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Liquid-clad micro-nano fiber long-period grating with adjustable broadband

A technology of long-period gratings and micro-nano fibers, which is applied in cladding fibers, grating fibers, optical waveguides, etc., and can solve problems such as poor tunability

Active Publication Date: 2019-11-08
YANSHAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a liquid-clad micro-nano optical fiber long-period grating with adjustable broadband, so as to solve the problem of poor tunability of long-period optical fiber gratings in the prior art

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] Such as figure 1 The schematic diagram of the structure of the liquid-clad micro-nano fiber long-period grating provided by the embodiment of the present invention is shown: a liquid-clad micro-nano fiber long-period grating with adjustable bandwidth, including a micro-nano fiber 2, a quartz capillary 4 and a cladding liquid 6. Both the micro-nano optical fiber 2 and the cladding liquid 6 are encapsulated in the quartz capillary 4; the micro-nano optical fiber 2 is horizontally suspended at the center of the quartz capillary 4; the cladding liquid 6 is filled around the micro-nano optical fi...

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Abstract

The invention, which belongs to the technical field of fiber gratings, in particular relates to a liquid-clad micro-nano fiber long-period grating with the adjustable broadband. The liquid-clad micro-nano fiber long-period grating comprises a micro-nano fiber, a quartz capillary and cladding liquid. The micro-nano fiber and the cladding liquid are encapsulated in the quartz capillary; the micro-nano fiber is horizontally suspended at the center of the quartz capillary; and the space around the micro-nano fiber is filled with the cladding liquid. The micro-nano fiber is an intermediate nano-fiber portion after tapering of a single-mode fiber; and single-mode fibers are formed at the end portions of two sides extending out of the quartz capillary symmetrically after single-mode fiber tapering. A long-period grating is engraved at the middle part of the micro-nano fiber. Therefore, a problem of poor tunability of the long-period fiber grating in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of optical fiber gratings, and in particular relates to a liquid-clad micro-nano optical fiber long-period grating with adjustable broadband. Background technique [0002] As a new type of optical passive device, long-period fiber gratings have the advantages of small size, low insertion loss, no back reflection, and easy integration and connection with other optical devices. Very broad application prospects. [0003] At present, the more common LPFGs are LPFGs made of optical fibers doped with highly nonlinear materials, and LPFGs coated with polymers with high thermo-optic and electro-optic effects on the fiber cladding. For example, Jun KyeBae and others achieved a thermo-optic tuning range of 30nm by segmentally heating the long-period fiber grating whose core was doped with B-Ge; Nan-Kuang Chen of the United Nations National University et al. Coated on the surface of the long-period fiber grating whos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02B6/032
CPCG02B6/0208G02B6/02114G02B6/02195G02B6/02204G02B6/032G02B2006/0325
Inventor 金娃吴淑慧李霞毕卫红付兴虎付广伟
Owner YANSHAN UNIV
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