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Chaotic photoelectric oscillator and chaotic signal generation method thereof

A photoelectric oscillator and optical signal technology, applied in the field of microwave photonics, to achieve the effect of increasing information capacity and expanding bandwidth

Inactive Publication Date: 2019-04-26
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the chaotic laser generated by the existing photoelectric oscillator is generally a laser with a fixed single-frequency signal. With the advancement of technology, the fixed single-frequency signal generated by the existing photoelectric oscillator can no longer meet the practical application. Therefore, in order to meet practical applications, it is necessary to manufacture a multi-frequency, broadband optoelectronic oscillator

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  • Chaotic photoelectric oscillator and chaotic signal generation method thereof
  • Chaotic photoelectric oscillator and chaotic signal generation method thereof
  • Chaotic photoelectric oscillator and chaotic signal generation method thereof

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0038] According to one aspect of the present invention, a kind of chaotic photoelectric oscillator is provided, such as figure 1 as shown, figure 1 The structure schematic diagram of the chaotic optoelectronic oscillator provided for the embodiment of the present invention, the chaotic optoelectronic oscillator includes: a frequency sweep laser 1, a phase modulator 2, a circulator 4, a linearly chirped fiber Bragg grating 5, a photodetector 7, an electric Amplifier 8 and beam splitter 9. in:

[0039] Sweep frequency laser 1, phase modulator 2, circulator 4 and photodetector 7 are connected in sequence, linear chirped fiber Bragg grating 5 is connected to circulator 4, photodetector 7, electric amplifier 8, beam splitte...

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Abstract

The invention provides a high-speed changing chaotic photoelectric oscillator and a chaotic signal generation method thereof, and belongs to the technical field of microwave photonics. The chaotic photoelectric oscillator includes a frequency sweeping laser, a phase modulator, a circulator, a linearly chirped fiber Bragg grating, a photoelectric detector, an electrical amplifier and a beam splitter, the frequency sweeping laser, the phase modulator, the circulator and the photoelectric detector are mutually connected to form a straight line, the linearly chirped fiber Bragg grating is connected to the circulator, and the photoelectric detector, the electrical amplifier, the beam splitter and the phase modulator are mutually connected to form a loop. By controlling the power, the polarization state and other conditions of signals in a circuit, the circuit can enter into a chaotic state and output a chaotic signal, and combined with periodically varying optical signals output by the frequency sweeping laser, the chaotic photoelectric oscillator can output the high-speed changing chaotic signal.

Description

technical field [0001] The invention relates to the technical field of microwave photonics, in particular to a chaotic photoelectric oscillator and a method for generating a chaotic signal. Background technique [0002] Chaos is a phenomenon ubiquitous in natural society, which describes the uncertain random-like behavior in a definite system, and is the unity of determinism and randomness. The determinism of chaos is manifested in the fact that it is generated by a definite system and can be described by definite differential or difference equations; the randomness of chaos is manifested in that its trajectory is unpredictable and has a noise-like property. [0003] There are many common ways to generate chaotic laser, the most typical one is to generate chaotic laser based on semiconductor laser. The main guiding idea is to add a degree of freedom to generate chaotic laser. The main common methods include: external light injection semiconductor laser, optical feedback se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 李明王光强郝腾飞祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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