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Millimeter wave subcarrier light pulse signal generator based on cascade all-pass filter

An all-pass filter, pulse signal technology, applied in the coupling of optical waveguides, electromagnetic wave transmission systems, electrical components, etc., can solve the problem of low pulse energy conversion efficiency, achieve high energy utilization efficiency, simple structure, easy to design and prepare and the effect of the operation

Inactive Publication Date: 2009-10-21
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is simple and easy, but the pulse energy conversion efficiency is low

Method used

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  • Millimeter wave subcarrier light pulse signal generator based on cascade all-pass filter
  • Millimeter wave subcarrier light pulse signal generator based on cascade all-pass filter
  • Millimeter wave subcarrier light pulse signal generator based on cascade all-pass filter

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0024] see first figure 1 , figure 1 is a schematic diagram of a pulse train generated by a single G-T cavity. A single G-T cavity is composed of two parallel mirrors, the front one is a low reflection mirror, the back one is a high reflection mirror, and there is no dispersion medium between the mirrors. R and R 1 are the reflectivity of the low reflector and high reflector of the G-T cavity, respectively, R 1 =1, R<1. n is the refractive index of the medium in the GT cavity, and d is the thickness of the medium in the G-T cavity. The principle of pulse sequence generation by a single G-T cavity is that when a narrow pulse width light pulse is incident on the G-T cavity, a pulse sequence will be generated due to the reflection on the two cavity surfaces and the time d...

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Abstract

The invention relates to a millimeter wave subcarrier light pulse signal generator based on a cascade all-pass filter, which consists of an ultrashort pulse fiber laser with collimation coupling output, the cascade all-pass filter, a fiber coupler and a transmission fiber connected in turn. The all-pass filter is a G-T filter or an optical waveguide annular resonant cavity. The millimeter wave subcarrier light pulse signal generator has the characteristics of low cost, simple design and processing and high energy conversion efficiency.

Description

technical field [0001] The invention relates to a millimeter wave subcarrier optical pulse signal generator based on a cascaded all-pass filter. The invention can be applied to optical fiber wireless communication technology, microwave photonics technology and the like. Background technique [0002] With the development of mobile communication technology, people's demand for multimedia including voice, data, image and video is becoming more and more urgent. In order to improve the information capacity and communication rate, it is necessary to use the millimeter wave radio frequency signal with a higher frequency than microwave. Radio over Fiber (RoF) technology is a combination of microwave communication and optical communication, which can solve the problems of communication system information capacity and transmission rate. In this technology, the information transmission between the base station and the central office still uses optical fiber; the light wave transmitted...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12G02B6/26H04B10/508
Inventor 徐钦峰方祖捷叶青潘政清蔡海文瞿荣辉
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI