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Photon crystal optical fiber premade rod made by calculating holographic method and its making method

A photonic crystal fiber and computational holography technology, applied in manufacturing tools, glass manufacturing equipment, glass fiber products, etc., can solve the problems of periodic structure distribution and parameter difficulties, and achieve the effect of simple production and simple optical path.

Inactive Publication Date: 2010-09-29
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Application Information

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Problems solved by technology

Both of the above two methods have certain limitations, especially it is difficult to arbitrarily change the distribution and parameters of the periodic structure

Method used

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  • Photon crystal optical fiber premade rod made by calculating holographic method and its making method
  • Photon crystal optical fiber premade rod made by calculating holographic method and its making method

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Embodiment Construction

[0015] The key to preparing a photonic crystal fiber is to prepare a two-dimensional periodic photonic crystal fiber preform, and the key to preparing a photonic crystal fiber preform is to prepare a two-dimensional periodic photonic crystal. It is proposed to use computational holography to fabricate two-dimensional photonic crystals, and further prepare photonic crystal fiber prefabricated rods. First, fabricate a computational holographic sample of a two-dimensional photonic crystal, the principle of which is as follows figure 2 ; Then in the optical reproduction system, the two-dimensional photonic crystal pattern to be produced is transferred to the photoresist coated on the silicon substrate by using the computational holographic sample. The method has a simple optical path, and can manufacture two-dimensional photonic crystals with arbitrary structures and arbitrary defects in infrared and visible light bands.

[0016] The two-dimensional photonic crystal hologram mad...

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Abstract

This invention relates to the photon crystal optical fiber prefabricates staff produced by calculation holography, and its method. It can achieve arbitrary structure of two-dimensional photon crystal. the cross section of it is the periodic structure that has the central symmetric media column (1), the same size medium column (1) along fiber axial rank in basic rod (2) as center symmetry, in the center of the periodic structure medium column (1), deletion of one or more media column (1), constitute Center defects (3). Production methods: 1.) use calculation holography to draw the calculation hologram of the periodic geometric structure photon crystal that has law of central symmetry; 2.) coat photoetching sticky on the silica rod; 3.) transfer the two-dimensional photon crystal pattern tot photoetching sticky, 4.) etching the after exposed silica-based rods to obtain photon crystal fiber prefabricates staff.

Description

technical field [0001] The invention relates to a photonic crystal fiber, in particular to a method for preparing a photonic crystal fiber prefabricated rod. Background technique [0002] Photonic crystal fiber is a research hotspot in the field of optical communication and photonic devices in recent years. The concept of photonic crystal fiber PCF (photonic crystal fiber) was first proposed by ST.J.Russell et al. in 1992. Its general structure is that air holes or dielectric columns are uniformly arranged along the axial direction, and these air holes or dielectric columns are arranged in a two-dimensional periodic structure from the cross-section of the optical fiber. Line defects are introduced, and the defects constitute the core of the fiber, and the two-dimensional periodic structure outside the defects constitutes the cladding. According to the light transmission mechanism, photonic crystal fibers are mainly divided into the following two categories: total internal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/012
CPCC03B37/0122C03B2203/42
Inventor 陈鹤鸣施伟华钱晨邹建华汪静丽陈陶赵新彦
Owner NANJING UNIV OF POSTS & TELECOMM