
申请日：1999-11-16
申请人： Dug-bong Kim , Jung-hwan Cho , Sang-yun Yi , Tae-hyung Rhee
发明人： Dug-bong Kim , Jung-hwan Cho , Sang-yun Yi , Tae-hyung Rhee
IPC分类号： G02B642
CPC分类号： G02B6/125
摘要： An optical coupler and a method of manufacturing the same are provided. The optical coupler includes an input optical waveguide and N output optical waveguides, and divides an optical signal received from the input optical waveguide into N optical signals. The optical coupler further includes a plurality of Y-junction optical waveguide modules configured in m stages, for branching the received optical signal into two optical signals at each stage, and a plurality of curved optical waveguides alternately connected to the Y-junction optical waveguide modules, at least one curved optical waveguide connected between Y-junction optical waveguide modules in the m-th stage and the output optical waveguides, wherein when the guiding direction of the optical signal is set to be the longitudinal axis, and the junction between the input optical waveguide and the first-stage Y-junction optical waveguide module is set to be the starting point, the positions and sizes of the Y-junction optical waveguide modules and the curved optical waveguides are determined in order to minimize the longest path among N paths ranging from the starting point to each of the output optical waveguides. An optical coupler is manufactured using Y-junction optical waveguide modules and connection optical waveguide modules, such that various Y-junction optical waveguide structures can be designed. Also, the degree of freedom upon layout of modules is increased, so that design of the optical coupler is easy.
摘要翻译：提供一种光耦合器及其制造方法。光耦合器包括输入光波导和N输出光波导，并将从输入光波导接收的光信号分成N个光信号。该光耦合器还包括多个以m级配置的Y结光波导模块，用于将接收到的光信号在每一级分支成两个光信号，并且多个弯曲光波导交替地连接到Y结光波导模块，连接在第m级的Y结光波导模块和输出光波导之间的至少一个弯曲光波导，其中当光信号的引导方向被设置为纵向轴线时，以及输入端光波导和第一级Y结光波导模块被设置为起点，确定Y结光波导模块和弯曲光波导的位置和大小，以使N路径中的最长路径最小化从起始点到每个输出光波导。使用Y结光波导模块和连接光波导模块制造光耦合器，从而可以设计各种Y结光波导结构。此外，模块布局时的自由度增加，使得光耦合器的设计容易。

2. 发明授权

US06268949B1 Optical intensity modulator and fabrication method using an optical waveguide having an arc shaped path 失效
标题翻译：光强度调制器和使用具有弧形路径的光波导的制造方法
公开(公告)号：US06268949B1
公开(公告)日：2001-07-31
申请号：US09344125
申请日：1999-06-24
申请人： Jung-hwan Cho , Dug-bong Kim , Sang-yun Yi , Tae-hyung Rhee
发明人： Jung-hwan Cho , Dug-bong Kim , Sang-yun Yi , Tae-hyung Rhee
IPC分类号： G02F103
CPC分类号： G02F1/011
摘要： In an optical intensity modulator, and a fabrication method thereof, the optical intensity modulator includes a substrate made of a predetermined material, an arc shaped optical waveguide formed on the substrate, and an electrode formed on the optical waveguide such that the electrode is in alignment with the optical waveguide, the refractive index of the optical waveguide being changed in accordance with an intensity of an electric field applied to the electrode, and an optical wave passing a predetermined location of the optical waveguide being radiated into the substrate due to the changed refractive index. Accordingly, a large modulation depth can be obtained from only a small refractive index variation by using the radiation loss characteristics of the arc shaped waveguide.
摘要翻译：在光强度调制器及其制造方法中，光强度调制器包括由预定材料制成的基板，形成在基板上的弧形光波导，以及形成在光波导上的电极，使得电极对准利用光波导，光波导的折射率根据施加到电极的电场的强度而改变，并且通过光波导的预定位置的光波由于折射率的变化而被辐射到衬底中指数。因此，通过使用弧形波导的辐射损耗特性，可以仅从小的折射率变化获得大的调制深度。

3. 发明授权

US06201913B1 Integrated optical power splitter and manufacturing method therefor 失效
标题翻译：集成光功率分配器及其制造方法
公开(公告)号：US06201913B1
公开(公告)日：2001-03-13
申请号：US09186360
申请日：1998-11-05
申请人： Sang-yun Yi , Jung-hwan Cho , Woo-hyuk Jang , Tae-hyung Rhee
发明人： Sang-yun Yi , Jung-hwan Cho , Woo-hyuk Jang , Tae-hyung Rhee
IPC分类号： G02B626
CPC分类号： G02B6/125 , G02B6/2804 , G02B2006/12147 , G02B2006/1215
摘要： In an optical power splitter for splitting input light into N equal optical waves, and a manufacturing method therefor, a main waveguide and (N−1) branched waveguides are arranged on one side or both sides of the main waveguide. The main waveguide and the (N−1) branched waveguides form a directional coupler. In each of the directional couplers, the branched waveguide has an appropriate phase mismatch, a proper coupling coefficient, and a suitable coupling length to output 1/N of input optical power in the main waveguide. In the optical power splitter, when the main waveguide is semicircular, a circular substrate can be effectively used when the optical power splitter is manufactured.
摘要翻译：在用于将输入光分成N个相等光波的光功率分配器及其制造方法中，主波导和（N-1）分支波导布置在主波导的一侧或两侧。主波导和（N-1）分支波导形成定向耦合器。在每个定向耦合器中，分支波导具有适当的相位失配，适当的耦合系数和合适的耦合长度以输出主波导中的输入光功率的1 / N。在光功率分配器中，当主波导是半圆形时，当制造光功率分配器时，可以有效地使用圆形基板。

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