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Photon crystal optical fiber

A technology of photonic crystal fiber and fiber, which is applied in cladding fiber, optical waveguide and light guide, etc., can solve the problem of not very wide transmission bandwidth, and achieve the effects of increased optical wavelength range, convenient fabrication and production, and low loss

Inactive Publication Date: 2009-03-18
NANJING UNIV OF POSTS & TELECOMM
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  • Claims
  • Application Information

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Problems solved by technology

However, the band gap diagram of its photonic crystal fiber is not very ideal, so the transmission bandwidth of this photonic crystal fiber is not very wide

Method used

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Embodiment Construction

[0016] A photonic crystal fiber provided by the invention is composed of a dielectric column 1, a substrate 2 and a central structure. The dielectric columns are distributed periodically in a square, and the fiber axis is from the inner layer to the outer layer, which can be regarded as two dielectric columns with a side length, four dielectric columns with a side length, and six dielectric columns with a side length surrounding the fiber axis. Periodically distributed medium columns, the center of the outermost four medium columns are connected parallel to the X-axis and the Y-axis respectively. Then the central structure can be obtained by taking the central axis of the optical fiber as the center to cover the four innermost dielectric columns, and the cross section of the central structure is approximately circular. The transmission performance of the optical fiber is greatly improved by introducing the central structure. The central structure can take the form of image ...

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Abstract

A photon crystal optical fiber is prepared for distributing media columns along optical fiber center axis as quadrangle form cyclically on substrate in parallel to substrate axis, setting center structure on substrate axis, making center structure be approximately round form covering four media columns at most internal layer of cyclically distributed media columns, applying three types of media columns such as center triangle media column and rectangular media column as well as edge triangle media column by central structure and using silicon or plastic material as substrate.

Description

technical field [0001] The invention relates to an optical fiber communication transmission medium (photonic crystal structure), especially a communication transmission medium with a photonic crystal optical fiber structure, and relates to the technical field of optical communication transmission medium. Background technique [0002] With the rapid increase of people's demand for traffic, the transmission and switching system of the network is facing new challenges, which, to some extent, promotes the development of optical fiber communication technology. Research on optical fiber technology as the carrier of optical signal transmission is constantly deepening. At present, a new type of photonic crystal fiber has become a research hotspot because of its unique transmission performance. [0003] According to different light transmission mechanisms, photonic crystal fibers are mainly divided into the following two categories: total internal reflection photonic crystal fibers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02
Inventor 陈鹤鸣武剑锋王文轩汪静丽
Owner NANJING UNIV OF POSTS & TELECOMM