Beam processing apparatus, beam attenuation and switching apparatus, and optical wavelength selective switch system

摘要

The present invention discloses a beam processing device, a beam attenuation and switching device, and an optical wavelength selective switch system. The beam processing device in the present invention includes a polymer polarization grating (1021) and a quarter-wave plate array (1022). Splitting and adjustment of a beam polarization state may be implemented by using the polymer polarization grating and the quarter-wave plate array. The beam attenuation and switching device includes a switchable polarization grating and an optical path angle adjustment device, or includes a half-wave liquid crystal plate, a quarter-wave plate, a polymer polarization grating, and an optical path angle adjustment device. The optical wavelength selective switch system includes the foregoing beam processing device and the foregoing beam attenuation and switching device, where a structure is relatively simple, assembly is also relatively simple, and production technologies of the polymer polarization grating, the quarter-wave plate, and the switchable polarization grating are relatively simple; therefore, embodiments of the present invention may simplify a production technology, reduce a cost, and improve performance.