A method and device for generating a wideband chaotic signal similar to white noise
A chaotic signal and generating device technology, which is applied in the direction of electromagnetic transmitters, etc., can solve the problem of uneven power spectrum of chaotic signals, and achieve the effect of eliminating periodicity and improving confidentiality
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Embodiment approach 1
[0020] The implementation is as image 3 , is a schematic diagram of a specific structure of a broadband chaotic signal that is similar to white noise. Its specific implementation is as follows: A device for generating a broadband chaotic signal similar to white noise includes a single-feedback semiconductor laser 5 , a single-feedback semiconductor laser 6 , a fiber coupler 3 and a balance detector 4 . Wherein, the single feedback semiconductor laser 5 includes a semiconductor laser 5a, a polarization controller 5b, a fiber coupler 5c, an adjustable optical attenuator 5d, a fiber mirror 5e and a fiber isolator 5f. The single feedback semiconductor laser 6 includes a semiconductor laser 6a, a polarization controller 6b, a fiber coupler 6c, an adjustable optical attenuator 6d, a fiber mirror 6e and a fiber isolator 6f.
[0021] The continuous light output by the semiconductor laser 5a passes through the polarization controller 5b, the fiber coupler 5c and the adjustable optica...
Embodiment approach 2
[0023] The second embodiment is as Figure 6 , is a schematic diagram of another specific structure for generating a broadband chaotic signal similar to white noise. Its specific implementation is as follows: A device for generating a broadband chaotic signal similar to white noise includes a semiconductor laser 7 with one-way injection of external light, a semiconductor laser 8 with one-way injection of external light, a fiber coupler 3 and a balance detector 4 . Wherein, the external light unidirectional injection semiconductor laser 7 includes a semiconductor laser 7a, a polarization controller 7b, a fiber circulator 7c, an optical attenuator 7d, a semiconductor laser 7e and a fiber isolator 7f. The external light unidirectional injection semiconductor laser 8 includes a semiconductor laser 8a, a polarization controller 8b, a fiber circulator 8c, an optical attenuator 8d, a semiconductor laser 8e and a fiber isolator 8f.
[0024] The continuous light output by the semicond...
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