Optical module conversion device based on modulator multichannel demultiplexing

A modulator and multi-channel technology, applied in the field of optical information processing, can solve the problems of limiting sampling rate, application limitation, increasing system complexity, etc., and meet the requirements of increasing sampling rate, easy reconstruction, and reducing bandwidth and sampling rate Effect

Active Publication Date: 2017-07-28
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

The sampling rate of PADC based on time division multiplexing is limited by the optical switch speed and the accuracy of optical time synchronization required in the demultiplexing process, so its application is limited
The demultiplexing process based on wavelength division multiplexing technology is very simple, but the number of available channels is limited by the bandwidth

Method used

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  • Optical module conversion device based on modulator multichannel demultiplexing
  • Optical module conversion device based on modulator multichannel demultiplexing
  • Optical module conversion device based on modulator multichannel demultiplexing

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[0028] The technical solutions of the present invention will be described in detail below with reference to the drawings and examples, and detailed implementation manners and processes are given, but the protection scope of the present invention is not limited to the following examples.

[0029] See figure 1 , figure 1 This is the overall architecture diagram of the embodiment of the optical analog-to-digital conversion device based on modulator multi-channel demultiplexing of the present invention. It can be seen from the figure that the optical analog-to-digital conversion device based on modulator multi-channel demultiplexing of the present invention is characterized by including high Rate pulse laser 1, photon sampling gate 3, multi-channel demultiplexing module 5, parallelized photoelectric conversion module 6, parallelized electrical sampling module 7, data processing unit 8, and radio frequency synthesis module 9, the high-rate pulsed laser 1 is used to generate a high-rate...

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Abstract

An optical module conversion device based on modulator multichannel demultiplexing comprises a high-rate pulsed laser, a photon sampling gate, a multichannel demultiplexing module, a radio frequency frequency-synthesizing module, a parallelized photoelectric conversion module, a parallelized electrical sampling module and a data processing unit. The multi-channel demultiplexing is realized by using the optical switch effect of the modulator, and the high-speed optical sampling pulse is demultiplexed by the cascading modulator step by step. Finally, the parallelized photoelectric conversion, electrical sampling and data processing are utilized in a compound mode to realize the acquisition of the sampled signal. The device plays a critical role in improving the performance of microwave photon systems which require high sampling rate, high time precision and high sampling precision, wherein the microwave photonic systems comprise microwave photon radars, optical communication systems and the like.

Description

technical field [0001] The invention relates to optical information processing technology, in particular to an optical analog-to-digital conversion device based on modulator multi-channel demultiplexing. Background technique [0002] Signals in nature exist in continuous form, that is, analog signals. In order to facilitate signal transmission, processing and storage, analog signals need to be converted into digital signals. Therefore, the analog-to-digital converter is a bridge connecting the analog world and the digital world. In recent years, electrical analog-to-digital conversion (EADC) technology has developed rapidly. The highest sampling rate of commercial chips in the world is about 30Gs / s, 5.5bit, and the analog bandwidth that the corresponding equipment can handle can reach 30GHz. However, these indicators are close to the theoretical limit of electricity, and further improvement faces great challenges. This is because the design, manufacture and packaging of EADC...

Claims

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Application Information

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IPC IPC(8): G02F7/00H04J14/02
CPCG02F7/00H04J14/0202
Inventor 邹卫文于磊杨光陈建平
Owner SHANGHAI JIAO TONG UNIV
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