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Optical fiber F-P interferometer of metal-ceramic structure

An interferometer, metal technology, applied in interferometric spectroscopy, instruments, optical devices, etc., can solve the problems of difficult adjustment of the distance between the two ends, easy damage of bare optical fibers and glass capillaries, and difficulty in coating.

Inactive Publication Date: 2004-03-03
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is very difficult to coat the end face of the optical fiber, and the distance between the two ends is not easy to adjust
Therefore, the production of the sensor can only be made individually for use in the laboratory, and cannot be mass-produced; adhesive bonding, which causes hysteresis in the sensor response

Method used

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  • Optical fiber F-P interferometer of metal-ceramic structure
  • Optical fiber F-P interferometer of metal-ceramic structure

Examples

Experimental program
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Embodiment Construction

[0007] figure 1 Disclosed is an embodiment of the invention (see figure 1 ), the metal guide sleeve 2 is a tubular structure, and fine threads are processed in the center holes near both ends; the metal adjusting arm 3 is also a tubular structure, and the outer surface of its front part is processed with fine threads to match the inner fine threads of the metal guide sleeve 2, The rear part is a convex-concave outer surface with unequal diameters. The diameter of the center hole of the metal adjustment arm 3 near the end of the metal guide sleeve is processed slightly larger, and the ceramic tube 1 is installed; the inner hole of the ceramic tube 1 is a tapered hole; the optical fiber 4 is adjusted through the metal The center of the arm 3 is inserted into the ceramic tube 1 and fixed with glue. The end faces of the bonded ceramic tube 1 and optical fiber 4 are ground and then coated.

[0008] The metal-ceramic structure optical fiber F-P interferometer has simple structure,...

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Abstract

The invention relates to optical fiber sensor and optical fiber F-P interferometer used in optical measuring. The product is produced as following steps. Screw threads are made on both ends of metal guiding tube to connect two metal regulating arms. The center hole on front end of the metal regulating arm is a little larger in diameter where ceramic tube is installed on. The inner bore of ceramic tube is cone-shaped. Fiber is inserted into the ceramic tube through the metal regulating arm, then fixed up by using glue. The end surface of the ceramic tube and fiber as one-piece is ground and coated. The invented F-P interferometer possesses the merits of simple structure, easy to operate and production in large scale.

Description

technical field [0001] The invention belongs to optical components, in particular to an optical fiber F-P interferometer for optical fiber sensing and optical detection. Background technique [0002] In recent years, with the rapid development of optical fiber sensing technology, people have studied optical fiber sensors for measuring temperature, displacement and strain. The F-P interferometer used in this sensor is composed of two optical fibers coated on the end face inserted into the glass capillary. Since the outer diameter of the optical fiber is 125 μm and the diameter of the glass capillary is 200 μm, it is very difficult to insert the optical fiber into the glass capillary without damaging the end face of the fiber and to ensure that the end faces of the two optical fibers are centered in the glass capillary. In addition, it is very difficult to coat the end face of the optical fiber, and the distance between the two end faces is not easy to adjust. Therefore, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B9/02G01B11/16G01J3/26G01J3/45G01L1/24
Inventor 毕卫红孙宝臣任兴利
Owner YANSHAN UNIV