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High-precision optical phase quantization method based on multiple-wave interference

A quantization method and optical phase technology, which can be applied in the direction of optical demodulation, optics, instruments, etc., can solve the problems of low accuracy of quantization results, difficult ratio of high-order harmonics to signal power, etc.

Active Publication Date: 2017-05-10
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The present invention provides a method for high-precision phase quantization of signals in all-optical signal processing, aiming to solve the problems of low precision of quantization results and difficult power ratio between high-order harmonics and signals existing in the existing research results of optical phase quantization The problem of precise control

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  • High-precision optical phase quantization method based on multiple-wave interference
  • High-precision optical phase quantization method based on multiple-wave interference
  • High-precision optical phase quantization method based on multiple-wave interference

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Embodiment

[0038] This embodiment is based on Figure 8 The schematic diagram of the simulation structure of the third-order quantization of the three-light wave interference phase is shown to illustrate the high-precision phase quantization of the multi-light wave interference.

[0039] The first part is higher harmonic generation. The signal and the pumping light 1 are input into the high non-fiber 1 together, wherein the frequency of the pumping light is 193.1THz, and the power is 100mw. Signal light is generated by Figure 8 The lower left signal generation part shows that the signal light source and the sine wave are jointly input into the phase modulator, and the transfer function of the phase modulator is: where E in (t) is the input optical signal, the frequency is 193.13THz, the power is 1mw; data(t) is the input electrical domain sine wave, the amplitude is 1, and the frequency is 50M; is the internal phase offset of the phase modulator, set to 180°. The phase modulator ...

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Abstract

The invention discloses a high-precision multiple-wave interference phase quantization method based on phase sensitive amplification in all-optical signal processing. The method comprises the steps of improving and rectifying the quantization result of a low-order harmonic by introducing one or more specific higher-oder harmonics based on choosing a specific phase harmonic and signal light to conduct interference currently; controlling precisely the power ratio between interference light waves by the achievement method of separation of interference light wave generation and superposition simultaneously. According to the high-precision multiple-wave interference phase quantization method based on the phase sensitive amplification, a more precise phase quantization result and more convenient power ratio control are brought by, and meanwhile the method can be applied to the regeneration of phase-modulated signals and achieve the purpose of high-precision quantization.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for realizing high-precision phase quantization in the process of optical signal processing. This method is mainly used to quantify the phase of the optical signal, and can respond to the regeneration of the phase-modulated signal that is affected by noise and produces phase ambiguity. It is a method that can obtain more accurate phase quantization results, especially in the field of all-optical signal processing. . Background technique [0002] With the continuous improvement of the level of social informatization, the amount of information is also increasing explosively, and the transmission pressure carried by the optical communication system is also increasing. Using the all-optical method to process optical signals can avoid photoelectric and electro-optical conversion. Meet the needs of high-speed signal processing. Nowadays, there are many studies on all-...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F2/00
CPCG02F2/002
Inventor 王宏祥何超杰纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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