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Optical echo wall micro-cavity structure modified by focused ion beam technology and method for modifying same by focused ion beam technology

A technology of focusing ion beams and whispering galleries, applied in optics, optical components, metal processing equipment, etc., can solve problems such as reducing physical strength and destroying optical fiber structures

Active Publication Date: 2015-12-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both of the above two methods need to set a processing surface on the optical fiber, and then set an annular groove on the processing surface to form an optical whispering gallery microcavity, which destroys the structure of the optical fiber itself and reduces its physical strength.

Method used

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  • Optical echo wall micro-cavity structure modified by focused ion beam technology and method for modifying same by focused ion beam technology
  • Optical echo wall micro-cavity structure modified by focused ion beam technology and method for modifying same by focused ion beam technology

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Embodiment Construction

[0021] An optical whispering gallery microcavity structure modified and processed by a focused ion beam process, including an optical fiber 1, the innovation of which is: an annular region 2 is arranged in the cladding of the optical fiber 1, and the axial direction of the annular region 2 is in the same direction as the optical fiber The radial direction of 1 is parallel, the axial thickness of the annular region 2 is greater than the core diameter of the optical fiber 1, and the radial width of the annular region 2 is smaller than the core diameter; the annular region 2 intersects the core; the core is in the annular region 2 The position in the axial direction is located within the axial span of the annular region 2; the refractive index of the annular region 2 is greater than the core refractive index; the corresponding region on the optical fiber 1 is modified by the focused ion beam process in the annular region 2 properties; the annular region 2 forms an optical whisperi...

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Abstract

Provided is an optical echo wall micro-cavity structure modified by focused ion beam technology. The optical echo wall micro-cavity structure comprises a fiber. An annular area is disposed in the cladding of the fiber, has a refractive index over that of a fiber core, and is formed by modifying a corresponding area on the fiber by using focused ion beam technology. The annular area forms the optical echo wall micro-cavity structure. The optical echo wall micro-cavity structure has a beneficial effect that the optical echo wall micro-cavity structure is directly formed in the fiber and the surface of the fiber is not damaged.

Description

technical field [0001] The invention relates to a fiber-type optical whispering gallery microcavity structure, in particular to an optical whispering gallery microcavity structure and method modified and processed by a focused ion beam process. Background technique [0002] Different from the resonant cavity formed by the Fresnel reflection of the medium interface in the traditional interferometer, the optical whispering gallery microcavity confines the light in the resonant cavity through the continuous total reflection of the boundary of the medium cavity, so it has an ultra-high quality factor and an ultra-small The characteristics of the mode volume have important application prospects in the fields of nonlinear optics, cavity quantum electrodynamics, ultra-high resolution detection, and ultra-low threshold lasers. [0003] Typical optical whispering gallery microcavities include microspheres, microdisks, and microrings, etc., which are generally processed in crystal mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293B23K26/38
CPCB23K26/38G02B6/2934
Inventor 朱涛史磊磊
Owner CHONGQING UNIV