A Customized On-Chip Spectrometer Based on Bragg Gratings

Abstract

The invention discloses a customized spectrometer based on a Bragg grating. The present invention includes an end-face coupling input port, a first input waveguide, and a first-stage filter channel A 1 , the second filter channel A 2 ...Nth stage filter channel A N , a heating electrode, a first welding pad, a second welding pad, an output waveguide and an output port. First stage filter channel A 1 , the second filter channel A 2 ...Nth stage filter channel A N Cascaded sequentially, the output end of the previous stage filter channel and the input end of the subsequent stage filter channel are connected through the connection input waveguide, and the end-face coupling input port is connected to the first stage filter channel A through the first input waveguide 1 The input terminal, the Nth stage filter channel A N The output terminal of is connected to the output port through the output waveguide. The invention has the advantages of small size, low power consumption, small transmission loss, small crosstalk, high resolution, super large bandwidth, complete system, easy to use and the like.

Description

technical field [0001] The present invention relates to an on-chip spectrometer with high resolution and ultra-large bandwidth, and more specifically to a customized on-chip spectrometer based on Bragg gratings. An on-chip spectrometer composed of precision filters designed with ring resonators. Background technique [0002] A spectrometer is an indispensable tool in spectral analysis. Traditional spectrometers have disadvantages such as bulky, high cost, and complex equipment. Miniaturization of spectrometers has become the general trend. Among them, silicon-based photonics technology has good integration performance and mature processing technology, which provides a low-cost, high-integration solution for the development of on-chip spectrometers. The on-chip spectrometer reduces the size of the device to the chip level, and has the advantages of high portability, low power consumption, and low cost. On-chip spectrometers have broad application prospects in life health, ...

AI Technical Summary

Problems solved by technology

For the arrayed waveguide grating type spectrometer on silicon substrate, although the repeatability is good, the integration degree and the stability are high, but the loss and crosstalk between channels must be considered

As for the silicon-based multimode waveguide on-chip spectrometer, it is still in the research stage

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