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Polarized light polarization-maintaining transmission device based on rotary half-wave plate

The technology of a transmission device and a half-wave plate is applied in the fields of precision measurement and optical communication, which can solve the problem that the optical fiber slip ring cannot achieve polarization maintenance, etc., and achieve the effects of long-term stable operation, simple mechanical structure and simple mechanical structure part.

Pending Publication Date: 2019-11-19
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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  • Abstract
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Problems solved by technology

[0003] At present, optical fiber slip rings are often used to realize optical transmission between rotating parts and stationary parts, but optical fiber slip rings cannot achieve the function of maintaining polarization during optical transmission.

Method used

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  • Polarized light polarization-maintaining transmission device based on rotary half-wave plate
  • Polarized light polarization-maintaining transmission device based on rotary half-wave plate
  • Polarized light polarization-maintaining transmission device based on rotary half-wave plate

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Embodiment Construction

[0046] In order to make the main features, basic principles and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below; obviously, the described embodiments are part of the embodiments of the present invention, and Not all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] Below in conjunction with accompanying drawing and embodiment this device is described in detail:

[0048] 1. Overall

[0049] Such as figure 1 , figure 2 , the device includes a turntable 00, an auxiliary rotator module 10, a half-wave plate 20, a mirror 30, a turntable origin measurement module 40 and a motor control module 50;

[0050] The auxiliary rotor module 10 includes a motor 11, a first shading...

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Abstract

The invention discloses a polarized light polarization-maintaining transmission device based on a rotary half-wave plate, and relates to the fields of precision measurement and optical communication.The device comprises a turntable, an auxiliary rotator module, a half-wave plate, a reflector, a turntable origin measuring module and a motor control module. The auxiliary rotator module comprises amotor, a first shading strip and a first photoelectric switch. The turntable origin measuring module comprises a second shading strip, a second photoelectric switch and a connecting rod. The motor control module comprises a data acquisition card, a motion controller and a motor driver. The device has the advantages as follows: (1) the mechanical structure is simple, and the expandable space is large; (2) a polarization maintaining function for the transmission of optical signals between a rotating part and a static part is realized; (3) long-term operation is stable, and there is no angle accumulative error caused by rotating speed fluctuation; (4) light propagated in space is transmitted to the turntable from below the turntable, the influence of the environment is small, and the opticalpower loss is low; and (5) the device and the polarized light transmission principle have universal applicability, and can be used in other similar relative rotation devices.

Description

technical field [0001] The invention relates to the fields of precision measurement and optical communication, in particular to a polarization-maintaining transmission device for polarized light based on a rotating half-wave plate; In rotating systems such as laser interference and laser gyroscopes. Background technique [0002] In precision measurement research using highly stable lasers and in the field of optical communications, it is necessary to realize the uninterrupted transmission of optical signals between rotating parts and stationary parts. With the development of precision measurement technology, in the process of optical signal transmission, especially for linearly polarized light, it is inevitable to consider the change of polarization state of light caused by rotation. [0003] At present, optical fiber slip rings are often used to realize optical transmission between rotating parts and stationary parts, but optical fiber slip rings cannot realize the functio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/00
CPCG02B26/00Y02A90/10
Inventor 张涛李刘锋彭建康陈李生毕进
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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