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    • 84. 发明授权
    • Wavelength selective switch
    • 波长选择开关
    • US08761554B2
    • 2014-06-24
    • US13419646
    • 2012-03-14
    • Koji MatsumotoSatoshi WatanabeToshiro OkamuraTakeshi Yamazaki
    • Koji MatsumotoSatoshi WatanabeToshiro OkamuraTakeshi Yamazaki
    • G02B6/26G02B6/42
    • G02B6/3518G02B6/3534
    • Provided is a wavelength selective switch, which includes: an input/output unit; a dispersive portion; a condensing optical system; and the deflection portion. The input/output unit has input/output ports. The dispersive portion disperses signal light incident from the input/output ports. The condensing optical system condenses a plurality of signal light beams dispersed by the dispersive portion. The deflection portion has a plurality of deflection elements. The deflection elements deflect, along a second direction, the signal light beams condensed by the condensing optical system. In the condensing optical system, the aberration amount of the meridional component in a sagittal coma aberration remains substantially constant irrespective of an angle formed between the optical axis of the condensing optical system and a signal light beam incident on the condensing optical system from the input/output portion, at an incident position of the incident signal light beam at a certain height in the second direction.
    • 提供一种波长选择开关,其包括:输入/输出单元; 分散部分; 聚光光学系统; 和偏转部。 输入/输出单元具有输入/输出端口。 色散部分分散从输入/输出端口入射的信号光。 聚光光学系统凝聚由分散部分散射的多个信号光束。 偏转部分具有多个偏转元件。 偏转元件沿着第二方向偏转由聚光光学系统会聚的信号光束。 在聚光光学系统中,与聚光光学系统的光轴和入射到聚光光学系统的信号光束之间的角度不同,矢状彗差中的子午分量的像差量保持基本恒定, 在入射信号光束的入射位置处,在第二方向上处于一定高度。