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Optical sampling system based on quantum dot mode-locked laser devices

A technology of mode-locked lasers and quantum dots, which is applied in the field of microwave photonics, can solve the problems of high quantization accuracy and achieve the effect of monolithic integration and simple structure

Active Publication Date: 2014-11-19
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

With the rapid increase of information capacity, analog-to-digital conversion solely relying on electronic technology cannot achieve high quantization accuracy at a high sampling rate

Method used

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  • Optical sampling system based on quantum dot mode-locked laser devices
  • Optical sampling system based on quantum dot mode-locked laser devices

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0032] figure 1 is a structural schematic diagram of the optical sampling system of the present invention, such as figure 1 As shown, the system includes: a plurality of quantum dot mode-locked lasers, a wavelength division multiplexer 5, a polarization controller 6, an optical amplifier 7, a first circulator 8, a dispersion-shifted optical fiber 9, a second circulator 10, any Waveform generator 11, sampler 12, wave division multiplexer 13, multiple photodetectors and multiple electrical signal processing modules, wherein:

[0033] Each of the plurality of quantum dot mode-locked lasers is used to generate a set of multi-wavelength optical sampling signals;

[0034] In an embodiment of the present invention, the number ...

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Abstract

The invention discloses an optical sampling system based on quantum dot mode-locked laser devices. The system comprises the multiple quantum dot mode-locked layer devices, a wavelength division multiplexer, a polarization controller, an optical amplifier, a first circulator, a dispersion displacement optical fiber, a second circulator, a random waveform generator, a sampling device, a wave resolving multiplexer, a plurality of photoelectric detectors and a plurality of electric signal processing modules. Optical sampling is achieved based on the quantum dot mode-locked laser devices, the wavelength-division multiplexing technology and a Brillouin balancer, the system structure is simple, the wideband and all-optical sampling can be achieved, and the sampling precision is higher under the situation that the sampling rate is high.

Description

technical field [0001] The invention belongs to the field of microwave photonics, and more specifically relates to a high-speed, broadband all-optical sampling system based on the multi-wavelength spectrum characteristics of quantum dot mode-locked lasers combined with wavelength division multiplexing and a Brillouin equalizer. Background technique [0002] High-sampling rate and high-precision analog-to-digital converters are key components in analog communications, modern radars, large-capacity optical transmission systems, and high-speed, high-precision test systems, and are key nodes in optoelectronic systems and even all-optical systems. With the rapid increase of information capacity, analog-to-digital conversion solely relying on electronic technology cannot achieve high quantization accuracy at a high sampling rate. Subsequently, a method of using photon technology to achieve high sampling rate was proposed, which can achieve high sampling accuracy while using photon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293
Inventor 王文亭刘建国孙文惠李伟陈伟祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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