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    • 7. 发明授权
    • Low-noise, high-power optical amplifier
    • 低噪声,高功率光放大器
    • US06512629B1
    • 2003-01-28
    • US09416817
    • 1999-10-12
    • Sol P. DijailiJeffrey D. Walker
    • Sol P. DijailiJeffrey D. Walker
    • H01S300
    • H01S5/5027H01S5/0265H01S5/0611H01S5/1032H01S5/142H01S5/18302H01S5/18305H01S5/18308H01S5/18358H01S5/2027H01S5/2215H01S5/2231H01S5/4056H01S5/5072H01S2301/02
    • A multi-stage lasing semiconductor optical amplifier (SOA) device amplifies an optical signal. The multi-stage SOA includes at least two SOA stages coupled in series. Each SOA stage includes a semiconductor gain medium and a laser cavity including the semiconductor gain medium. The medium is pumped above a lasing threshold for the laser cavity, which clamps the gain of the medium. An optical signal propagating through the medium is amplified by the gain-clamped medium. The SOA stages are characterized by a design parameter which varies from stage to stage. In a preferred embodiment, the design parameter includes a noise figure and a saturable power, with both parameters increasing as the optical signal propagates from stage to stage. As a result, the multi-stage SOA can achieve better noise performance and higher power outputs compared to comparable SOAs of constant noise figure and saturable power.
    • 多阶段激光半导体光放大器(SOA)器件放大光信号。 多级SOA包括至少两个串联耦合的SOA阶段。 每个SOA阶段包括半导体增益介质和包括半导体增益介质的激光腔。 介质被泵送在激光腔的激光阈值之上,其夹持介质的增益。 通过介质传播的光信号被增益钳位介质放大。 SOA阶段的特征在于从阶段到阶段都不同的设计参数。 在优选实施例中,设计参数包括噪声系数和可饱和功率,随着光信号从舞台传播到舞台,两个参数都增加。 因此,与具有恒定噪声系数和可饱和能力的可比较SOA相比,多级SOA可以实现更好的噪声性能和更高的功率输出。