Optical quantizer based on non-linear harmonic property of high-speed modulation light transmitting device

A technology of emitting devices and harmonic characteristics, applied in the field of microwave photonics, can solve problems such as slow development, low bandwidth, and fuzzy judgment of comparators, and achieve the effects of easy integration, high resolution, and fast sampling rate

Active Publication Date: 2014-02-12
山东中科际联光电集成技术研究院有限公司
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Problems solved by technology

With the rapid development of information technology in recent years, although traditional quantizers relying on electronic technology have been developing, due to the limitations of low bandwidth and fuzzy comparator judgment, the development is very slow and it is difficult to meet need

Method used

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  • Optical quantizer based on non-linear harmonic property of high-speed modulation light transmitting device
  • Optical quantizer based on non-linear harmonic property of high-speed modulation light transmitting device
  • Optical quantizer based on non-linear harmonic property of high-speed modulation light transmitting device

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Embodiment Construction

[0027] The present invention provides a high-speed optical quantizer based on the nonlinear harmonic characteristics of high-speed modulation optical emission devices, including:

[0028] A high-speed microwave electrical signal source 1;

[0029] A sampling light source 2, the sampling light source 2 is a cascaded laser and an intensity modulator, or a high-speed mode-locked laser, or a high-speed pulsed laser based on a gain switch, and the sampling light source 2 receives the signal of the high-speed microwave electrical signal source 1;

[0030] An intensity modulator 3, the input end of the intensity modulator 3 is connected to the output end of the sampling light source 2 through a polarization maintaining optical fiber, the intensity modulator 3 is a lithium niobate intensity modulator with a high extinction ratio, and its bandwidth is not less than the sampling The bandwidth of light source 2;

[0031] A high-speed photodetector 4, the input end of the high-speed phot...

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Abstract

A high-speed optical quantizer based on a non-linear harmonic property of a high-speed modulation light transmitting device comprises a high-speed microwave electric signal source, a sampling light source receiving signals of the high-speed microwave electric signal source, a strength modulator, a high-speed photoelectric probe, a to-be-tested simulation microwave signal source sending signals to the strength modulator, a linear electric amplifier receiving signals of high-speed photoelectric probe, a high-speed modulation light transmitting device receiving signals of the linear electric amplifier, a wave guide array optical grating and a parallel high-speed light probe array, wherein the output end of the strength modulator is connected with the output end of the sampling light source, the input end of the high-speed photoelectric probe is connected with the output end of the strength modulator, the input end of the wave guide array optical grating is connected with the output end of the output end of the high-speed modulation light transmitting device, and the input end of the high-speed light probe array is connected with the output end of the wave guide array optical grating.

Description

technical field [0001] The invention relates to the field of microwave photonics, more specifically to an optical quantizer for high-speed modulation of nonlinear harmonic characteristics of an optical emitting device for analog-to-digital conversion. Background technique [0002] High-speed, high-precision quantizers are essential core devices in the fields of radar, high-performance computing, communications, and high-speed instruments. With the rapid development of information technology in recent years, although traditional quantizers relying on electronic technology have been developing, due to the limitations of low bandwidth and fuzzy comparator judgment, the development is very slow and it is difficult to meet need. Compared with traditional electrical quantizers, optical quantizers have advantages such as high resolution, fast sampling rate, high stability, and anti-electromagnetic interference, and have attracted much attention in recent years. In recent years, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35G02F7/00
Inventor 刘建国王佳胜王礼贤祝宁华
Owner 山东中科际联光电集成技术研究院有限公司
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