Multi-port wide-spectrum shaping device and computational spectrometer

Abstract

The invention discloses a multi-port wide-spectrum shaping device which is used for spectrum global sampling of computational spectral measurement. The ring resonator comprises a main ring resonator and a plurality of secondary ring resonators, the main annular resonator comprises an annular waveguide and a plurality of linear waveguides which are arranged outside the annular waveguide and are respectively coupled with the annular waveguide; the secondary annular resonators are arranged in the ring of the annular waveguide and are respectively coupled with the main annular coupler, the secondary annular resonators are sequentially arranged to form a curve, and any two adjacent secondary annular resonators are mutually coupled; one port of the linear waveguide is used as an input port of the device, and a plurality of other ports are used as output ports of the device; shaping parameters of the multi-port wide-spectrum shaping device are configured to enable transmission functions from the input port to the output ports to be different from one another. The invention also discloses a computational spectrometer. According to the invention, no extra multi-path light splitting device is needed, and the size and loss of the device are greatly reduced while the performance is maintained.

Description

technical field [0001] The invention belongs to the technical field of spectrum measurement, and in particular relates to a multi-port wide spectrum shaping device used for computational spectrum measurement. Background technique [0002] In order to detect the information of the target spectrum, the spectrometer emerges as the times require, which can recover any unknown input spectrum. Spectrometers are widely used in communications, materials science, astronomy, geographic science, remote sensing and other fields. With the development of the Internet of Things and smart devices, there is an urgent need for integrated spectrometers that can reconstruct spectra with a single measurement, such as smart wearable devices, portable medical devices, UAV remote sensing, and more. Most of the existing integrated spectrometers use a narrow-band spectrometer, that is, a narrow-band filter or a spectral grating is used to extract different wavelength components of the spectrum to be...

AI Technical Summary

Problems solved by technology

However, multi-channel optical splitting devices generally adopt a binary tree structure, which has large size, high insertion loss, and inflexible number of output ports (only for ), poor scalability

Especially for ultra-high-performance computing spectrometers, the required number of splitting channels M (that is, the number of broadband spectral shaping devices) is also large, resulting in a huge size of multi-channel splitting devices, and a new structure is urgently needed to solve the additional problems caused by splitting devices. size and loss

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