Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76779
Title: Suspended core type on-line optical fiber micro unit with micro-nano core diameter and manufacturing method thereof
Other Titles: 具有微纳芯径的悬挂芯型在线光纤微单元及其制备方法
Authors: Jin, W 
Wang, C 
Issue Date: 30-Nov-2016
Source: 中国专利 ZL 201410223306.3 How to cite?
Abstract: The invention provides a suspended core type on-line optical fiber micro unit with a micro-nano core diameter. The suspended core type on-line optical fiber micro unit with the micro-nano core diameter comprises an optical fiber cladding layer and a fiber core. An air cavity is formed between the optical fiber cladding layer and the fiber core. The air cavity comprises a main cavity section and transition sections which are located on the two sides of the main cavity section in the axial direction of an optical fiber. The width, in the radial direction of the optical fiber, of each transition section gradually becomes larger in the axial direction, close to the main cavity section, of the optical fiber. The portion, located on each transition section, of the optical fiber cladding layer comprises an outer surface layer and a photonic crystal layer located in the outer surface layer, wherein the thickness of the photonic crystal layer gradually becomes smaller in the axial direction, close to the main cavity section, of the optical fiber. The diameter of the portion, located on each transition section, of the fiber core gradually becomes smaller in the direction close to the main cavity section. The diameter of the portion, located on the main cavity section, of the fiber core is at the submicron level. A support membrane connected with the optical fiber cladding layer and the fiber core is arranged in the air cavity. Due to the structure of the transition sections and the main cavity section, the suspended core type on-line optical fiber micro unit with the micro-nano core diameter has the gradually-changed form, a large evanescent field can be formed in the optical fiber, and then the suspended core type on-line optical fiber micro unit can be connected into a single mode fiber system in a low-loss and gradually-changed mode.
本发明提供一种具有微纳芯径的悬挂芯型在线光纤微单元,包括光纤包层和纤芯,光纤包层与纤芯之间具有空气腔,空气腔包括主腔段以及沿光纤轴向位于主腔段两侧的过渡段;过渡段沿光纤径向的宽度向靠近主腔段的轴向方向逐渐增大;光纤包层位于过渡段的部分包括外表层和位于外表层内的光子晶体层,光子晶体层的厚度沿靠近主腔段的光纤轴向方向逐渐减小;纤芯位于过渡段部分的直径向靠近主腔段的方向逐渐减小;纤芯位于主腔段部分的直径为亚微米级;空气腔内设有连接光纤包层与纤芯的支撑膜。本发明具有微纳芯径的悬挂芯型在线光纤微单元的过渡段及主腔段结构,使其具有缓变的形态,在光纤内可以形成较大的消逝场;从而低损、缓变地接入单模光纤系统。
URI: http://hdl.handle.net/10397/76779
Rights: Assignee: Shenzhen Res Inst The Hong Kong Polytechnic University
Appears in Collections:Patent

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