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All-fiber circuit polarizer

A circular polarizer and all-fiber technology, applied in the field of optical fiber polarization devices, to achieve the effect of avoiding precise alignment and compact structure

Inactive Publication Date: 2010-01-13
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing implementation methods of fiber optic circular polarizers is that although full-fiber fiber optic circular polarizers can be realized, a linear polarizer is still required, and there is still the problem of accurate axis alignment

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  • All-fiber circuit polarizer
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Embodiment Construction

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0016] Such as figure 1 Shown is a schematic structural diagram of an all-fiber circular polarizer according to an embodiment of the present invention. The all-fiber circular polarizer includes a first optical fiber 100 and two second optical fibers 110 and 120 . Wherein, the first optical fiber 110 is a high-line birefringent optical fiber that has been uniformly twisted in a molten state, and the twist period is on the order of submillimeters. There is refractive index anisotropy in the core region of the first optical fiber 110, and...

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Abstract

The invention provides an all-fiber circuit polarizer comprising a first optical fiber and two second optical fibers, wherein the first optical fiber is used for twisting in a certain twisting rate in a melting state to realize circuit polarization; the second optical fibers are used for connecting and transmitting. The all-fiber circuit polarizer comprises the first optical fiber and the two optical fibers, and the circuit polarization can be realized on various wavelengths by regulating the twisting rate and the optical fiber length of the first optical fiber. The all-fiber circuit polarizer has compact structure, has a size in centimeter magnitude and avoids the problem of accurate countershaft of a linear polarizer.

Description

technical field [0001] The invention relates to the field of optical fiber sensing technology and communication technology, in particular to an optical fiber polarization device. Background technique [0002] The polarization properties of light are used in coherent optical communications and in many fiber optic sensing systems. This technology of generating, transmitting, maintaining, measuring and applying light polarization in optical fiber is collectively referred to as polarization technology. Fiber polarizer is a key device in polarization technology. Fiber optic polarizers are optical components used to obtain light with a specific polarization state from input light of any polarization state, and have been widely used in fiber optic measurement, fiber optic sensing, and various polarization control systems. [0003] Existing circular polarizers usually consist of a linear polarizer and a quarter-wave plate. After polarizing with a linear polarizer, it is converted ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/27G02B6/024G02B6/255
Inventor 苏觉李成洪蕾杨利钱景仁
Owner UNIV OF SCI & TECH OF CHINA