Spectrum analyzer and preparation method of G-T resonant cavity array of spectrum analyzer

Abstract

The invention discloses a spectrum analyzer, which comprises a two-dimensional G-T resonant cavity array and a two-dimensional CCD (charge coupled device) type detector relative to the two-dimensional G-T resonant cavity array. The reflectivities at the front end of the G-T resonant cavity array are gradiently changed, the high reflectivity is fixed at the rear end, and the relative position between the G-T resonant cavity array and the CCD type detector is regulated so that a primary diffraction pattern of the two-dimensional G-T type detector is imaged in the CCD type detector, and finally the wavelength and the intensity of the signal light are read by the CCD type detector, so that the CCD type detector is scanned on two dimensionalities, thereby the measurement range and the resolution ratio of the spectrum analyzer are greatly broadened and the scanning speed is increased; and the preparation size of the spectrum analyzer is greatly reduced, and the preparation cost is effectively reduced, so that the spectrum analyzer is beneficial for volume production.

Description

technical field [0001] The invention relates to the technology in the field of spectrum analyzers, in particular to a spectrum analyzer with an ultra-broadband wavelength range and ultra-high resolution and a manufacturing method thereof for a G-T resonant cavity array. Background technique [0002] Spectrum analyzers with different scanning spectral ranges and resolving power can be used in almost every field. The missile cruise of the military system, the bit error rate of the signal transmission in the commercial Dense Wavelength Division Multiplexing (DWDM) system is closely related to the stability of the optical signal wavelength. In the production of scientific instruments such as lasers and those sensors that are sensitive to the working wavelength, it is often necessary to calibrate their working wavelength. And the most important thing is to have a small, easy to move, low cost, low power consumption, and high resolution spectrum analyzer. [0003] The most commo...

AI Technical Summary

Problems solved by technology

However, the nature of its one-dimensional structure leads to the fact that such a spectrometer can only work in a very short wavelength range.

And because of the phase dispersion capability of two adjacent channels is proportional to its optical path, the resolving power of the arrayed waveguide grating is very limited

Images