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    Optical transmission apparatus, and output stabilization control method for an optical modulator used in the optical transmission apparatus
    153.
    发明公开
    Optical transmission apparatus, and output stabilization control method for an optical modulator used in the optical transmission apparatus 审中-公开
    用于控制的光传输装置中使用的光调制器的输出功率的光传输装置和稳定化处理

    公开(公告)号：EP1168039A2

    公开(公告)日：2002-01-02

    申请号：EP01113353.5

    申请日：2001-06-01

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Ishida, Kazuyuki ,  Shimizu, Katsuhiro ,  Kobayashi, Yukio

    IPC分类号： G02F1/03 ,  G02F1/21 ,  H04B10/155

    CPC分类号： H04B10/50575 ,  G02F1/0123 ,  G02F2001/212 ,  H04B10/505 ,  H04B10/508 ,  H04B10/58

    摘要： The optical transmission apparatus has an optical modulator (2) of Mach-Zehnder type, a light source (1) which supplies an optical signal to the optical modulator (2), a branching filter (3) for taking out a part of an output optical signal, an optical spectrum monitor (4) for monitoring an optical spectrum of an output optical signal taken out, an error signal generator circuit (11) for generating an error signal that shows a bias voltage error based on a result of this monitoring, and a bias voltage control circuit (5) for applying a bias voltage added with this error signal to the optical modulator (2).

    摘要翻译： 该光传输装置具有光调制器（2）Mach-Zehnder型，光源的（1）供给到光信号到光调制器（2），分波器（3），用于取出输出的一部分 光信号到光频谱监视器（4），用于取出输出光信号的光谱的监测，一个误差信号发生器电路（11），用于在误差信号产生没有示出了基于该监视的结果的偏置电压误差， 以及用于将与该误差信号加到光调制器的偏置电压的偏置电压控制电路（5）（2）。

    Article comprising an optical cavity
    154.
    发明公开
    Article comprising an optical cavity 有权
    Vorrichtung mit optischerKavität

    公开(公告)号：EP1139159A2

    公开(公告)日：2001-10-04

    申请号：EP01302215.7

    申请日：2001-03-12

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Greywall, Dennis Stanley

    IPC分类号： G02F1/21 ,  G01J3/26 ,  G02B5/20

    CPC分类号： G01J3/26 ,  G02B26/001 ,  G02B26/02

    摘要： An article comprising an optical cavity includes two mirrors, at least one of which is advantageously movable, that are spaced from and parallel to one another. In some embodiments, both mirrors are formed from unstressed single crystal silicon. The single crystal silicon used in some embodiments is advantageously sourced from single crystal silicon-on-insulator ("SOI") wafers. In a method in accordance with the present invention, a first mirror is patterned in the thin silicon layer of a first SOI wafer. A standoff is disposed on the thin silicon layer near the first mirror. The thin silicon layer of a second SOI wafer is attached to the standoff such that there is a gap between the two, spaced, thin silicon layers. The thin silicon layer of the second SOI wafer is released forming a movable mirror by removing the thick layer of silicon and the buried oxide from that wafer.

    摘要翻译： 包括光学腔的物品包括两个反射镜，其中至少一个有利地是可移动的，它们彼此间隔开并且彼此平行。 在一些实施例中，两个反射镜由无应力单晶硅形成。 在一些实施例中使用的单晶硅有利地来自单晶硅绝缘体（“SOI”）晶片。 在根据本发明的方法中，在第一SOI晶片的薄硅层中构图第一反射镜。 在第一反射镜附近的薄硅层上设置间隔。 第二SOI晶片的薄硅层附接到支座，使得在两个间隔开的薄硅层之间存在间隙。 通过从该晶片去除厚的硅层和掩埋氧化物，第二SOI晶片的薄硅层被释放形成可移动反射镜。

    FABRY-PEROT MODULATOR
    159.
    发明授权
    FABRY-PEROT MODULATOR 失效
    法布里 - 珀罗调制器

    公开(公告)号：EP0531377B1

    公开(公告)日：1997-07-09

    申请号：EP91909991.1

    申请日：1991-05-24

    申请人： BRITISH TELECOMMUNICATIONS public limited company

    发明人： WHITEHEAD, Mark

    IPC分类号： G02F1/21 ,  G02F1/015 ,  G02F3/02

    CPC分类号： G02F3/028 ,  G02F1/218 ,  G02F2001/0157 ,  G02F2203/02

    摘要： An asymetric Fabry-Perot (FP) modulator includes a quantum well structure having wider (approximately 150Å) than usual (about 100Å) wells. The FP cavity has a resonance at a wavelength of an excitonic absorption peak of the QW structure. Although the maximum change in absorption under applied bias is less with 150Å wells than with 100Å wells, the characteristics of the electroabsorption are also altered, with the result that the largest change occurs at the wavelength of the band-edge el-hhl exciton at zero bias. Absorption can be reduced by biasing the QW and hence the AFPM can have a normally-off (zero bias, zero reflectivity) characteristic. Such an arrangement makes possible higher contrast modulation and/or lower operating voltages. The FP modulator may be used in SEEDs.

    Vertical optical cavity semiconductor devices
    160.
    发明公开
    Vertical optical cavity semiconductor devices 失效
    Halbleitervorrichtung mit vertikalem optischen Resonator。

    公开(公告)号：EP0682388A3

    公开(公告)日：1996-02-21

    申请号：EP95302582.2

    申请日：1995-04-19

    申请人： AT&T Corp.

    发明人： Goossen, Keith Wayne

    IPC分类号： H01S3/085 ,  H01L33/00 ,  G02B6/12 ,  G02F1/015 ,  G02F1/21 ,  C30B23/02

    CPC分类号： H01S5/18361 ,  B82Y20/00 ,  G02F1/017 ,  G02F1/218 ,  H01L33/105

    摘要： A multi-layer mirror structure included in a surface-normal semiconductor optical cavity is fabricated in a deposition reactor dedicated to that purpose alone. Additional layers of the device are subsequently deposited on top of the mirror structure in a second reactor. In practice, the dedicated reactor produces layers whose thickness variations over their entire extents are considerably less than the thickness variations of layers made in the second reactor. This coupled with the fact that the actual achieved thickness of the mirror structure can be conveniently measured before commencing deposition of a prescribed thickness of the additional layers makes it possible to fabricate a specified-thickness optical cavity within tight tolerances in a high-yield manner.

    摘要翻译： 包含在表面正常半导体光学腔中的多层反射镜结构仅在专用于该目的的沉积反应器中制造。 随后在第二反应器中将装置的附加层沉积在反射镜结构的顶部上。 在实践中，专用反应器产生的层的厚度在其整个范围内的变化远小于在第二反应器中制成的层的厚度变化。 这结合以下事实：在开始沉积规定厚度的附加层之前可以方便地测量镜结构的实际厚度，使得可以以高收益的方式在严格的公差内制造特定厚度的光学腔。