Circuit modular of APD signle photon detection

A single-photon detection and circuit module technology, applied in electrical components, radiation intensity measurement, electromagnetic wave transmission systems, etc., can solve the problems of inaccurate detection time accuracy, affecting signal acquisition, and inability to identify, to offset vibration and overcharge. , high detection time accuracy, noise reduction effect

Inactive Publication Date: 2008-08-13
EAST CHINA NORMAL UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology works well for detecting light waves with frequencies between 780 nm (nm) and 850 nm (200-50 GHz). It uses an asymmetrically balanced circuit design that eliminates any impact or excessive voltage from certain parts of the device while still working properly at other points on its surface. By doing this, these devices have better performance even when used under extreme conditions such as being exposed to strong sunlight without getting damaged due to heat buildup. Overall, this new technology allows us to make precise measurements quickly and accurately across different wavelength regions.

Problems solved by technology

This patented describes various technical problem addressed in the patents relating to improving security during quantum key distribution or quantum secret sharing attacks. Current techniques such as Passive Suppressor (PND)-based devices suffer from slow down rates due to their use of crystal phospho diodes, while Active Detection (AD)/gate-Mode Optically Detectable Interferometric Devices (OIDMs) offer faster operation compared to PINA/GOI detectors. However, current solutions require wider input windows and may result in reduced sensitivity if they don't match well within specific ranges.

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
  • Circuit modular of APD signle photon detection
  • Circuit modular of APD signle photon detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] attached figure 1 It is a schematic diagram of a circuit for single photon detection using an indium gallium arsenic avalanche photodiode InGaAs-APD in Embodiment 1 of the present invention;

Embodiment 2

[0010] attached figure 2 It is the schematic circuit diagram of Embodiment 2 of the present invention;

[0011] Specific technical solutions

[0012] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:

[0013] Embodiment 1: as figure 1 As shown, this embodiment is composed of a signal detection circuit, a signal amplification circuit, a balance suppression circuit, and a logic signal generation circuit, wherein the detection circuit is connected to the signal amplification circuit, and the combination circuit formed by the detection circuit and the signal amplification circuit is connected to the balance suppression circuit. A logic signal generation circuit is connected between them.

[0014] The above-mentioned signal detection circuit is composed of capacitor C2, resistors R7, R8, and a

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 is related to quanta secret communication, especially related to capacity balanced and narrow gating pulse restrained module of ADP single photo detection circuit. The module of circuit is composed of signal detection circuit; signal amplifying circuit, balance and suppression circuit and generating circuit for logic signals. Except variable capacity, the balance and suppression circuit is identical to signal detection circuit and signal amplifying circuit in circuit connection and parameters of each component. Advantages are: realizing detection of single photo in near-infrared band, symmetric circuit in balanced mode neutralizes surge and over shock, high efficiency and low noise.

Description

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

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
Owner EAST CHINA NORMAL UNIV
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