Fabrication method of an epilayer structure InGaAsP/InP ridge waveguide phase modulator with high phase modulation efficiency
    13.
    发明授权
    Fabrication method of an epilayer structure InGaAsP/InP ridge waveguide phase modulator with high phase modulation efficiency 失效
    具有高相位调制效率的外延层结构InGaAsP / InP脊波导相位调制器的制造方法

    公开(公告)号:US07037739B2

    公开(公告)日:2006-05-02

    申请号:US10751858

    申请日:2004-01-06

    IPC分类号: H01L21/00

    摘要: A fabrication method of an epilayer structure for InGaAsP/InP ridge waveguide phase modulator with high phase modulation efficiency. It relates to a P-p-n-N InGaAsP/InP ridge waveguide phase modulator fabricated to be that the phase change of the TE-mode is linearly proportional to the reverse bias voltage at 1.55 μm wavelength. A method for fabricating an epilayer structure for achieving the optical confinement in the vertical direction of an InGaAsP/InP waveguide phase modulator, characterized by comprising the steps of: forming a first cladding layer of N-InP on an N+-InP substrate; forming a first waveguide layer of n-InGaAsP and a second waveguide layer of p-InGaAsP in sequence on the first cladding layer; forming a second cladding layer of P-InP and a third cladding layer of P-InP in sequence on the second waveguide layer; and forming an electrode layer of p+InGaAs on the third cladding layer.

    摘要翻译: 具有高相位调制效率的InGaAsP / InP脊波导相位调制器的外延层结构的制造方法。 它涉及一种P-p-n-N InGaAsP / InP脊波导相位调制器,其制造为TE模式的相变与1.55mum波长处的反偏压成线性比例。 一种用于制造用于实现InGaAsP / InP波导相位调制器的垂直方向上的光限制的外延层结构的方法,其特征在于包括以下步骤:在N + 1上形成N-InP的第一包层, SUP> -InP底物; 在第一包层上依次形成n-InGaAsP的第一波导层和p-InGaAsP的第二波导层; 在第二波导层上依次形成P-InP的第二包层和P-InP的第三包层; 以及在所述第三覆层上形成p + + InGaAs的电极层。

    Method of manufacturing printed circuit board having embedded resistors
    15.
    发明授权
    Method of manufacturing printed circuit board having embedded resistors 失效
    具有嵌入式电阻器的印刷电路板的制造方法

    公开(公告)号:US08166653B2

    公开(公告)日:2012-05-01

    申请号:US12801870

    申请日:2010-06-29

    IPC分类号: H01K3/10

    摘要: A method of manufacturing a printed circuit board (PCB) having embedded resistors, including providing a PCB on which internal layer circuit patterns, including electrode pads, are formed; layering insulating layers on the PCB; forming first via holes on the electrode pads and simultaneously forming second via holes at predetermined locations on the internal layer circuit patterns; forming contact pads for connecting the electrode pads with resistors by filling the first via holes with oxidation-resistant conductive material and flattening the oxidation-resistant conductive material; forming the resistors so that ends of each resistor are connected to two respective contact pads, which are spaced apart from each other; forming circuit patterns on the PCB, in which the second via holes are formed; and layering insulting layers on the PCB having the formed circuit patterns, and forming external layer circuit patterns.

    摘要翻译: 一种具有嵌入式电阻器的印刷电路板(PCB)的制造方法,其特征在于,提供形成有包含电极焊盘的内层电路图案的PCB; 在PCB上分层绝缘层; 在电极焊盘上形成第一通孔并同时在内层电路图形上的预定位置形成第二通孔; 形成用于通过用耐氧化导电材料填充第一通孔并使抗氧化导电材料变平的方式将电极焊盘与电阻器连接的接触焊盘; 形成电阻器,使得每个电阻器的端部连接到彼此间隔开的两个相应的接触焊盘; 在PCB上形成电路图案,其中形成第二通孔; 以及在PCB上具有形成的电路图案的层叠绝缘层,以及形成外部层电路图案。