High Speed ​​Laser-Microwave Link Serial-to-Parallel Conversion Method

A technology of microwave link and conversion method, applied in parallel/serial conversion, code conversion, electrical components, etc., can solve the problems of difficult conversion of laser signals, mismatch of rates between laser links and microwave links, etc. The effect of rate mismatch, zero packet loss, and high isolation

Active Publication Date: 2021-06-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problem that the rate of the existing laser link and the microwave link does not match, and it is difficult to realize the conversion of the laser signal with a higher rate in the electrical domain, the present invention provides a high-speed laser-microwave link serial-to-parallel conversion method

Method used

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  • High Speed ​​Laser-Microwave Link Serial-to-Parallel Conversion Method
  • High Speed ​​Laser-Microwave Link Serial-to-Parallel Conversion Method

Examples

Experimental program
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Effect test

Embodiment 1

[0093] see figure 1 , taking 10Gbps laser data speed reduction as an example:

[0094] (1) The 10Gbps high-speed NRZ optical signal is converted into an electrical signal by the first photodetector 1 (PD);

[0095] (2) The converted electrical signal enters the clock data recovery unit 2 (CDR), and the 10Gbps data and 5GHz clock signal are recovered by the clock data recovery unit 2 (CDR);

[0096] (3) The laser 3 emits continuous light to the Mach-Zehnder modulator 4, and the 10Gbps data is re-modulated to the optical carrier by the Mach-Zehnder modulator 4 (MZM), converted into a 10Gbps optical signal and enters the first all-optical serial parallel conversion unit;

[0097] (4) In the first all-optical serial-to-parallel conversion unit, the first dual-output Mach-Zehnder modulator 6 realizes the selection and separation of odd and even channels, and by controlling the first optical delay device (ODL), the 5GHz clock and the 10Gbps optical signal pair Accurate, obtain 2 ...

Embodiment 2

[0104] The difference from Embodiment 1 is that, see figure 2 , step 1.3): 10Gbps data is remodulated onto the optical carrier through the Mach-Zehnder modulator 4 (MZM), converted into a 10Gbps optical signal and first enters the amplifier 14 for amplification, and then enters the first all-optical serial-to-parallel conversion unit; amplifier 14 It can be an erbium-doped fiber amplifier.

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Abstract

The invention provides a high-speed laser-microwave link serial-to-parallel conversion method, which solves the problem of the speed mismatch between the existing laser link and the microwave link. The method comprises the following steps: 1) slowing down the speed of the high-speed optical signal, 1.1) converting the M Gbps high-speed NRZ optical signal into an electrical signal; 1.2) entering the electrical signal into the clock data recovery unit to recover the M Gbps data and the M / 2 GHz clock signal; 1.3 ) M Gbps data is re-modulated to the optical carrier by the Mach-Zehnder modulator and converted into a M Gbps optical signal; 1.4) The first dual-output Mach-Zehnder modulator selects and separates the odd-even channel of the M Gbps optical signal, and outputs 2 channels M / 2 Gbps RZ optical signal with high isolation and low crosstalk; Step 2: Determine whether the data rate of the output optical signal after deceleration is less than or equal to the maximum value A of the decelerated output signal; if not, continue to decelerate until the condition is met ;2 after deceleration N Road M / 2 N Gbps RZ signal enters D flip-flop, output 2 N Road M / 2 N Gbps NRZ signal.

Description

technical field [0001] The invention belongs to space laser communication technology, in particular to a high-speed laser-microwave link serial-to-parallel conversion method. Background technique [0002] With the rapid development of information technology and space technology, the amount of information acquired by various aircraft in space and near space and needs to be transmitted and processed is showing explosive growth. It is estimated that by 2020, the data rate of synthetic aperture radar will reach 60Gbps, and the data rate of hyperspectral imager will reach 100Gbps. high demands. Compared with microwave communication, satellite laser communication has the advantages of frequency bandwidth, small antenna size, small size, light weight, low power consumption, good confidentiality, strong anti-interference ability, and no frequency supervision restrictions, etc. The integrated information transmission system requires high-speed, large-capacity, multi-service informa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M9/00
CPCH03M9/00
Inventor 高铎瑞谢小平汪伟谢壮胡辉苏玉龙
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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