Wavelength selective switch device, wavelength switching method for the same and communication apparatus

US9581878B2 · kind B2 · utility

Assignee

• WUHAN RESEARCH INSTITUTE OF POSTS AND TELECOMMUNICATIONS · CN

Inventors

• Dequan XIE · 红钢城街道, CN
• Quan YOU · 红钢城街道, CN
• Zichen Liu · 红钢城街道, CN
• Ying Qiu · 红钢城街道, CN
• Miaofeng Li · 红钢城街道, CN
• Qi Yang · Nanhu, CN

Key dates

• Filing date: Apr 22, 2014
• Grant date: Feb 28, 2017
• Expiry date: Jan 9, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2011/0039
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

There are provided a wavelength selective switch device, a communication apparatus and a wavelength switching method. The wavelength selective switch device includes an incidence unit; an exit unit; a wavelength diversifying-synthesizing unit for diversifying and multiplexing the respective incident lights in a first axis direction; a light adjustment unit for making the lights of respective wavelengths be not diversified in the second axis direction; a liquid crystal beam deflection unit having a plurality of pixels divided into sub-regions, for deflecting the lights of the respective wavelengths by changing phase-shift characteristics of the pixels in the sub-regions; a reflection unit, disposed in parallel with the liquid crystal beam deflection unit; a deflection driving unit for driving electrodes of the pixels to generate required phase-shift characteristics.