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Method for measuring transmission speed of electrical signal in metal wire and implementing device

A metal wire and transmission speed technology, applied in the field of femtosecond laser speed measurement, can solve the problems of large error and slow data collection time, achieve fast data collection speed, improve work efficiency, and reduce errors

Inactive Publication Date: 2015-03-25
BEIJING UNIV OF TECH
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Problems solved by technology

But this method can only be used for small-scale delay systems, and the data acquisition time is slow
[0003] However, due to the instability of the electrical signal itself, the general method of measuring the electrical signal, such as the jitter of the electrical signal at the ps level, and the limitation of the measuring instrument, has a serious defect of large error

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  • Method for measuring transmission speed of electrical signal in metal wire and implementing device
  • Method for measuring transmission speed of electrical signal in metal wire and implementing device

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Embodiment Construction

[0033] figure 1 It is a schematic diagram of the implementation device of the method for measuring the transmission speed of electric signals in metal wires of the present invention. A diagram of the device for measuring the transmission speed of electric signals in metal wires according to the present invention. Such as figure 1 As shown, the device includes: a femtosecond laser amplifier 1, a reflective surface 2, a first spherical lens 3, a filter 4, a second spherical lens 5, an optical fiber 6, a transient spectrometer 7, and a metal wire 8.

[0034] The femtosecond laser amplifier 1 generates an ultrashort femtosecond laser pulse that can be detected by the transient spectrometer 7;

[0035] The reflective surface 2 reflects the femtosecond laser pulse to the first spherical lens 3;

[0036] The first spherical lens 3 is used to collect the femtosecond laser pulse and make it enter the filter plate 4;

[0037] Filter 4 is used to filter out the interference of light ...

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Abstract

The invention provides a method for measuring transmission speed of an electrical signal in a metal wire by using a femtosecond laser time resolution spectrum and an implementing device. The method is used for measuring the transmission speed of the electrical signal in the wire based on time resolution of the transient process and has the powerful advantages of being high in data collecting speed and working efficiency and small in measurement error. Concretely, the time resolution spectrum method is used for making the resolution ratio reach the ps magnitude and be close to self shake, and then the own error of measurement is greatly reduced; time delay of the ps magnitude and the us magnitude can be obtained by adopting an electrical signal and optical pulse signal synchronization method, the data collecting speed is high, and therefore the working efficiency is greatly improved; based on the measurement of the time resolution spectrum, depending on the ultrafast exposure time of a transient spectrograph, the process from opening to closing a shutter can reach 2 ns to the minimum, the ultrafine delay adjusting function is additionally combined, and therefore the measurement accuracy can reach the tens of ps magnitudes.

Description

technical field [0001] The invention belongs to the field of femtosecond laser speed measurement, in particular to a method and device for measuring the transmission speed of electric signals in metal wires by using femtosecond laser time-resolved spectrum. Background technique [0002] In the prior art, a measurement method for studying the transmission speed of an electrical signal in a metal wire is, for example, a pump-probe method. But this method can only be used for small-scale delay systems, and the data acquisition time is relatively slow. [0003] However, due to the instability of the electrical signal itself, such as the jitter of the electrical signal at the ps level, and the limitation of the measuring instrument, the general method of measuring the electrical signal has a serious defect of large error. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides a method and implementation device for meas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 刘世炳李辉宋海英
Owner BEIJING UNIV OF TECH
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