Optical soliton transmission system
    2.
    发明授权
    Optical soliton transmission system 失效
    光孤子传输系统

    公开(公告)号:US5530585A

    公开(公告)日:1996-06-25

    申请号:US255615

    申请日:1994-06-09

    CPC分类号: H04B10/25077 H01S5/50

    摘要: In an optical soliton transmission system an optical transmitter (2) generating short pulses is coupled to a glass fiber cable (4) comprising sections of glass fiber (7, 9, 11, 13, 15) with interspaced semiconductor laser amplifiers (8, 10, 12, 14). An optical receiver (6) is connected to the end of the glass fiber cable (15). In optical soliton transmission Erbium doped fiber amplifiers and dispersion shifted fiber are currently used in the 1.5 .mu.m wavelength region. However, by utilizing standard fiber in the 1.3 .mu.m wavelength region it is possible to use a lower soliton power compared with a state-of the-art transmission system.

    摘要翻译: 在光孤子传输系统中,产生短脉冲的光发射机(2)被耦合到玻璃纤维电缆(4),玻璃纤维电缆(4)包括具有间隔半导体激光放大器(8,10)的玻璃纤维(7,9,11,13,15)部分 ,12,14)。 光接收器(6)连接到玻璃光缆(15)的端部。 在光孤子传输中,掺铒光纤放大器和色散位移光纤目前用于1.5μm波长区域。 然而,通过在1.3μm波长区域中使用标准光纤,与现有技术的传输系统相比,可以使用较低的孤子光功率。

    Device for optical heterodyne detection and mirror system suitable for
use in such a device
    3.
    发明授权
    Device for optical heterodyne detection and mirror system suitable for use in such a device 失效
    用于光学外差检测的装置和适用于这种装置的镜子系统

    公开(公告)号:US5237442A

    公开(公告)日:1993-08-17

    申请号:US882747

    申请日:1992-05-11

    IPC分类号: H04B10/148

    摘要: In an optical heterodyne or homodyne receiver an optical system (140) is used in which the local oscillator beam (L) is combined with the signal beam (S). Simultaneously, these beams are split into orthogonally polarized sub-beams. For this purpose the optical system (140) comprises polarization-sensitive beam-splitting layers (141a and 141b) and neutral beam-splitting layers (142a and 142b) which function as beam-combining elements. In order to align the directions of the exit sub-beams of the signal beam (.sub.11, S.sub.12, S.sub.2, S.sub.22) and the local oscillator beam (L.sub.11, L.sub.12, L.sub.21, L.sub.22), the angles (.alpha., .beta., .gamma., .delta.) enclosed by the beam-splitting faces are chosen to be such that two angles located opposite each other have a combined magnitude of 180.degree.. This is realised by providing the layers (141a, 142b and 141b, 142a) on side faces of one prism (140a, 140b).

    摘要翻译: 在光学外差或零差接收机中,使用光学系统(140),其中本地振荡器波束(L)与信号波束(S)组合。 同时,这些光束被分成正交极化的子光束。 为此,光学系统(140)包括用作束组合元件的偏振敏感光束分离层(141a和141b)和中性光束分离层(142a和142b)。 为了使信号光束(11,S12,S2,S22)和本地振荡器光束(L11,L12,L21,L22)的退出子光束的方向对齐,角度(α,β,γ, )被选择为使得彼此相对定位的两个角度具有180度的组合大小。 这通过在一个棱镜(140a,140b)的侧面上设置层(141a,142b和141b,142a)来实现。

    Monomode optical transmission fibre having a tapered end portion
provided with a lens and method of manufacturing such a fibre
    4.
    发明授权
    Monomode optical transmission fibre having a tapered end portion provided with a lens and method of manufacturing such a fibre 失效
    具有设置有透镜的锥形端部的单模光纤传输光纤和制造这种光纤的方法

    公开(公告)号:US4824195A

    公开(公告)日:1989-04-25

    申请号:US153531

    申请日:1988-02-02

    申请人: Giok D. Khoe

    发明人: Giok D. Khoe

    摘要: A monomode optical transmission fibre (1) is described, having a tapered end portion (5) on which a lens (10) is arranged. This lens is obtained by immersing the fibre end in a transparent liquid material (7) whose melting temperature is lower than that of the fibre materials and whose refractive index is substantially equal to that of the fibre core (2), and by allowing the drop which adheres to the fibre after withdrawal to solidify.

    摘要翻译: 描述了具有锥形端部(5)的单模光纤传输光纤(1),透镜(10)布置在其上。 该透镜通过将光纤端浸入熔融温度低于纤维材料的透明液体材料(7)中并且其折射率基本上等于纤维芯(2)的折射率而获得,并且通过允许下降 其在退出固化后粘附于纤维。

    Method of manufacturing a light-emitting device
    6.
    发明授权
    Method of manufacturing a light-emitting device 失效
    制造发光装置的方法

    公开(公告)号:US4692208A

    公开(公告)日:1987-09-08

    申请号:US654834

    申请日:1984-09-26

    CPC分类号: H01L33/58

    摘要: On a support which supports a light-emitting semiconductor device there is arranged a cap which is hermetically sealed to the support. In the cap there is provided a transparent plate, an inner layer of which facing the semiconductor device consists of a material having a high refractive index (>1.7). On the outer side of the plate there is provided a layer of photosensitive lacquer which is exposed to the light emitted by the semiconductor device. After development of the layer of lacquer, only the exposed part which is situated opposite the semiconductor device remains. This part is heated to the melting point, thus forming a droplet of lacquer, after which the outer layer of the plate and the droplet of lacquer are removed by way of a non-selective etching method, so that a lens which is situated opposite the semiconductor device and a flat window which surrounds the lens are automatically formed at the same time.

    摘要翻译: 在支持发光半导体器件的支撑件上设置有密封到支撑体的盖。 在盖中设置有透明板,面向半导体器件的内层由具有高折射率(> 1.7)的材料构成。 在该板的外侧设置有一层感光漆,该感光漆暴露于半导体器件发出的光。 在开发漆层之后,仅剩下与半导体器件相对的露出部分。 将该部分加热至熔点,从而形成漆液滴,之后通过非选择性蚀刻方法除去板的外层和漆液滴,使得位于 半导体器件和围绕透镜的平面窗口同时自动形成。

    Coupling element for an optical transmission fiber
    7.
    发明授权
    Coupling element for an optical transmission fiber 失效
    用于光纤传输光纤的耦合元件

    公开(公告)号:US4370021A

    公开(公告)日:1983-01-25

    申请号:US159274

    申请日:1980-06-13

    CPC分类号: G02B6/4203

    摘要: A coupling element for coupling a laser radiation source to a monomode optical transmission fiber. The end of the fiber is monotonically flattened at a temperature at which the fiber core has a viscosity of between 10.sup.7 to 10.sup.8.5 poises. The fiber has a cladding glass chosen to have a viscosity of between 10.sup.10 -10.sup.11 poises at the flattening temperature. This causes the core glass to emerge in the form of a semi-ellipsoidal lens, when the fiber is flattened.

    摘要翻译: 用于将激光辐射源耦合到单模光传输光纤的耦合元件。 纤维的端部在纤维芯的粘度为107〜108.5泊的温度下单调变平。 纤维具有选择在平坦化温度下具有在1010-1011泊之间的粘度的包层玻璃。 这使得当纤维变平时,芯玻璃以半椭圆形透镜的形式出现。

    Device for optical heterodyne or homodyne detection of an optical signal
beam and receiver provided with such a device
    8.
    发明授权
    Device for optical heterodyne or homodyne detection of an optical signal beam and receiver provided with such a device 失效
    用于具有这种装置的光信号光束和接收器的光学外差或零差检测装置

    公开(公告)号:US5477369A

    公开(公告)日:1995-12-19

    申请号:US798265

    申请日:1995-12-19

    IPC分类号: H04B10/148 H04B10/06

    摘要: A device for optical heterodyne detection is described, using only two adjustable elements influencing the state of polarisation and having a limited control range (51, 52) in order to realize an endless polarisation control. In a first embodiment a temporary loss of signal intensity of at most 3 dB is accepted. This signal loss is avoided if a circuit of non-adjustable optical components (81, 82, 83) is incorporated in the heterodyne detection device.

    摘要翻译: 描述了用于光学外差检测的装置,其仅使用影响极化状态的两个可调节元件并具有有限的控制范围(51,52),以实现无限偏振控制。 在第一实施例中,接受至多3dB的信号强度的暂时损失。 如果不可调光学部件(81,82,83)的电路并入外差检测装置,则避免信号损失。