发明名称 |
WAVELENGTH SELECTIVE SWITCH |
摘要 |
A wavelength selective switch includes a light input and output part in which light input/output ports are arranged in a predetermined direction, the light input/output ports including a first port for inputting light, a second port for outputting the light, and at least one third port for inputting or outputting the light, a wavelength dispersive element optically coupled to the light input and output part, and a phase modulation element which includes a plurality of pixels performing phase modulation and diffractively deflects an optical path of the light arriving from the first port via the wavelength dispersive element by presenting a diffraction-grating-shaped phase modulation pattern, and the light input/output ports are arranged so that a 1st order light of the light is incident on the second port, and the first port and the third port are spaced from an optical axis of a −1st order light of the light. |
申请公布号 |
US2014321796(A1) |
申请公布日期 |
2014.10.30 |
申请号 |
US201414260972 |
申请日期 |
2014.04.24 |
申请人 |
Sumitomo Electric Industries, Ltd. |
发明人 |
OHTSUKA Takafumi;TAZAWA Hidehisa |
分类号 |
G02F1/313 |
主分类号 |
G02F1/313 |
代理机构 |
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代理人 |
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主权项 |
1. A wavelength selective switch, comprising:
a light input and output part in which light input/output ports are arranged in a predetermined direction, the light input/output ports including a first port for inputting light, a second port for outputting the light, and at least one third port for inputting or outputting the light; a wavelength dispersive element optically coupled to the light input and output part; and a phase modulation element which includes a plurality of pixels performing phase modulation and diffractively deflects an optical path of the light arriving from the first port via the wavelength dispersive element by presenting a diffraction-grating-shaped phase modulation pattern, wherein the light input/output ports are arranged so that a 1st order light of the light diffracted by the phase modulation element is incident on the second port, and the first port and the third port are spaced from an optical axis of a −1st order light of the light diffracted by the phase modulation element. |
地址 |
Osaka-shi JP |