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    • 7. 发明公开
    • Soliton generator
    • SOLITON发电机
    • EP0547779A3
    • 1993-08-25
    • EP92310600.9
    • 1992-11-20
    • AT&T Corp.
    • Korotky, Steven K.
    • G02F1/03G02F1/225H04B10/18
    • H04B10/25077G02F1/0327G02F1/225
    • This invention relates to a device for generating solitons by amplitude modulating an optical signal with separate in-phase electrical signals of different harmonically related frequencies. Specifically, an amplitude modulator such as a Y junction Mach-Zehnder interferometer (23, 25, 26, 28) has multiple sets of distributed electrodes (50, 52...64). The interferometer has a set of electrodes for each electrical signal of a specific frequency, thus, if three separate signals of harmonically related frequencies are used to amplitude modulate an optical signal, then the interferometer has three sets of electrodes located between the Y junctions (30) of the Mach-Zehnder interferometer. The structure of a separate set of electrodes for each of the signals results in a soliton generator which avoids the prior art problem of signal loss caused by combiningg many high frequency signals into a composite signal and the resulting need for a relatively expensive amplifier capable of uniformly amplifying the multi-octave composite signal.
    • 10. 发明公开
    • Optical amplifier-photodetector device
    • OptischeVerstärker-Photodetektor-Anordnung。
    • EP0422854A2
    • 1991-04-17
    • EP90310960.1
    • 1990-10-05
    • AT&T Corp.
    • Halemane, Thirumala RayaKoch, Thomas L.Korotky, Steven K.
    • G02B6/12H01L31/109
    • H01S5/50G02B6/12004G02B6/34G02B6/42H01S5/0264
    • The device here disclosed comprises an optical amplifier (12) coupled to direct optical energy into a passive wavegulde (16,14,21) for transmission through the waveguide to its other end. A photodetector (8) positioned relative to the passive waveguide, detects the presence of optical energy in the passive waveguide. The photodetector in the structure illustrated is positioned downstream from the optical amplifier and spatially positioned with respect to the optical amplifier to receive optical energy only from the waveguide. The photodetector does not receive optical energy directly from the optical amplifier. A small fraction of the optical energy carried by the passive waveguide is received and detected by the photodetector.
    • 这里公开的装置包括光放大器(12),其耦合以将光能引导到无源波长(16,14,21)中,用于通过波导传输到其另一端。 相对于无源波导定位的光电检测器(8)检测无源波导中光能的存在。 所示结构中的光电检测器位于光放大器的下游,并相对于光放大器在空间上定位,以仅从波导接收光能。 光电检测器不直接从光放大器接收光能。 由无源波导承载的光能的一小部分由光电检测器接收和检测。