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Optical-fiber type multi-wedge block fee cable wavemeter

A wavelength meter, fiber-optic technology, applied in the field of fiber-optic multi-wedge Fischer wavelength meters, can solve the problems of difficult optical tuning and alignment, difficult measurement accuracy, multiple optical components, etc., to achieve convenient fusion, reduce Difficulty, the effect of reducing the size of the space

Inactive Publication Date: 2012-10-03
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

This technique only uses a Feisault wedge to obtain the interference ring, and it is not easy to achieve high measurement accuracy
On the other hand, the laser transmission between the optical components of ordinary wavelength meters requires more optical components, see the prior art [EP0992093], such a structure is more difficult for optical tuning and alignment

Method used

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  • Optical-fiber type multi-wedge block fee cable wavemeter
  • Optical-fiber type multi-wedge block fee cable wavemeter
  • Optical-fiber type multi-wedge block fee cable wavemeter

Examples

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Embodiment Construction

[0016] See figure 1 , figure 1 It is a schematic diagram of the structure of the fiber optic multi-wedge Fischer wavelength meter of the present invention. The main components are standard laser source 1, fused silica fiber 4, first fiber coupler 3, second fiber coupler 5, beam expander collimator lens group 6, Feisau interferometer array 7, linear CCD 8, signal processor 9 . The positional relationship of the above parts is as follows:

[0017] The standard laser source 1 and the laser to be measured 2 enter the fused silica fiber 4 through the first fiber coupler 3, and are transmitted to the second fiber coupler 4 for beam splitting. The split laser beam is incident on the corresponding beam through the beam expander collimator group 6 的Fisau Interferometer Array 7. The linear CCD 8 receives the Feisau interference fringes and converts them into electrical signals, which are processed by the signal processor 9 to accurately calculate the laser center wavelength based on the d...

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PUM

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Abstract

The invention relates to an optical-fiber type multi-wedge block fee cable wavemeter, which is composed of a standard laser source, a fused quartz optical fiber, an optical fiber coupler, an expanded beam collimation lens group, a fee cable interferometer array, a CCD (Charge Coupled Device) array and a signal processor. A plurality of fee cable wedge blocks with different thicknesses are combined to be used, the rough measurement and the accurate measurement of wavelength are respectively realized, and therefore the resolution ratio of the wavemeter is increased. The fused quartz optical fiber and optical fiber coupler beam splitting are adopted, so that the spacing size and the complexity of the wavemeter are effectively reduced. The wavemete has a compact structure and can accurately and conveniently measure the centre wavelength of continuous laser and pulse laser at a high speed.

Description

Technical field [0001] The invention relates to wavelength measurement, in particular to an optical fiber multi-wedge Fischer wavelength meter, which can measure laser wavelength conveniently and with high precision. Background technique [0002] The Feisau interferometer is a commonly used instrument for measuring the wavelength of laser light, see the prior art [Chinese Patent Publication No. 1077530]. This technique only uses a Feisau wedge to obtain the interference ring, and it is not easy to achieve high measurement accuracy. On the other hand, the use of spatial coupling technology for laser transmission between optical elements of ordinary wavelength meters requires more optical elements. See the prior art [EP0992093]. Such a structure is more difficult for optical tuning and alignment. Summary of the invention [0003] The purpose of the present invention is to provide an optical fiber multi-wedge Fischer wavelength meter, which should have a small volume and can accurat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J9/02
Inventor 袁志军张海波周军楼祺洪魏运荣何兵漆云凤杜松涛
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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