Hollow-core antiresonance photonic crystal fiber coupler and application thereof

A photonic crystal fiber, anti-resonance technology, applied in the coupling of optical waveguides, multi-layer core/clad fibers, clad fibers, etc., can solve the problems of coupling efficiency and transmission loss are not ideal, to ensure the advantages of characteristics , The effect of low welding loss and improved accuracy

Active Publication Date: 2018-09-18
深圳市同昇光电有限公司
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Problems solved by technology

But its coupling efficiency and transmission loss are still not ideal

Method used

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  • Hollow-core antiresonance photonic crystal fiber coupler and application thereof
  • Hollow-core antiresonance photonic crystal fiber coupler and application thereof
  • Hollow-core antiresonance photonic crystal fiber coupler and application thereof

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Embodiment Construction

[0026] In order to express the purpose and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The hollow-core anti-resonance photonic crystal fiber coupler proposed by the invention is composed of two side-polished hollow-core anti-resonance optical fibers. Starting from the silica outer cladding of the hollow-core antiresonant fiber, it is gradually ground and polished until the core is connected with the external environment, and then the polished surfaces of the two fibers are bonded together, and a fiber coupler is made through tapering. The cores of the hollow-core anti-resonant optical fibers communicate with each other. Based on the structure of the hollow-core antiresonant photonic crystal fiber coupler, the structure can be optimized in order to improve the coupling efficiency of the coupler.

[0028] like figure 1 As shown, it is a schematic diagram...

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Abstract

The invention belongs to the technical field of fiber couplers, and particularly relates to a hollow-core antiresonance photonic crystal fiber coupler and application thereof. The fiber coupler is formed by two hollow-core antiresonance fibers with polished side faces. The basic structure of each hollow-core antiresonance fiber comprises a fiber core, a circle of micro-capillary inner covering layer around the fiber core and an outer covering layer covering the exterior of the micro-capillary inner covering layer. The polished faces of the hollow-core antiresonance fibers are arranged on the outer covering layer and are attached to each other and subjected to fusion or tapering, so a fiber coupler is manufactured. Before the tapering or during the tapering, the ring distance of two rings near the attached faces is reduced or increased, so the mode coupling of the fiber core of the two hollow-core antiresonance fibers is optimized. The fiber coupler is simple in design and highly practical, can be used for pulse laser, especially, full-fiber coupling and laser beam splitting of femtosecond laser and can be applied in a hollow-core fiber gyroscope to replace a solid fiber coupling module.

Description

technical field [0001] The invention belongs to the technical field of optical fiber couplers, and in particular relates to hollow-core anti-resonant photonic crystal optical fiber couplers and applications thereof. Background technique [0002] Optical fiber coupler is a kind of optical fiber passive device used to transmit and distribute optical signals. It is one of the most widely used optical passive devices in optical fiber systems and plays a pivotal role in the field of optical fiber communication and optical fiber sensing. Optical fiber couplers generally have the following characteristics: first, the device is composed of optical fibers and is an all-fiber device; second, the demultiplexing and multiplexing of the optical field are mainly realized through mode coupling; third, the optical signal transmission is directional. With the wide use of various fiber optic communication and fiber optic sensor devices, the status and role of fiber optic couplers are becoming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/032G02B6/02G02B6/036G02B6/24
CPCG02B6/02342G02B6/032G02B6/036G02B6/24G02B6/02328G02B6/02366G02B6/2826G02B6/02357
Inventor 肖力敏郝阳
Owner 深圳市同昇光电有限公司
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