Superconducting nanowire single photon detector fabricated on micro-nano fiber surface

A single-photon detector and superconducting nanowire technology, applied in the field of light detection, can solve problems such as low detection efficiency, and achieve the effects of improving optical coupling efficiency, reducing dynamic inductance, and improving speed.

Active Publication Date: 2016-11-16
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI +1
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the present invention provides a superconducting nanowire single photon detector prepared on the

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
  • Superconducting nanowire single photon detector fabricated on micro-nano fiber surface
  • Superconducting nanowire single photon detector fabricated on micro-nano fiber surface
  • Superconducting nanowire single photon detector fabricated on micro-nano fiber surface

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example one

[0029] See figure 1 and figure 2 , The present invention provides a superconducting nanowire single-photon detector prepared on the surface of a micro-nano fiber. The superconducting nanowire single-photon detector prepared on the surface of the micro-nano fiber includes: a micro-nano fiber 1 and a superconducting nanowire 2; Wherein, the superconducting nanowire 2 is located on the surface of the micro-nano fiber 1, and the length direction of the superconducting nanowire 2 is consistent with the length direction of the micro-nano fiber 1.

[0030] As an example, the micro-nano fiber 1 is drawn from a standard single-mode fiber, and the material of the micro-nano fiber 1 is SiO 2 .

[0031] As an example, the shape of the micro-nano fiber 1 is cylindrical and conical, and the diameter of the end face of the micro-nano fiber 1 is 1 micron, that is, the diameter of the cross-section of the micro-nano fiber 1 is 1 micron; The light transmittance of the optical f...

Example Embodiment

[0040] Example two

[0041] See image 3 and Figure 4 The present invention also provides a superconducting nanowire single-photon detector prepared on the surface of a micro-nano fiber, the superconducting nanowire single-photon detector prepared on the surface of the micro-nano fiber and the surface of the micro-nano fiber described in the first embodiment The structure of the prepared superconducting nanowire single-photon detector is basically the same. The difference between the two is: the diameter of the micro-nano fiber 1 in the first embodiment is 1 micron, and the number of the superconducting nanowires 2 is 3 , The preparation method of the superconducting nanowire 2 is a process of etching after the NbN superconducting film is formed by using a magnetron sputtering process; and in this embodiment, the diameter of the micro / nano fiber 1 is 0.1 micron, so The number of the superconducting nanowires is one, and the preparation method of the superconducting nanowires 2 i...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a superconducting nanowire single photon detector fabricated on a micro-nano fiber surface. The superconducting nanowire single photon detector comprises a micro-nano fiber and a superconducting nanowire, wherein the superconducting nanowire is arranged on the micro-nano fiber surface, and the length direction of the superconducting nanowire is consistent with the length direction of the micro-nano fiber. In the superconducting nanowire single photon detector, the superconducting nanowire is formed on the micro-nano fiber surface, direct and high-efficiency optical coupling of the micro-nano fiber and the superconducting nanowire can be achieved by means of optical transmission and coupling characteristics of the micro-nano fiber on a micro-nano scale, and the optical coupling efficiency of the superconducting nanowire single photon detector is improved; compared with a traditional device, the effective area of the superconducting nanowire is not limited by the size of an end surface of the fiber, the length of the superconducting nanowire can be reduced, thus, the dynamic inductance of the superconducting nanowire single photon detector is effectively reduced, and the rate of the superconducting nanowire single photon detector is further improved; and the superconducting nanowire is directly formed on the surface of the micro-nano fiber, and the long-term working stability of the superconducting nanowire single photon detector is improved.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and designs a superconducting nanowire single-photon detector, in particular to a superconducting nanowire single-photon detector prepared on the surface of a micro-nano optical fiber. Background technique [0002] Superconducting Nanowire Single Photon Detector (SNSPD) is an important photodetector, which can realize single photon detection from visible light to infrared band. SNSPD mainly uses low-temperature superconducting ultra-thin film materials, such as NbN, Nb, NbTiN, WSi, etc., and superconducting nanowires are directly formed on the surface of silicon or other material substrates (such as MgO, sapphire). The typical thickness is about 5nm-10nm, and the device usually adopts a meandering nanowire structure with a width of about 100nm. [0003] When SNSPD works, it is placed in a low temperature environment (<4K), the device is in a superconducting state, and a certain bias...

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): H01L31/0256H01L31/0352H01L31/08B82Y15/00B82Y30/00
CPCB82Y15/00B82Y30/00H01L31/0256H01L31/0352H01L31/08
Inventor 尤立星巫君杰李浩王镇方伟童利民
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH 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