Sequential demultiplexing receiver for a network of optical sensors
using spectrum modulation encoding
    1.
    发明授权
    Sequential demultiplexing receiver for a network of optical sensors using spectrum modulation encoding 失效
    使用频谱调制编码的光传感器网络的顺序解复用接收机

    公开(公告)号:US5335065A

    公开(公告)日:1994-08-02

    申请号:US934525

    申请日:1992-10-12

    CPC分类号: G01D5/35383 G01D5/266

    摘要: A sequential demultiplexing receiver for a network of sensors (20) using spectrum modulation encoding, the receiver being essentially constituted by an integrated optical circuit comprising a substrate (34) that is birefringent or semiconductive on which there are formed mode couplers or mode converters (38) operating by the electro-optical effect and that are sequentially activated at high frequency to generate optical path length differences matching those of the sensors.

    摘要翻译: PCT No.PCT / FR92 / 00141 Sec。 371日期:1992年10月12日 102(e)日期1992年10月12日PCT提交1992年2月13日PCT公布。 公开号WO92 / 14990 一种用于使用频谱调制编码的传感器网络(20)的顺序解复用接收机,该接收机主要由集成光学电路构成,该集成光学电路包括双折射或半导体的衬底(34),在该衬底上形成 模式耦合器或模式转换器(38),其通过电光效应操作,并且以高频顺序激活,以产生与传感器的光路长度差异。

    Regulated optical amplifier having an optical circulator
    4.
    发明授权
    Regulated optical amplifier having an optical circulator 失效
    具有光循环器的调节光放大器

    公开(公告)号:US5636054A

    公开(公告)日:1997-06-03

    申请号:US534209

    申请日:1995-09-26

    摘要: An optical amplifier of the type including an inlet for a light signal to be amplified and an outlet for an amplified light signal that has been amplified by means of an amplifying waveguide that is controlled by regulation light coming from a pumping diode; the amplifier comprising: an optical circulator having an inlet port receiving the light signal to be amplified, an outlet port delivering the amplified light signal, and two intermediate ports, the first of the intermediate ports being connected to the amplifying waveguide; and regulation means having an inlet connected to the second of the intermediate ports and an outlet connected to the pumping diode, whereby the amplifying waveguide has equalized gain for all of the carrier waves constituting the amplified light signal.

    摘要翻译: 一种光放大器,其类型包括用于待放大的光信号的入口和放大的光信号的出口,该放大的光信号已经通过由调节来自泵浦二极管的光控制的放大波导放大; 所述放大器包括:光循环器,具有接收要放大的光信号的入口端口,输出放大的光信号的出口端口和两个中间端口,所述第一中间端口连接到放大波导; 并且调节装置具有连接到第二中间端口的入口和连接到泵浦二极管的出口,由此放大波导具有对构成放大的光信号的所有载波的均衡增益。

    Process for manufacturing a semiconductor laser having a buried ribbon
    5.
    发明授权
    Process for manufacturing a semiconductor laser having a buried ribbon 失效
    具有掩埋带的半导体激光器的制造方法

    公开(公告)号:US4648940A

    公开(公告)日:1987-03-10

    申请号:US806802

    申请日:1985-12-10

    摘要: Process for manufacturing a semiconductor laser having a buried ribbon. After making a double heterostructure (2, 3, 4, 5) on a substrate (1), there is implanted in the contact layer (5) a p-type doping material, which has the effect of rendering it amorphous. The unit, except for a ribbon, is etched which leaves a mesa. A resumption of epitaxy makes it possible to bury the channel. This resumption does not lead to a crystalline growth on the upper surface of the contact layer, although the annealing that takes place during the resumption of epitaxy gives good ohmic contacts at the level of the implanted layer.

    摘要翻译: 具有掩埋带的半导体激光器的制造方法。 在衬底(1)上制造双异质结构(2,3,4,5)之后,在接触层(5)中注入p型掺杂材料,其具有使其变为无定形的效果。 除了丝带之外,该单元被蚀刻,留下台面。 恢复外延使得可以掩埋通道。 这种恢复不会导致接触层的上表面上的结晶生长,尽管在恢复外延期间发生的退火在注入层的水平上产生良好的欧姆接触。

    Band-pass filter in an optical waveguide
    6.
    发明授权
    Band-pass filter in an optical waveguide 失效
    光波导中的带通滤波器

    公开(公告)号:US5887094A

    公开(公告)日:1999-03-23

    申请号:US921323

    申请日:1997-08-29

    摘要: A band-pass filter written into an optical waveguide includes at least one Bragg grating creating coupling between two propagation modes. In one version the pitch of the grating is equal to the length of beating of these two modes, to create codirectional coupling for the LP01 and LP0i modes. In another version the grating couples the LP01 mode to any contradirectional radiation mode. The filter includes, at one point at least of the grating, an area in which one half-period of the grating is omitted to create a phase-shift of .pi. between the two coupled modes.

    摘要翻译: 写入光波导的带通滤波器包括至少一个布拉格光栅,其产生两个传播模式之间的耦合。 在一个版本中,光栅的间距等于这两种模式的跳动长度,以创建LP01和LP0i模式的编码耦合。 在另一个版本中,光栅将LP01模式耦合到任何对向辐射模式。 滤波器在至少光栅的一个点处包括省略光栅的一个半周期以在两个耦合模式之间产生pi的相移的区域。

    Dispersion-shifted monomode optical fiber
    7.
    发明授权
    Dispersion-shifted monomode optical fiber 失效
    色散位移单模光纤

    公开(公告)号:US5659649A

    公开(公告)日:1997-08-19

    申请号:US637784

    申请日:1996-05-02

    摘要: Dispersion-shifted monomode optical fibers have an effective mode surface area greater than 65 .mu.m.sup.2 by optimization of the geometrical characteristics that characterize the fibers. The fibers have substantially zero chromatic dispersion in the vicinity of 1.55 .mu.m, and they include an optical core having a central portion, a first layer having an index lower than the index of the central portion, and a second layer having an index higher than the index of the first layer and higher than the index of the optical cladding.

    摘要翻译: PCT No.PCT / FR95 / 01121 Sec。 371日期:1996年5月2日 102(e)日期1996年5月2日PCT提交1995年8月25日PCT公布。 公开号WO96 / 07942 日期1996年3月14日通过优化纤维表征的几何特性,分散位移单模光纤具有大于65μm2的有效模式表面积。 纤维在1.55μm附近具有基本上为零的色散,并且它们包括具有中心部分的光学芯,具有低于中心部分的折射率的折射率的第一层,以及指数高于 第一层的折射率高于光学包层的折射率。

    Process for the production of a monolithic integrated optical device
incorporating a semiconductor laser and device obtained by this process
    8.
    发明授权
    Process for the production of a monolithic integrated optical device incorporating a semiconductor laser and device obtained by this process 失效
    包含半导体激光器的单片集成光学器件的制造方法以及通过该方法获得的器件

    公开(公告)号:US4720468A

    公开(公告)日:1988-01-19

    申请号:US800601

    申请日:1985-11-13

    摘要: Process for the production of a monolithic integrated optical device incorporating a semiconductor laser and an optical waveguide, as well as to a device obtained by this process.The substrate is given a profile having at least one step. On said substrate is deposited by a single epitaxy operation performed in the vapour phase and in a successive manner a first confinement layer, a guidance layer made from a material transparent for the radiation emitted by the laser, a second confinement layer, an active layer, a third confinement layer and a contact layer. The transparent material has a refractive index higher than the indices of the confinement layers surrounding the same. Thickness values are given to the different layers such that the active layer of the lower stack faces the transparent layer of the upper stack.Application to optical telecommunications.

    摘要翻译: PCT No.PCT / FR85 / 00067 Sec。 371日期:1985年11月13日 102(e)1985年11月13日PCT PCT公布1985年3月29日PCT公布。 公开号WO85 / 04491 1985年10月10日。用于生产包含半导体激光器和光波导的单片集成光学器件的方法以及通过该方法获得的器件。 给予衬底具有至少一个步骤的轮廓。 在所述衬底上通过在气相中以连续方式执行的单次外延操作沉积第一限制层,由对于由激光器发射的辐射透明的材料制成的引导层,第二限制层,活性层, 第三限制层和接触层。 透明材料的折射率高于围绕其的限制层的折射率。 厚度值被赋予不同的层,使得下堆叠的活性层面向上堆叠的透明层。 应用于光通信。

    Mode converter
    9.
    发明授权
    Mode converter 有权
    模式转换器

    公开(公告)号:US07835603B2

    公开(公告)日:2010-11-16

    申请号:US11574803

    申请日:2005-08-04

    IPC分类号: G02B6/26

    摘要: An in-fiber mode converter comprises fiber portions (10) constituting an input microlens, a fiber portion (20) constituting a phase shifting region adapted to convert a propagation mode of an optical signal into another propagation mode, and fiber portions (30) constituting an output microlens. The fiber portions are spliced, the converter is compact and losses are minimized relative to mode conversion in free space.

    摘要翻译: 光纤内模式转换器包括构成输入微透镜的光纤部分(10),构成适于将光信号的传播模式转换成另一传播模式的相移区域的光纤部分(20),以及构成光纤部分 输出微透镜。 光纤部分被拼接,转换器是紧凑的,并且相对于自由空间中的模式转换而言损失最小化。

    Filtering optical fiber having a modified photosensitivity profile
    10.
    发明授权
    Filtering optical fiber having a modified photosensitivity profile 有权
    具有改进的光敏度曲线的滤光光纤

    公开(公告)号:US06314221B1

    公开(公告)日:2001-11-06

    申请号:US09323136

    申请日:1999-06-01

    IPC分类号: G02B634

    CPC分类号: G02B6/02119

    摘要: It is shown that by modifying the photosensitivity profile it is possible to provide better adjustment of the characteristic curve of a filter, and in particular to eliminate a reflection peak that is present within the working band. The photosensitivity profile is inverted to a considerable extent. In practice, the core of the fiber has only 20% of photosensitive doping material compared with the quantity of photosensitive doping material present in the cladding of the fiber.

    摘要翻译: 显示通过改变光敏度曲线,可以提供对过滤器的特性曲线的更好的调整,并且特别是消除存在于工作带内的反射峰。 光敏度曲线在相当程度上反转。 实际上,与纤维包层中存在的光敏掺杂材料的量相比,光纤的核心仅具有20%的光敏掺杂材料。