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Microballoon resonance filter integrated into suspension core fiber

A suspension core and filter technology, applied in cladding fibers, optical waveguides, light guides, etc., can solve the problems of large device size and low efficiency, and achieve the effects of firm packaging, high repetition rate, and low difficulty

Active Publication Date: 2016-05-04
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prism and integrated waveguide excitation methods are large in size and not very efficient

Method used

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  • Microballoon resonance filter integrated into suspension core fiber
  • Microballoon resonance filter integrated into suspension core fiber
  • Microballoon resonance filter integrated into suspension core fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] combine figure 1 , Figure 2(a), image 3 and Image 6 , a microsphere resonator filter integrated in a suspended single-core optical fiber is composed of a suspended core optical fiber 6 with a large air hole and a microsphere cavity 4 . The core diameter of the suspended core fiber is 9 microns, and the diameter of the microsphere is 100 microns. The microsphere 4 can be sucked into the air hole under a certain air pressure, and the orientation of the single-core optical fiber is suspended by rotating, so that the core position is downward, and the microsphere is heated at the position 8 of the microsphere by arc discharge or hydrogen-oxygen flame, and the heating temperature is controlled. Without deforming the fiber, the microspheres can be firmly bonded to the fiber core. The two ends of the suspension core fiber 6 are aligned with the core of the single-mode fiber 7 by an arc welding machine, and are directly coupled; Strong evanescent field, so it can resonate...

Embodiment 2

[0035] Combined with Figure 2(b), Figure 4 and Figure 5 , an upload / download filter integrated in a suspended multi-core fiber is composed of a suspended double-core fiber 6 with a large air hole and a microsphere cavity 4 . The core diameter of the suspended core fiber is 10 microns, and the diameter of the microsphere is 150 microns. The microsphere 4 can be sucked into the air hole under a certain air pressure. By rotating and suspending the orientation of the double-core optical fiber, one fiber core is positioned downward, and the microsphere is heated by arc discharge or hydrogen-oxygen flame to control the heating temperature. The heating part 9 is collapsed, and the microspheres can be firmly bonded to the two fiber cores at the same time. The two cores 5-1 and 5-2 at both ends of the suspended double-core optical fiber 6 are aligned with the core of the single-mode optical fiber 7 by a welding machine, and directly coupled; when the laser light source is coupled f...

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Abstract

The invention discloses a microballoon resonance filter integrated into a suspension core fiber. The microballoon resonance filter comprises the suspension core fiber and a microballoon, wherein the suspension core fiber comprises a cladding and a fiber core, the cladding is of an annular structure, the cladding is internally provided with an air hole, the internal diameter of the cladding is 50 to 250 micrometers, the difference between the internal diameter of the cladding and the external diameter of the cladding is 20 to 40 micrometers, the fiber core is suspended on the inner wall of the cladding, the diameter of the fiber core is 9 to 13 micrometers, and the refractive index of the fiber core is greater than the perpendicular incidence rate of the cladding; and the diameter of the microballoon is 50 to 200 micrometers, the refractive index of the microballoon is greater than and equal to that of the fire core, the microballoon is disposed inside the cladding, the microballoon is adhered to the fiber core through local heating, and the two ends of the suspension core fiber and a single-mode fiber are aligned and directly coupled by use of the fiber core. The filter provided by the invention has the advantages of firm and compact packaging, high integration and high anti-interference capability, thereby being suitable for long-term stable work.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, and in particular relates to a microsphere resonant filter integrated in a suspended core optical fiber for uploading / downloading filtering and physical quantity sensing and measurement. Background technique [0002] Microsphere resonators are spherical optical resonators with radii ranging from a few microns to hundreds of microns. Through continuous total reflection on the surface of the microsphere, the microsphere cavity confines the light near the equatorial plane and orbits along the great circle, stimulating a unique Whispering Gallery Mode (WGM or WG for short). Due to the effect of total reflection, the light field outside the sphere is an evanescent field. This light wave is a non-propagating wave, so the light that leaks out of the microsphere is extremely weak, so it can confine the light in a small volume for a long time. There is almost no loss, so the microsphere res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293G02B6/02
CPCG02B6/02328G02B6/02366G02B6/2934G02B6/29341
Inventor 关春颖杨菁徐义航王鹏飞史金辉苑立波
Owner HARBIN ENG UNIV
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