Multi-wavelength chaotic signal parallel output generation device and method
A technology of chaotic signal and generating device, which is applied in the direction of secure communication through chaotic signal, secure communication device, multiplexing communication, etc., can solve the problem of optical carrier with low bandwidth of chaotic optical signal, which is not suitable for high-speed chaotic optical communication, and cannot be applied. High-speed true random number generation and other problems to achieve the effect of good randomness
Active Publication Date: 2021-08-24
WUHAN UNIV OF TECH
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This structure realizes a multi-wavelength chaotic laser in a real sense, but the bandwidth of the chaotic optical signal output by this laser is low, which cannot be applied to high-speed true random number generation, and is not suitable as an optical carrier for high-speed chaotic optical communication.
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[0021] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0022] like figure 1 The multi-wavelength chaotic signal parallel output generation device shown includes a semiconductor optical amplifier 1, a single-mode fiber 2, an adjustable optical attenuator 3, an optical circulator 4, a multi-passband filter 5, a 1×2 fiber coupler 6, a polarization Controller 7 and optical isolator 8; the output end of described semiconductor optical amplifier 1 is connected with the input end of single-mode optical fiber 2, and the output end of single-mode optical fiber 2 passes the first communication of adjustable optical attenuator 3 and optical circulator 4 The communication end of the multipass band filter 5 is connected with the second communication end of the optical circulator 4, the third communication end of the optical circulator 4 is connected with the input end of the 1×2 fiber coupler 6, and the 1×2 opti...
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The invention discloses a multi-wavelength chaotic signal parallel output generation device. The output end of a semiconductor optical amplifier of the device is connected with the input end of a single-mode optical fiber, the output end of the single-mode optical fiber is connected with the first communication end of an optical circulator through a variable optical attenuator, and the communication end of a multi-passband filter is connected with the second communication end of the optical circulator; the third communication end of the optical circulator is connected with the input end of a 1 * 2 optical fiber coupler, the first output end of the 1 * 2 optical fiber coupler is connected with the input end of an optical isolator through the polarization controller, the output end of the optical isolator is connected with the input end of the semiconductor optical amplifier, and the second output end of the 1 * 2 optical fiber coupler is a chaotic signal output end. Parallel output of multiple paths of chaotic optical signals with different wavelengths of the semiconductor optical amplifier optical fiber ring laser can be realized, the chaotic optical signals of different channels have good randomness, and different wavelengths are mutually independent.
Description
technical field [0001] The invention relates to the technical field of chaotic lasers, in particular to a multi-wavelength chaotic signal parallel output generating device and method. Background technique [0002] Chaotic signals are widely used in chaotic secure communication, optical time domain reflectometer, optical fiber sensing, random bit generation, chaotic ranging and other fields due to their characteristics of being very sensitive to initial values, wide bandwidth, and long-term unpredictable. At present, the technical research on using optical injection and optical feedback to excite the chaotic oscillation of semiconductor lasers has been very mature. However, limited by the structural characteristics of semiconductor lasers, the wavelength tuning range of chaotic optical signals generated by this method is small, and it is difficult to achieve multi-wavelength parallel output. Combining the development history of laser application in optical communication syst...
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Login to View More IPC IPC(8): H04B10/291H04B10/50H04B10/572H04J14/02H04L9/00
CPCH04B10/2912H04B10/503H04B10/572H04J14/0202H04J14/0283H04L9/001
Inventor傅雪蕾李政颖王凯平张志娥
OwnerWUHAN UNIV OF TECH