Wavelength-coding-technology-based frequency response testing device for photoelectric detector, and testing method thereof

A technology of photodetector and encoding technology, which is applied in the direction of testing optical performance, etc., can solve problems such as low efficiency, low signal-to-noise ratio, small dynamic range of testing, etc., and achieve improved testing range, low cost, and good coherence stability Effect

Inactive Publication Date: 2016-05-25
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, intensity noise technology, which is simple and quick, and has a wide measurement range. The main problem is that the test dynamic rang

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
  • Wavelength-coding-technology-based frequency response testing device for photoelectric detector, and testing method thereof
  • Wavelength-coding-technology-based frequency response testing device for photoelectric detector, and testing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0029] Please refer to figure 1 , the present invention provides a test device for the frequency response of a photodetector based on wavelength encoding technology, comprising:

[0030] An optical wavelength code generator 10, used to generate a coded optical pulse signal comprising a reference optical pulse signal and a delayed optical pulse signal, said optical wavelength code generator 10 is composed o...

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 provides a wavelength-coding-technology-based frequency response testing device for a photoelectric detector. The wavelength-coding-technology-based frequency response testing device comprises an optical wavelength coding generator, an optical isolator, an optical fiber coupler, an optical delay line, an optical polarization controller, a photoelectric detector to be detected, and a beat frequency signal detector, wherein an input end of the optical isolator is connected with an output end of the optical wavelength coding generator; a port (1) of the optical fiber coupler is connected with an output end of the optical isolator; one end of the optical delay line is connected with a port (2) of the optical fiber coupler; one end of the optical polarization controller is connected with the other end of the optical delay line; the other end of the optical polarization controller is connected with a port (4) of the optical fiber coupler; an input end of the photoelectric detector to be detected is connected with a port (3) of the optical fiber coupler; and an input end of the beat frequency signal detector is connected with an output end of the photoelectric detector to be detected. The wavelength-coding-technology-based frequency response testing device for a photoelectric detector can quickly and visually acquire the frequency response for the photoelectric detector.

Description

technical field [0001] The invention relates to the technical field of photoelectric instrument measurement, in particular to a test method for measuring the frequency response of a photoelectric detector by a test device based on wavelength coding technology. Background technique [0002] With the rapid popularization of Internet technology, people's demand for information has exploded. In the high-speed, large-capacity information network system, optical fiber communication technology has become one of the main pillars of modern communication due to its unique and incomparable advantages in bandwidth and transmission distance, and plays an important role in modern telecommunication networks. pivotal role. Photodetectors are key devices in optical fiber communication systems, and it is very important to improve the test level of frequency response characteristics of photodetectors for the design and application of optical fiber communication systems. At present, there are...

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
IPC IPC(8): G01M11/02
CPCG01M11/02
Inventor 祝宁华王玮钰孙文惠刘建国陈伟
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap