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    • 72. 发明授权
    • Method of amplifying optical signals using erbium-doped materials with extremely broad bandwidths
    • 使用具有极宽带宽的铒掺杂材料放大光信号的方法
    • US06469825B1
    • 2002-10-22
    • US09628731
    • 2000-07-28
    • Michel J. F. DigonnetHiroshi NoguchiMartin M. Fejer
    • Michel J. F. DigonnetHiroshi NoguchiMartin M. Fejer
    • H01S300
    • C03C3/062C03C3/125C03C13/046C03C13/048H01S3/0637H01S3/06716H01S3/06754H01S3/1608H01S3/1618H01S3/1638H01S3/1643
    • In a method of amplifying optical input signals over a wide bandwidth, the optical input signals are applied to an optical waveguide made from a rare-earth-doped amorphous yttrium aluminum oxide material (e.g., erbium-doped yttrium aluminum oxide material). The optical input signals include optical signals having wavelengths shorter than 1,520 nanometers and optical signals having wavelengths longer than 1,610 nanometers. Preferably, the wavelengths range from as short as approximately 1,480 nanometers to as long as approximately 1,650 nanometers. Pump light is applied to the optical waveguide to cause the waveguide to provide optical gain to the optical input signals. The optical gain causes the optical signals to be amplified within the waveguide to provide amplified optical signals over the extended range from approximately 1,480 nanometers to approximately 1,650 nanometers, including, in particular, optical signals having wavelengths shorter than 1,520 nanometers and optical signals having wavelengths longer than 1,610 nanometers. Alternatively, the wavelengths of the optical input signals may be in the range from approximately 1,480 nanometers to approximately 1,565 nanometers. As a further alternative, the wavelengths of the optical input signals may be in the range from approximately 1,565 nanometers to approximately 1,650 nanometers.
    • 在宽带宽放大光输入信号的方法中,光输入信号被施加到由稀土掺杂的无定形钇铝氧化物材料(例如掺铒氧化铝材料)制成的光波导。 光输入信号包括波长短于1520纳米的光信号和波长长于1610纳米的光信号。 优选地,波长范围从约1,480纳米到长达约1,650纳米。 泵浦光被施加到光波导以使波导对光输入信号提供光增益。 光学增益使得光信号在波导内被放大,以在从大约1,480纳米到大约1,650纳米的扩展范围内提供放大的光信号,包括特别是具有短于1,520纳米的波长的光信号和具有波长更长的光信号 比1,610纳米。 或者,光输入信号的波长可以在从大约1,480纳米到大约1,565纳米的范围内。 作为另一替代方案,光输入信号的波长可以在大约1565纳米到大约1,650纳米的范围内。
    • 74. 发明授权
    • Process for removal of hydrogen sulfide
    • 硫化氢除去方法
    • US5391278A
    • 1995-02-21
    • US184679
    • 1994-01-21
    • Kosaku HonnaHiroshi NoguchiHiroshi IidaMasayuki Goto
    • Kosaku HonnaHiroshi NoguchiHiroshi IidaMasayuki Goto
    • B01D53/14B01D53/52C01B17/05C01B17/02
    • C01B17/05B01D53/1425B01D53/52Y02P20/132
    • A process for removal of hydrogen sulfide is here provided by which sulfur and hydrogen can be efficiently recovered from a hydrogen sulfide-containing gas and secondarily produced sulfuric acid can be properly treated, whereby a long-term continuous operation is possible in a closed system.The invention is mainly directed to a process which comprises the steps of bringing a hydrogen sulfide-containing gas into contact with an aqueous iron salt (Fe.sup.3+) solution to carry out oxidation reaction and to thereby produce a solution containing Fe.sup.2+, sulfur and secondarily produced sulfuric acid in a hydrogen sulfide gas absorption-oxidation step, separating sulfur from the solution, electrochemically treating the solution to regenerate the aqueous iron salt (Fe.sup.3+) solution, bringing a part of the solution from which sulfur has been separated into contact with hydrogen to reduce secondarily produced sulfuric acid contained in the solution and to thereby produce hydrogen sulfide, and then returning the thus produced hydrogen sulfide to the hydrogen sulfide gas absorption-oxidation step.
    • 这里提供了一种除去硫化氢的方法,通过该方法可以从含硫化氢的气体中有效地回收硫和氢,并且二次生产的硫酸可以被适当地处理,从而在封闭系统中可以进行长期的连续操作。 本发明主要涉及一种方法,其包括使含硫化氢的气体与铁盐水(Fe3 +)水溶液接触以进行氧化反应,从而产生含有Fe2 +,硫和次要生成的硫酸的溶液 在硫化氢气体吸收 - 氧化步骤中,从溶液中分离出硫,电化学处理溶液以再生含铁水溶液(Fe3 +)溶液,使一部分硫被分离成与氢接触的溶液减少 二次生成溶液中所含的硫酸,从而产生硫化氢,然后将由此产生的硫化氢返回至硫化氢气体吸收 - 氧化步骤。