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    • 21. 发明授权
    • Apparatus for spectral encoding and decoding of femtosecond optical
pulses
    • 用于飞秒光脉冲频谱编码和解码的装置
    • US5907421A
    • 1999-05-25
    • US619090
    • 1996-03-20
    • Warren S. WarrenJune-Koo RheeHisashi Kobayashi
    • Warren S. WarrenJune-Koo RheeHisashi Kobayashi
    • H04B10/14H04B10/04
    • H04B10/676
    • A DPSK communication system employs an optical signal which comprises plural, coherent, optical frequencies, each optical frequency positioned within a range of frequencies (i.e., a "frequency slot"). The optical signal comprises plural frequency slots, with the wavefront in each time segment of each frequency slot being phase modulated in accordance with data signals. Plural frequency slots are transmitted "in parallel", in each of a plurality of succeeding time segments. A demodulator includes first and second optical paths, the first component of the optical signal directed onto the first optical path and a second component directed onto the second optical path. A modulator is positioned in at least one of the optical paths and is responsive, during a time segment, to a first applied control signal, to alter the phase, and thus the frequency, of the first component by approximately one frequency slot. At the output of the first and second optical paths, an optical coupler interferes the first component and the second component so as to enable constructive and destructive interference therebetween in accordance with respective phase modulations thereof.
    • DPSK通信系统采用包括多个相干光频率的光信号,每个光频率位于频率范围内(即,“频率槽”)。 光信号包括多个频率时隙,每个时隙的每个时间段中的波阵面根据数据信号进行相位调制。 在多个后续时间段中的每一个中,“并行地”发送多个时隙。 解调器包括第一和第二光路,光信号的第一分量被引导到第一光路上,第二分量指向第二光路。 调制器位于至少一个光路中,并且在时间段期间响应于第一施加的控制信号,以将第一分量的相位以及因此的频率改变大约一个频率槽。 在第一和第二光路的输出处,光耦合器干扰第一部件和第二部件,以便根据其相应的相位调制来实现它们之间的建构性和相消干涉。
    • 23. 发明授权
    • Glassmelting method with reduced volatilization of alkali species
    • 具有降低碱性挥发的玻璃熔化法
    • US5628809A
    • 1997-05-13
    • US489911
    • 1995-06-13
    • Hisashi Kobayashi
    • Hisashi Kobayashi
    • C03B5/235C03B5/225
    • C03B5/2353Y02P40/55
    • A glassmelting method wherein fuel and oxidant combust in a combustion zone in the upper level of a furnace and shield oxygen is passed over the molten glass surface at a low velocity to form a shield layer between the combustion zone and the molten glass, to counteract the reaction of water vapor, resulting from the combustion, with species within the molten glass, to reduce volatilization of alkali species from the molten glass, and to make the molten glass more oxidizing. Reducing gas may be used in place of shield oxygen to make the molten glass more reducing. Both shield oxygen and reducing gas may be used sequentially in a multi-zone furnace.
    • 一种玻璃熔化方法,其中燃料和氧化剂在炉的上部燃烧区中燃烧并且保护氧气以低速度在熔融玻璃表面上通过,以在燃烧区域和熔融玻璃之间形成屏蔽层,以抵消 由燃烧产生的水蒸气与熔融玻璃内的物质的反应,以减少碱金属物质从熔融玻璃的挥发,并使熔融玻璃更具氧化性。 可以使用还原气体代替屏蔽氧气,以使熔融玻璃更加减少。 屏蔽氧气和还原气体都可以在多区域炉中顺序使用。