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Parabola pulse generating device capable of directly modulating full duty cycle

A pulse generating device and parabolic technology, applied in the field of communication, can solve the problems of difficult regulation, difficult operation, complex structure of parabolic pulse generation, etc., and achieve the effect of easy adjustment, simple control and good stability

Pending Publication Date: 2020-06-05
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing parabolic pulse generation methods are complicated in structure and difficult to operate (Ng T.T., ParmigianiF. Ibsen M., Zhang ZH W, Petropoulos P., Richardson D, J.. Compensation of Linear Distortions by Using XPM With Parabolic Pulses as a Time Lens. IEEEPhoton.Technol.Lett,Vol.20,2008,pp.1097-1099), and there are problems that are difficult to control due to the influence of SPM, FWM and other factors in nonlinear optical fibers

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  • Parabola pulse generating device capable of directly modulating full duty cycle
  • Parabola pulse generating device capable of directly modulating full duty cycle

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Embodiment 1

[0012] Example 1. A parabolic pulse generating device that directly modulates full duty, which is composed of Figure 1-2 As shown, it includes a laser source 1, the laser source 1 is connected to the input end of the intensity modulator 2, the radio frequency end of the intensity modulator 2 is connected to the triangular signal generator 3, and the output end of the intensity modulator 2 is the final output end.

[0013] Working principle: First, the output light source of laser source 1 enters the intensity modulator 2, uses the intensity modulator 2 to modulate the function curve, sets the bias voltage at the minimum point of the modulation curve, and selects the triangular signal (generated by the triangular signal generator 3) for the radio frequency signal , which can perfectly reproduce the curve information of the minimum point of the modulation curve. Since the curve function is the square of the sine, the position of the trough can be approximately regarded as a pa...

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Abstract

The invention discloses a parabola pulse generating device capable of directly modulating full duty cycle. The device comprises a laser source (1) connected with the input terminal of an intensity modulator (2), a radio frequency terminal of the intensity modulator (2) is connected with a triangular signal generator (3), and the output terminal of the intensity modulator (2) is the final output terminal. According to the invention, the full-duty parabolic pulse can be obtained through direct modulation, the repetition frequency of the obtained parabolic pulse is twice of the frequency of a modulation signal, multiplexing is not needed, and the device is simple and easy to adjust; and meanwhile, the shape and the size of the obtained parabolic pulse can be controlled by changing the voltageof the added radio frequency signal.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a parabolic pulse generating device for directly modulating full duty. Background technique [0002] The parabolic pulse has the characteristic of achieving perfect quadratic phase modulation on the time variable and producing a linear chirp. As an important pulse type in the field of optical communication, it is widely used in temporal imaging, optical communication, optical signal detection and optical signal processing and other fields. The existing parabolic pulse generation methods are complicated in structure and difficult to operate (Ng T.T., ParmigianiF. Ibsen M., Zhang ZH W, Petropoulos P., Richardson D, J.. Compensation of Linear Distortions by Using XPM With Parabolic Pulses as a Time Lens. IEEE Photon.Technol.Lett, Vol.20, 2008, pp.1097-1099), and there are problems that are difficult to control due to the influence of SPM, FWM and other factors in nonlinear op...

Claims

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Application Information

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IPC IPC(8): H03K7/08
CPCH03K7/08
Inventor 江阳王蓉
Owner GUIZHOU UNIV