Fluorescent switch response speed adjustable system and modulation method

A technology of response speed and fluorescent switch, which is applied in the field of fluorescent switch, can solve the problems of high energy consumption, difficult drawing of optical fiber, and influence on the development of all-optical optical fiber communication, and achieve the effect of improved emission efficiency and simple response speed

Active Publication Date: 2019-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, such materials have low output, high energy consumption, and are not easy to be drawn into optical fibers, which will affect the future development of all-optical optical fiber communication.

Method used

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  • Fluorescent switch response speed adjustable system and modulation method
  • Fluorescent switch response speed adjustable system and modulation method
  • Fluorescent switch response speed adjustable system and modulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, the fluorescent switch response speed adjustable system in this implementation includes a single-doped rare earth transparent material 1, a first laser 2, a second laser 3, a plurality of lens optical elements, a first detector 13, a second detector 14, A photomultiplier tube 10, a laser signal modulator; the plurality of lens optical elements include a first reflector 4, a second reflector 5, a first dichromatic mirror 7, a first lens 8, a second lens 11, a second two Chromatic mirror 12, third reflector 6, third lens 9; the laser light emitted by the first laser is focused on the single-doped rare earth transparent On the material, it is received by the first detector after passing through the second lens and the second dichroic mirror; the laser light emitted by the second laser is focused on the single-doped On the rare earth transparent material, it is received by the second detector after passing through the second lens and the second d...

Embodiment 2

[0048] In this example, doped with Tm 3+ The transparent glass-ceramic is used as the medium for the dual-frequency laser to simultaneously excite the fluorescent modulated light with adjustable response speed. The principle of the dual-frequency excitation up-conversion energy level is as follows: figure 2 As shown in b, the 800nm ​​laser is used as the ground-state absorption laser, and the 1064nm laser is used as the excited-state absorption laser. Dual-frequency simultaneous excitation will produce efficient blue light emission, such as Figure 5 shown.

[0049] The modulation process of the fluorescence response speed in this embodiment is as follows:

[0050] When the 800nm ​​laser is fixed as continuous light and the 1064nm laser is modulated as pulsed light by a laser signal modulator, a fast fluorescent switch modulation with a response speed of 388μs can be obtained, as shown in Figure 6(a) and Figure 6(c). When the 1064nm laser is fixed as continuous light, and t...

Embodiment 3

[0052] In this example, Ho 3+ The transparent glass-ceramic is used as the medium for the dual-frequency laser to simultaneously excite the fluorescent modulated light with adjustable response speed. The principle of the dual-frequency excitation up-conversion energy level is as follows: figure 2 Shown in c. The 1870nm laser is used as the ground state absorption laser, and the 980nm laser is used as the excited state absorption laser. Dual-frequency simultaneous excitation will produce efficient red light emission, such as Figure 7 shown.

[0053] The modulation process of the fluorescence response speed in this embodiment is as follows:

[0054] When the 1870nm laser is fixed as continuous light, and the 980nm laser is modulated as pulsed light by a laser signal modulator, a fast fluorescent switch modulation with a response speed of 66 μs can be obtained, such as Figure 8(a) and 8(c) shown. When the 980nm laser is fixed as continuous light, and the 1870nm laser is m...

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Abstract

The invention discloses a fluorescent switch response speed adjustable system which comprises a single rare-earth-doped transparent material, a first laser, a second laser, multiple lens optical elements, a first detector, a second detector, a photo-multiplier tube and a laser signal modulator. A laser wavelength of the first laser corresponds to a ground state absorption wavelength of the single rare-earth-doped transparent material exited by dual-frequency laser light; a laser wavelength of the second laser corresponds to an excited state absorption wavelength of the single rare-earth-doped transparent material exited by dual-frequency laser light; a rare-earth-doped laser material produces fluorescence under excitation of continuous laser light and pulse laser light, and the fluorescence passes through a third lens and is received by the photo-multiplier tube; for the two lasers, when one laser achieves continuous laser output, the other laser achieves pulse laser output; continuous or pulse signal switching is conducted between the two lasers by modulating laser output forms of the lasers by means of the laser signal modulator, and the fluorescent switch response speed is adjustable.

Description

technical field [0001] The invention relates to a fluorescent switch, in particular to a fluorescent switch response speed adjustable system and modulation method. Background technique [0002] With the acceleration of modern informationization, traditional electronic information processing can no longer meet people's increasing production and living needs. In information processing, photons have more advantages than electrons, such as: fast optical response, low crosstalk, almost unaffected by environmental decoherence, high integration depth, and easy quantization. Therefore, photons will become a central topic in the development of optical information processing in the future. The ultimate goal of the development of optical information processing technology is to realize the all-optical network, which also prompts people to explore the quantum properties of light, realize the interaction between photons by controlling light, and then realize the switching of optical path...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
CPCG02F1/3515
Inventor 邱建荣陈智张航陈秋群康世亮
Owner SOUTH CHINA UNIV OF TECH
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