Broadband light splitting and frequency splitting element and preparation method thereof

Abstract

The invention relates to the fields of optical technology and high-frequency radio receiving technology, and specifically discloses a broadband light-splitting and frequency-dividing element and a preparation method thereof. The traditional sandwich structure of the present invention is used to produce a broadband light splitter and frequency division element with transparent wave characteristics, and ensure that the surface of a single quartz fiber skin material has a level of mechanical parallelism, and then add cured resin on the surface of the quartz fiber skin material , the requirements for optical surface precision are achieved by the cured resin. For the analysis and design of millimeter wave transmission characteristics, the reinforcement layer formed by the solidified layer, the quartz fiber skin material, and the core interlayer are comprehensively analyzed and designed, and the thickness of the core interlayer is adjusted to make the reinforcement The reflections of the layers cancel each other out, so that the characteristics of high-frequency broadband wave transmission can be obtained in a wide bandwidth. For optical signal reflection properties, adding the dielectric film on the surface of the high-temperature-resistant resin can ensure high reflectivity of optical signals.

Description

technical field [0001] The invention relates to the fields of optical technology and broadband radio reception, in particular to a broadband light-splitting and frequency-dividing element and a preparation method thereof. Background technique [0002] With the improvement of space target detection requirements, in order to enhance the listening and tracking capabilities of ground-based space target monitoring equipment, new technical requirements are put forward for ground-based radio detection equipment: (1) The equipment has a wide receiving frequency band such as 20GHz-120GHz , with a variety of signal demodulation and recording functions to adapt to the reception of a variety of different space targets; (2) the ability to detect high-frequency and high-frequency signals of space targets needs to be improved urgently; (3) have high receiving sensitivity, frequency Domain and airspace automatic search and tracking functions to meet the needs of finding targets. However, a...

AI Technical Summary

Problems solved by technology

The method of coating the surface of the wave-transparent material with a dielectric film cannot achieve broadband permeability, and can only ensure efficient transmission of one or several frequency bands.

Because the metal grid structure must ensure the reflection of high-frequency millimeter-wave signals, the spacing of the grid is too fine, which will cause the diffraction effect of the optical signal and cannot be imaged.

Images