Grinding type optical fiber polarizer based on photonic crystal fiber

A photonic crystal fiber and polarization device technology, applied in the coupling of optical waveguides, etc., can solve the problems of complex manufacturing process and large size, and achieve the effects of high extinction ratio, small size, and easy processing.

Inactive Publication Date: 2010-10-13
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the problems of complex manufacturing process and large size of existing polarizing devices, and to provide a ground optical fiber polarizing device based on photonic crystal fiber

Method used

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  • Grinding type optical fiber polarizer based on photonic crystal fiber
  • Grinding type optical fiber polarizer based on photonic crystal fiber
  • Grinding type optical fiber polarizer based on photonic crystal fiber

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] like figure 1 As shown, a photonic crystal fiber-based ground fiber polarization device includes a photonic crystal fiber 1 and a fixing plate 3 . Polishing is performed on the side of the photonic crystal fiber 1 , and the polished part 2 of the photonic crystal fiber is pasted on the fixing piece 3 .

[0016] figure 2 It is a cross-sectional view of the polished part of the photonic crystal fiber. Photonic crystal fiber 1 is composed of core air holes 4 and cladding air holes 5 arranged periodically. In this embodiment, the length of the polished part 2 of the photonic crystal fiber is 4.5 cm, and the grinding depth is 50 μm.

[0017] The key technology for realizing the polarizing function in the present invention is:

[0018] Photonic crystal fiber is a new type of optical fiber. The core is made of pure silica, and the cladding is distributed with wav...

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Abstract

The invention relates to a grinding type optical fiber polarizer based on a photonic crystal fiber, which comprises photonic crystal fiber and a fixed plate. The grinding type optical fiber polarizer is characterized in that one side of the photonic crystal fiber is grounded, and the ground part of the photonic crystal fiber is adhered to the fixed plate. The length of the ground part of the photonic crystal fiber is 4-5cm, and the grinding depth is 48-56 mum. The structure formed through grinding one side of the photonic crystal fiber is asymmetric, and the structural asymmetry causes the leakage of one polarization component, and the other polarization component is still transmitted in the fiber core, thereby realizing the polarization. Since only the photonic crystal fiber of 4-5cm is needed, the whole polarizer has the advantages of convenient manufacture, compact structure and small size. In addition, the polarizer has a high extinction ratio and stable performance, and can be widely applied in the fiber optical communication and fiber optical sensor technology.

Description

technical field [0001] The invention belongs to the technical field of optical fiber polarization devices, and relates to a ground optical fiber polarization device based on photonic crystal fibers. Background technique [0002] With the rapid development of optical fiber communication and optical fiber sensing technology, the polarization state of light is becoming more and more important to the system and components. As an important branch of polarization devices, optical fiber polarization devices play a unique role. Fiber optic polarizers are favored due to their small size, light weight, low insertion loss, high extinction ratio, and strong compatibility with fiber optic systems. Fiber optic polarizers are widely used in passive devices such as optical isolators, optical circulators, optical switches, and optical modulators. In the optical device test system, the fiber polarizer can cooperate with other devices to obtain stable and flexible test conditions and realize...

Claims

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Application Information

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IPC IPC(8): G02B6/27G02B6/25
Inventor 董新永钱文文赵春柳邵理阳康娟倪凯
Owner CHINA JILIANG UNIV
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