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Method and apparatus for generating ultra-broad band monocycle impulse

A generation method and technology of a generation device, which are applied in the fields of optoelectronic technology and optical fiber communication, can solve the problems such as difficulty in generating stable single-cycle pulses, and achieve the effects of stable waveform and easy coding and modulation.

Inactive Publication Date: 2009-07-15
TSINGHUA UNIV
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  • Claims
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Problems solved by technology

[0004] The problem to be solved by the embodiments of the present invention is to provide a method and device for generating ultra-wideband single-cycle pulses, so as to overcome the defects in the prior art that it is difficult to generate stable single-cycle pulses and can be encoded and modulated at the same time

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  • Method and apparatus for generating ultra-broad band monocycle impulse
  • Method and apparatus for generating ultra-broad band monocycle impulse
  • Method and apparatus for generating ultra-broad band monocycle impulse

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] The schematic diagram of the principle of a single-cycle pulse generation in the embodiment of the present invention is as follows figure 1 shown. First, the generated signal light and probe light are cross-polarized modulated, and then the modulated probe light is filtered through a band-pass filter to generate pulses with opposite polarities on two perpendicular polarization states that are orthogonal to each other; then the pulse is processed After time-delay processing, the light pulses in the shape of ultra-broadband single-cycle pulses are combined; finally, photoelectric detection is performed on the light pulses to generate ultra-broadband single-cycle puls...

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Abstract

The invention discloses a generating method of ultra-broad band monocycle pulse, the method comprises: generating a signal light; performing cross polarization modulation for the signal light and the detecting light; filtering the modulated detecting light by a filter and generating pulses with opposite polar on two vertical polarization states which are orthogonal mutually; performing the time delay processing for the pulses with opposite polar to compose to an ultra-broad band monocycle pulse-shaped light pulse; performing the light detection for the light pulse to generate an ultra-broad band monocycle pulse. The invention also discloses a generating device of the ultra-broad band monocycle pulse. The invention adopts the high non-linear optical fiber to implement the cross polarization modulation and filters the signal light interference by the filter to enable the waveform generated by the cross polarization to be stabilized; and the invention is convenient for implementing the coding and the modulating of the light carrying ultra-broad band signal based on users.

Description

technical field [0001] The invention relates to the fields of optoelectronic technology and optical fiber communication technology, in particular to a method and device for generating ultra-wideband single-cycle pulses. Background technique [0002] Since the 1970s, UWB (Ultra Wide Band) technology has been widely used in radar, sensing and military communications. With the 2002 FCC (Federal Communications Commission, US Federal Communications Commission) regulations UWB technology can be used in civil communications, UWB system can access and share 3.1 ~ 10.6GHz 7500MHz bandwidth, this technology has attracted widespread attention. UWB communication is becoming a powerful competitive technology for short-distance wireless communication due to its low power consumption, high transmission rate, and strong anti-interference ability. However, due to the limited ability of microwave electronic devices to process high-frequency signals, the generated UWB single-cycle pulses have...

Claims

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Application Information

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IPC IPC(8): G02F1/35H04B1/69H04B10/00H04B10/556H04L27/26
Inventor 陈宏伟陈明华谢世钟
Owner TSINGHUA UNIV
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