Optical chaos generating device based on silicon photon microcavity

A technology of silicon photonics and microcavity, which is applied to the device for controlling the output parameters of lasers, the structure of optical resonators, lasers, etc., can solve the problems of high cost, inability to mass-produce, semiconductor lasers cannot be integrated, etc., and achieve low manufacturing cost , high local energy density, high quality factor effect

Active Publication Date: 2017-05-10
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] Optical chaos, as a branch of chaos theory, covers the fields of chaotic synchronous secure communication, high-performance optical detection and ranging, ultra-speed physical random number generation, etc., and it develops very rapidly. Most of the existing methods of optical chaos generation use semiconductor Lasers produce chaos, and there are problems such as semiconductor lasers cannot be integrated with CMOS, cannot be mass-produced, and have high costs.

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  • Optical chaos generating device based on silicon photon microcavity
  • Optical chaos generating device based on silicon photon microcavity
  • Optical chaos generating device based on silicon photon microcavity

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specific Embodiment 1

[0018] attached image 3 It is the output result of the initial stage of oscillation in the silicon photonic microcavity when the wavelength of the injected light is 1573.6 nm. As can be seen from the figure, it can be seen from the figure that the fluctuation of the time series is basically at the background noise level, while the phase diagram trajectory is basically shrunk to one point, and there is a weak signal appearing around 120MHz in the spectrum diagram. This series of results shows that the silicon photonic microcavity is now in the initial stage of oscillation.

specific Embodiment 2

[0020] attached Figure 4 It is the self-pulsation in the silicon photonic microcavity when the wavelength of the injected light is 1573.8nm. As can be seen from the left figure, the time series has some spontaneous pulsations, which will suddenly deviate from the equilibrium point and then quickly collapse back to the equilibrium point. The phase diagram shows that the system oscillates around the equilibrium point most of the time. Occasional bursts return to equilibrium after approximately 2 periods of oscillation. Further spectrum measurement shows that the system has an oscillation peak of 120MHz, and a strong low-frequency oscillation appears near 0-40MHz. This low-frequency oscillation corresponds to the self-pulsation signal. This result shows that the silicon photonic microcavity is already transitioning to a more complex chaotic state.

specific Embodiment 3

[0022] attached Figure 5 It is the optical chaotic oscillation phenomenon in the microcavity when the wavelength of the injected light is 1575.1nm. First of all, some complex aperiodic oscillations appear in the time series of the system. These oscillating phase trajectories no longer repeat, but continuously extend and stretch around the center of the attractor. Further spectrum measurement shows that the test signal spectrum is continuously covered from the low frequency band to the cut-off point of 200MH. These time domain and frequency domain test results clearly illustrate the generation of optical chaos.

[0023] Obviously, the present invention is based on the optical chaos generating device of silicon photonic microcavity to produce chaos with silicon photonic microcavity device, so that it can be fully integrated in CMOS, the manufacturing cost is low, and it is suitable for large-scale mass production; and it has smaller mode volume and higher Quality factor, hig...

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Abstract

The invention relates to an optical chaos generating device based on a silicon photon microcavity. The optical chaos generating device comprises a tunable laser, an erbium-doped fiber amplifier (EDFA), a fiber polarization controller (FPC), an optical isolator (OI), a polarizing plate, a silicon photon microcavity and a photodetector (PD). The optical chaos generating device based on a silicon photon microcavity generates optical chaos by using the silicon photon microcavity, enables the optical chaos to be fully integrated with CMOS, has low manufacturing cost, is suitable for large-scale mass production, has a smaller model volume, a higher quality factor, high local energy density, good light control performance, is conducive to direct operation of light processing, achieves low-threshold operation, is fully integrated and good in actual stability.

Description

technical field [0001] The invention relates to the field of optoelectronic information science, in particular to an optical chaos generating device based on a silicon photon microcavity. Background technique [0002] Optical chaos, as a branch of chaos theory, covers the fields of chaotic synchronous secure communication, high-performance optical detection and ranging, and ultra-speed physical random number generation. Lasers produce chaos, and there are problems such as semiconductor lasers cannot be integrated with CMOS, cannot be mass-produced, and have high costs. Contents of the invention [0003] The object of the present invention is to propose a kind of optical chaos generation device that can be integrated with CMOS, can mass-produce and cost is lower, obtain the method for optical chaos in the silicon photonic microcavity, in the Drude plasma in the silicon photonic microcavity Based on the coupling with optical oscillation, the specific evolution path of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/06H01S5/10
CPCH01S5/0604H01S5/1042
Inventor 吴加贵段书凯郑吉程月余惠芳
Owner SOUTHWEST UNIVERSITY
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