会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • Starved source diffusion for avalanche photodiode
    • 用于雪崩光电二极管的饥饿源扩散
    • US20060081874A1
    • 2006-04-20
    • US10966491
    • 2004-10-15
    • Daniel FrancisRashit NabievRichard RatowskyDavid YoungSunil ThomasRoman Dimitrov
    • Daniel FrancisRashit NabievRichard RatowskyDavid YoungSunil ThomasRoman Dimitrov
    • H01L31/109
    • H01L31/107H01L31/03529H01L31/18Y02E10/50
    • Starved source diffusion methods for forming avalanche photodiodes (APDs) are provided for controlling the edge effect. The edge effect is controlled by reducing edge gain near the edges of an APD active region. This is accomplished by creating a sloped diffusion front near the edges of the active region. The sloped diffusion front is advantageously formed in a single doping step by using a patterned mask during doping. The patterned mask reduces the depth to which dopants diffuse in areas where it only partly covers the underlying layer. By covering more of the underlying layer nearer the edge and progressively less towards the center, the sloped diffusion front is formed. The shallower diffusion depth near the edge reduces the edge gain, and therefore the edge effect. As a result, an APD to fiber misalignment is less likely, and possibility of edge breakdown is greatly reduced.
    • 用于形成雪崩光电二极管(APD)的饥饿源扩散方法用于控制边缘效应。 边缘效应通过减少APD有效区域边缘附近的边缘增益来控制。 这是通过在活动区域​​的边缘附近创建倾斜的扩散前端来实现的。 倾斜的扩散前端有利地通过在掺杂期间使用图案化掩模在单个掺杂步骤中形成。 图案化掩模减少掺杂剂在其仅部分覆盖下层的区域中扩散的深度。 通过覆盖更靠近边缘的下层,并逐渐向中心倾斜,形成倾斜的扩散前沿。 靠近边缘的较浅的扩散深度降低了边缘增益,因此降低了边缘效应。 结果,APD对光纤的未对准不太可能,并且边缘击穿的可能性大大降低。
    • 5. 发明授权
    • Single mode laser with a passive antiguide region
    • 单模激光器具有被动反射区域
    • US5539759A
    • 1996-07-23
    • US317393
    • 1994-10-04
    • Constance J. Chang-HasnainYongan WuRashit Nabiev
    • Constance J. Chang-HasnainYongan WuRashit Nabiev
    • H01S5/02H01S5/183H01S5/20H01S3/098
    • H01S5/18355H01S2301/166H01S2301/18H01S5/0215H01S5/18352H01S5/205H01S5/222
    • A single mode laser with a laser cavity consisting of an active medium and a first and second reflectors with an antiguide region or layer having a high refractive index positioned adjacent to the laser cavity to bleed off higher order lasing modes and preventing them from attaining the lasing condition. Specifically, light belonging to higher order modes leaks or bleeds into the antiguide region from the laser medium and from the first and second reflectors. When spacers for selecting the desired wavelength of laser light are provided, the light travelling through them leaks into the antiguide layer as well.Optimization of the bleeding of higher order modes into the passive antiguide region can be achieved by adjusting a taper angle of the laser cavity. Furthermore, by adjusting the ratio of the equivalent refractive index of the laser cavity and the passive antiguide region single mode operation at high current levels can be realized for apertures as large as 30 .mu.m. In addition, such lasers exhibit a repeatable and predetermined direction of polarization, most commonly along the [011] crystal orientation of the laser medium.
    • 具有由活性介质和第一和第二反射器组成的激光腔的单模激光器,具有邻近激光腔定位的具有高折射率的防反射区域或层,以排出高阶激光模式并防止其达到激光 条件。 具体地说,属于高阶模式的光从激光介质和第一反射器和第二反射器泄漏或流入反射区域。 当设置用于选择所需波长的激光的间隔物时,穿过它们的光也泄漏到防水层中。 可以通过调整激光腔的锥角来实现高阶模式渗透到被动反射区域中的出血优化。 此外,通过调整激光腔的等效折射率与被动防止区域单模操作在高电流水平下的比率可以实现为大至30μm的孔。 此外,这种激光器表现出可重复和预定的偏振方向,最常见的是沿着激光介质的[011]晶体取向。