Ultrahigh-precision wavelength resolver based on Fano resonance

A resolver, ultra-high technology, applied in the field of wavelength resolvers, can solve the problem of limited resolution of wavelength resolvers, and achieve the effect of compact structure, stable and reliable system, and high resolution

Inactive Publication Date: 2016-06-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the slope of a single microring or MZI filter spectral line, the resolution of the wavelength resolver based on this type of device is limited. To obtain higher resolution, it is necessary to use a spectral line with a larger slope edge

Method used

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  • Ultrahigh-precision wavelength resolver based on Fano resonance
  • Ultrahigh-precision wavelength resolver based on Fano resonance
  • Ultrahigh-precision wavelength resolver based on Fano resonance

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Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the principle that the present invention is based on is to use the filter curves 1 and 2 of Fano resonance to form an "X"-shaped spectrum. In this spectrum range, the wavelength physical quantity of the light to be measured is only related to the power ratio change of the two filter spectral lines. , regardless of the power of the input light. The physical quantity of the wavelength of the light to be measured can be obtained by detecting the magnitude of the optical power at the output end.

[0040] Such as figure 2 As shown, the optical signal to be measured is divided into multiple equal beams of light by the waveguide beam splitter and enters multiple Fano filter modules respectively. The output optical signal is processed by PD to obtain the physical quantity of the measured optical signal wavelength.

[0041] Such as image 3 As shown, the waveguide beam splitter is based on the principle of multimode interference, and adopts linear ...

Embodiment 2

[0047] Such as figure 1 As shown, the principle that the present invention is based on is to use the filter curves 1 and 2 of Fano resonance to form an "X"-shaped spectrum. In this spectrum range, the wavelength physical quantity of the light to be measured is only related to the power ratio change of the two filter spectral lines. , regardless of the power of the input light. The physical quantity of the wavelength of the light to be measured can be obtained by detecting the magnitude of the optical power at the output end.

[0048] Such as figure 2 As shown, the optical signal to be measured is divided into multiple equal beams of light by the waveguide beam splitter and enters multiple Fano filter modules respectively. The output optical signal is processed by PD to obtain the physical quantity of the measured optical signal wavelength.

[0049] Such as image 3 As shown, the waveguide beam splitter is based on the principle of multimode interference, and adopts linear ...

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Abstract

The invention discloses an ultrahigh-precision wavelength resolver based on Fano resonance. A waveguide beam splitter is connected with an input end of a plurality of Fano filters; output ends of the Fano filters are connected to a signal processing module through the respective Fano filters; light to be detected is split into a plurality of bundles of light through the waveguide beam splitter; the plurality of bundles of light enter the Fano filters respectively, and are filtered, and then signals are output to a Ge-Si photoelectric detector; each Fano filter is internally provided with a TiN thermal electrode; and a Fano filtering spectral line is generated by adjusting the output of the Fano filters through heating the TiN thermal electrodes, so that an X-shaped frequency spectrum is formed. The ultrahigh-precision wavelength resolver based on the Fano resonance can realize ultrahigh-precision wavelength detection in an X frequency spectrum range; and the device is made of a common SIO silicon sheet, and has good CMOS (Complementary Metal Oxide Semiconductor) technical compatibility and can be integrated in a large scale.

Description

technical field [0001] The invention relates to a wavelength resolver, in particular to an ultra-high precision wavelength resolver based on Fano resonance. Background technique [0002] The wavelength of light is an important physical quantity in physical detection technology. Many optical detection systems use the variation of light wavelength to achieve measurement, and the typical one is the fiber grating sensing system. Wavelength analysis technology is an analysis method that firstly measures other physical quantities that have a certain corresponding relationship with the wavelength, and then gives the wavelength or the amount of wavelength change from the functional relationship. People have developed a variety of wavelength resolvers by using various methods. There are mainly spectrometer analysis methods, interference methods, filtering methods, and tunable light source wavelength matching methods. Slow and inconvenient to use. With the development of integrated...

Claims

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Application Information

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IPC IPC(8): G01J9/02
CPCG01J9/0246
Inventor 王根成戴庭舸杨梅李宇波王曰海杨建义
Owner ZHEJIANG UNIV
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