Device for realizing wavelength selective switch function

Abstract

The invention discloses a device for realizing functions of a wavelength selective switch, and relates to the field of optical communication. The device comprises a collimator array, a polarization processing unit, an optical path processing unit, a spatial light lens unit and a switching chip, wherein the collimator array is provided with multiple output ports, a first input port and a second input port; the polarization processing unit is used for respectively converting two pieces of signal light inputted via the first input port and the second input port into incident S-polarized light andincident P-polarized light; the optical path processing unit includes a reflecting mirror and polarization beam splitter (PBS) which are arranged in a spacing mode; the spatial light lens unit is used for collecting the incident S-polarized light and the incident P-polarized light on the switching chip along the vertical direction; and the switching chip is used for processing the incident S-polarized light and the incident P-polarized light collected on the switching chip to obtain reflected S-polarized light and reflected P-polarized light and transmitting the reflected S-polarized light and the reflected P-polarized light to any two output ports on the collimator array. The device is simple in structure and low in cost, and can realize functions of the wavelength selective switch with2*N ports.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a device for realizing the function of a wavelength selective switch. Background technique [0002] The business volume carried by the core optical network and the single-channel interface rate required by the router are increasing at an astonishing rate of 30% to 60% per year. Reducing costs and improving energy efficiency are how fiber optic transmission and optical networking technologies are meeting growing business demands. However, optical communication is approaching the fundamental spectral efficiency limit of single-mode fiber, and the growth capability of conventional WDM (Wavelength Division Multiplexing) networks on a fixed frequency grid is very limited. Although multi-bit / symbol modulation formats are commercially available, coupled with coherent optical reception and polarization division multiplexing, it can achieve up to 20Tb / s fiber link capacity. However,...

AI Technical Summary

Problems solved by technology

However, due to the nonlinear distortion caused by the optical Kerr effect, etc., it is very challenging to further improve the capacity and spectral efficiency.

Images