Optical fiber coupling White cavity
A fiber coupling and white cavity technology, which is applied in the coupling of optical waveguides, measurement of color/spectral characteristics, optics, etc., can solve the problems of unstable performance and large loss, and achieve the effect of simple structure, small loss, and improved detection sensitivity.
Inactive Publication Date: 2011-04-06
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology
[0005] In order to overcome the shortcomings of the existing space-coupled White cavity, such as large loss and unstable performance, a fiber-coupled White cavity is designed
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[0029] see figure 1 As shown, the present invention provides a fiber-coupled White cavity, comprising:
[0030] A rigid plane base 11, that is, the base is required to be inelastically deformed and guaranteed to be flat, which can be modified by using a small optical platform, which is convenient for fixing various optical devices on the basis of effectively ensuring a rigid plane.
[0031] A small concave mirror adjustment frame 3, this small concave mirror adjustment frame 3 is fixed on the side above the base 11, there is a circular small groove 31 in the middle of the inner side of this small concave surface mirror adjustment frame 3, in the circular small groove 31 diameters The upper and lower symmetrical positions outside have two circular through holes 32, and the center of the circular through holes 32 is located on the extension line of the diameter of the circular small groove 31 and the spacing of the outer edges of the circular through holes 32 is less than the la...
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Abstract
The invention discloses an optical fiber coupling White cavity, which comprises a rigid plane base, a small concave mirror adjusting frame, a small concave mirror, an upper optical fiber collimating lens, a lower optical fiber collimating lens, a translation table, a big concave mirror adjusting frame, a big concave mirror and a stainless steel mesh outer cover. The small concave mirror adjusting frame is fixed at one side on the base; the middle of the inner side of the small concave mirror adjusting frame is provided with a round small groove; the upper part and the lower part which are symmetric to each other and out of the diameter of the round small groove are provided with two round through holes, and centres of the two round through holes are arranged on an extended line of the diameter of the round small groove; the small concave mirror is embedded in the small groove of the small concave mirror adjusting frame; the upper optical fiber collimating lens and the lower optical fiber collimating lens are respectively arranged in the round through holes of the small concave mirror adjusting frame; the translation table is opposite to the small concave mirror adjusting frame, and fixed at the other side on the base opposite to the small concave mirror adjusting frame; the big concave mirror adjusting frame is fixedly arranged on the translation table, and the middle of the inner side of the big concave mirror adjusting frame is provided with a round groove; the big concave mirror is embedded in the round groove of the big concave mirror adjusting frame; and the stainless steel mesh outer cover is covered and buckled out of the small concave mirror adjusting frame and the big concave mirror adjusting frame and fixed with the base.
Description
technical field [0001] The invention relates to a fiber-coupled White cavity, in particular to design a fiber-coupled White cavity that can be directly used in a fiber optic gas detection system to increase the gas absorption optical path, thereby improving detection accuracy. Background technique [0002] At present, the optical fiber detection system has been partially realized and mass-produced, and is developing towards a new detection direction. The gas detection system based on spectral absorption technology is one of its important development directions. According to the principle of spectral absorption technology, the longer the optical path of light passing through the gas cell, the higher the detection sensitivity, and the structure of the White cavity can effectively improve the optical path of gas absorption. [0003] Existing White cavities are all based on spatially coupled structures, which can be divided into two coupling modes: reflective and transmissive. ...
Claims
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IPC IPC(8): G02B6/26G02B17/06G01N21/27
Inventor 薛力芳李芳刘育梁
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI