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.
CN110471178APending Publication Date: 2019-11-19WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
Publication Date
2019-11-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More