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Rectangular core structure optical fiber

A core, rectangular technology, applied in the field of rectangular core structure optical fiber, can solve the problems of mode field mismatch and low coupling efficiency, and achieve the effects of low docking loss, easy integration, and increased transmission capacity

Active Publication Date: 2019-03-08
PEKING UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0020] Aiming at the shortcomings existing in the prior art, the present invention proposes a rectangular core structure optical fiber, which can solve the problems of mode field mismatch and low coupling efficiency between the optical fiber and the on-chip rectangular waveguide

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  • Rectangular core structure optical fiber
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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted here that the description of these embodiments is used to help understand the present invention, and only provides one possible specific embodiment, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0038] figure 1 is the mode field distribution diagram of an ordinary circular core fiber, figure 2 It is the mode field distribution diagram of the rectangular core structure optical fiber of the present invention. The ordinary circular core structure optical fiber supports the transmission of LP mode, while the rec...

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Abstract

The invention discloses a rectangular core structure optical fiber. The rectangular core structure optical fiber comprises a rectangular core and a cladding layer in order from inside to outside. Therefractive index of the rectangular core is larger than the refractive index of the cladding layer, and the relative refractive index difference therebetween does not exceed 2.5%. The rectangular corestructure optical fiber solves the problem of the mode mismatch and the low coupling efficiency of the on-chip rectangular waveguide in the existing optical fiber. For the shape characteristics, therectangular core structure optical fiber is a natural polarization-maintaining fiber, can transmit more modes, more effectively improves optical communication capacity, and is easy to integrate and low in cost.

Description

technical field [0001] The invention belongs to the technical field of communication and relates to an optical fiber with a rectangular core structure. Background technique [0002] With the continuous increase of network users and the continuous emergence of new network data services, the demand for network capacity continues to increase. Since common optical multiplexing dimensions (time, wavelength, polarization, and multi-ary modulation) have faced potential development bottlenecks, the current optical communication system based on ordinary single-mode optical fiber has been unable to cope with the vigorous demand for network capacity. As a new optical multiplexing dimension, space division multiplexing has great potential to solve the capacity problem of future optical communication systems, and has received widespread attention worldwide. Space-division multiplexing technology can be divided into mode-division multiplexing technology that utilizes multiple conduction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02B6/024G02B6/028
CPCG02B6/02G02B6/024G02B6/0281
Inventor 李巨浩孟平葛大伟何永琪陈章渊
Owner PEKING UNIV
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