Method for obtaining light source spectra

A light source and spectrum technology, applied in the field of spectrum measurement, to achieve real-time continuous spectrum analysis, light weight, and easy portability

Active Publication Date: 2014-06-11
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

However, how to accurately establish a spectrum determination method based on integrated optical waveguide optical modulation technology without determining the waveguide structure parameters, dispersion characteristics and electrode structure parameters of the integrated optical waveguide optical modulator is still a problem that needs to be studied. As far as we know, there are no related reports

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  • Method for obtaining light source spectra
  • Method for obtaining light source spectra
  • Method for obtaining light source spectra

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[0033] The first embodiment: as figure 1 The invention discloses a spectrum determination method based on integrated optical waveguide optical modulation technology, and provides the measurement results of two infrared laser spectra, which proves the reliability and accuracy of the simple and cheap new method. Such as figure 2 and image 3 It shows a light source spectrum acquisition device based on integrated light waveguide light modulation technology, which includes: light source 1, integrated light waveguide light modulator 2, photodetector 3, signal control and processing module 4, light source and follow-up equipment 5, the following uses The device for obtaining the spectrum of the light source further describes the method for obtaining the spectrum of the light source in the present invention. The method includes the following steps:

[0034] Step 1: Optically connect the monochromatic light source 1 and photodetector 3 of known wavelength to the optical input end a...

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Abstract

The invention discloses a method for obtaining light source spectra. The method includes the following steps that: a plurality of monochromatic light sources of which the wavelength is known are utilized to measure half-wave voltage of an integrated optical waveguide electro-optic modulator under different wavelengths, and the monotonic function relationship between the half-wave voltage and the wavelengths is established; and after an unknown light source is connected with the same integrated optical waveguide electro-optic modulator, an interference pattern of linear change with modulation voltage of the integrated optical waveguide electro-optic modulator is measured, and the measured interference pattern is subjected to Fourier transform, such that a distribution curve of incident light power with the half-wave voltage is obtained, and a distribution curve of the incident light power with the wavelengths can be obtained through utilizing the established monotonic function relationship between the half-wave voltage and the wavelengths, and then, the spectra of the unknown light source can be obtained. With the method of the invention adopted, the determination of various kinds of parameters of the integrated optical waveguide electro-optic modulator is not required. The method is advantageous in simple operation, high precision and strong anti-interference ability, and can be used for determining the spectra of light sources and measuring visible-infrared absorption spectra and fluorescence spectra of substances.

Description

technical field [0001] The invention belongs to the technical fields of spectral measurement technology, integrated light wave conductive light modulation technology, discrete Fourier transform technology, etc., and relates to a method for obtaining light source spectrum based on integrated light wave conductive light modulation technology. Background technique [0002] Commercialized Fourier transform spectrometers have high spectral resolution and signal-to-noise ratio, and are widely used in many fields such as environmental monitoring, food safety testing, product quality testing, chemical defense and anti-terrorism, biomedicine, petrochemical, space exploration, and material research and development. widely used. However, commercialized Fourier transform spectrometers are composed of separate optical components, which are bulky, expensive, and poor in shock resistance, and are not suitable for portability and on-site rapid detection. In order to meet the practical need...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/443G01J3/42
Inventor 祁志美李金洋逯丹凤
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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