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A spiral fiber waveplate based on spatial helical bending

An optical fiber and helical technology, which is applied in the related fields of optical wave plates, can solve the problem that the outgoing polarization state deviates from its preset value, etc., and achieves the effect of excellent circular polarization retention ability.

Active Publication Date: 2022-05-20
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a rotatable fiber waveplate based on spatial helical bending, which solves the problem of random linear birefringence in the prior art and the serious deviation of the output polarization state from its preset value. question

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  • A spiral fiber waveplate based on spatial helical bending
  • A spiral fiber waveplate based on spatial helical bending
  • A spiral fiber waveplate based on spatial helical bending

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Embodiment Construction

[0022] 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 understood that the specific embodiments described here are only used to explain the present invention, not to limit 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.

[0023] like figure 1 As shown, the fiber optic wave plate is composed of three parts, that is, the length is L i The incident end-spun fiber pigtail, the length is L R The rotating fiber retarder (Retarder), the length is L o The output end of the fiber optic pigtail is spun. The fiber pigtails at both ends are used to connect with other optical devices in the fiber optic system, and the fib...

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Abstract

The invention belongs to the related technical field of optical wave plates, and discloses a rotating optical fiber wave plate based on spatial helical bending. The wave plate is formed by a spiral optical fiber spirally spiraling in space, and the spiral optical fiber includes three parts, the incident end, the middle section and the output end, wherein the middle section is used to form the phase delay required by the wave plate . Compared with the existing optical fiber wave plate, the spun fiber wave plate based on spatial helical bending proposed by the present invention suppresses or even submerges the linear birefringence generated by the outside due to the high birefringence axis of the helical structure inside the spun fiber. Thus a definite output polarization state is obtained.

Description

technical field [0001] The invention belongs to the related technical field of optical wave plates, and more particularly relates to a rotating optical fiber wave plate based on spatial helical bending. Background technique [0002] Waveplate is a commonly used optical device, which is widely used in optical systems to realize polarization state conversion of polarized light. Generally, waveplates are made by cutting optical crystals into parallel sheets of specific thickness. However, these bulk optical waveplates are inherently narrow-band, bulky, and difficult to integrate with fiber optic systems, which greatly restricts their application in fiber optics. applications in the system. Compared with bulk optical waveplates, the introduction of all-fiber waveplates can not only reduce internal loss and back reflection, but also maintain a high degree of integration, thereby improving the overall performance of fiber optic systems. Therefore, the all-fiber waveplate is an i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/024G02B6/27
CPCG02B6/024G02B6/274G02B6/2766
Inventor 赵斌於得奋吴鹏飞魏成祥
Owner HUAZHONG UNIV OF SCI & TECH