Unlock instant, AI-driven research and patent intelligence for your innovation.

An optical autocorrelator with an unbalanced mach-zehnder type optical path scanner embedded in a sagnac ring optical path

A technology of optical path scanning and autocorrelator, which is applied in the direction of testing optical performance, etc., which can solve the problems of difficult test results and matching requirements to be tested.

Active Publication Date: 2017-11-21
GUILIN UNIV OF ELECTRONIC TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that the test optical path structure is quite different from the working state of the Sagnac interferometer, and the test results are difficult to accurately match the requirements to be tested.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An optical autocorrelator with an unbalanced mach-zehnder type optical path scanner embedded in a sagnac ring optical path
  • An optical autocorrelator with an unbalanced mach-zehnder type optical path scanner embedded in a sagnac ring optical path
  • An optical autocorrelator with an unbalanced mach-zehnder type optical path scanner embedded in a sagnac ring optical path

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment one: in order to test the characteristics of the single-mode polarization-maintaining fiber, we connect the single-mode fiber in series to the position of the device under test 4-2 in the Sagnac ring optical path, as image 3 As shown, connecting the optical fiber under test to the two test ports of the unit under test 4 can realize the measurement of the optical fiber's transmission spectral filtering characteristics and spectral response characteristics for known light sources.

Embodiment 2

[0066] Embodiment two: in order to obtain the impact of the fiber optic coupler on the light source in the fiber optic gyroscope system, it is connected in series to the position of the device under test 4-3 in the Sagnac ring light path, such as Figure 4 As shown in , by connecting any two ports of the 2×2 fiber optic coupler to be tested with the two test ports of the unit under test 4, the fiber coupler can realize the transmission spectral filtering characteristics and spectral response characteristics of the known light source Measurement.

Embodiment 3

[0067] Embodiment three: in order to obtain the impact of the optical fiber ring made by winding on the light source in the fiber optic gyroscope system, it is connected in series to the position of the device under test 4-2 in the Sagnac ring light path, such as Figure 5 As shown, the fiber optic gyro ring is connected to the two test ports of the unit under test 4 to realize the measurement of the optical fiber gyro ring for transmission spectral filtering characteristics and spectral response characteristics of known light sources.

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

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of optical fiber technology, and specifically relates to a light source that can be used in the development and production of fiber optic gyroscopes for testing and analysis, and can also be used for optical fiber couplers, optical fibers and Sagnac ring light paths of fiber optic rings in fiber optic gyroscope systems. Optical autocorrelator with built-in unbalanced Mach-Zehnder type optical path scanner. The invention includes a light source, a three-port optical fiber circulator, a 3dB optical fiber coupler, a device to be tested, an unbalanced optical path difference scanner, a beam splitter, a spectrum analyzer, a photoelectric conversion differential amplifier, a scanning control unit, a signal processing unit, an automatic The data bus and PC computer of the correlator, the correlator is to place each main key optical device in an equivalent ring interferometer system to realize the measurement. Since the measurement environment of the device under test is similar to its working environment, the obtained measurement results help to characterize its actual working conditions and characteristics in the working state of the gyroscope.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, and specifically relates to a light source that can be used for testing and analyzing the optical fiber gyroscope in the development and production process, and can also be used for the light source transmission spectrum of the optical fiber coupler, optical fiber and optical fiber ring in the optical fiber gyroscope system An optical autocorrelator with an unbalanced Mach-Zehnder type optical path scanner embedded in the Sagnac annular optical path for testing the influence of the coherent properties of light. Background technique [0002] Optical fiber white light interference technology and method is a unique measurement method and sensing technology in the field of optical fiber technology. This specialized technology is used in the study of wide-spectrum optical interference characteristics, absolute deformation optical fiber sensing measurement, the structure of optical waveguide dev...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH