Light bandwidth calibration device for broadband communication signal analyzer
A signal analyzer, broadband communication technology, applied in electromagnetic wave transmission systems, electromagnetic receivers, electrical components, etc., can solve the problems of large temperature influence, high bandwidth cannot be accurately calibrated, etc., achieve high stability, improve bandwidth calibration range, The effect of improving calibration accuracy
Inactive Publication Date: 2014-11-05
中国航天科工集团第二研究院二〇三所
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[0005] The purpose of the present invention is to provide an optical bandwidth calibration device for broadband communication signal analyzers, to solve the problem that the standard device is greatly affected by temperature during the optical bandwidth calibration process of broadband communication signal analyzers, and the problem that high bandwidth cannot be calibrated accurately
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[0014] An optical bandwidth calibration device for a broadband communication signal analyzer, comprising: a semiconductor narrow linewidth laser 1, a high-speed optical intensity modulator 2, and also includes: a microwave signal source 3, a microwave drive amplifier 4, a DC power supply 5, and a circulator 6. Fiber Bragg grating reflector 7. The communication signal analyzer to be calibrated 8. Light absorbing load 9.
[0015] The output end of the semiconductor narrow-linewidth laser 1 is connected to the polarization-maintaining optical fiber at the input end of the optical fiber of the high-speed optical intensity modulator 2, the output end of the microwave signal source 3 is connected to the microwave cable at the input end of the microwave driving amplifier 4, and the output end of the microwave driving amplifier 4 is connected to the high-speed optical intensity The microwave input end of the modulator 2 is connected with a microwave cable, the output end of the DC powe...
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The invention discloses a light bandwidth calibration device for a broadband communication signal analyzer, which comprises a semiconductor narrow-linewidth laser (1), a high-speed light intensity modulator (2), a microwave signal source (3), a microwave driving amplifier (4), a direct current (DC) power supply (5), a circulator (6), a fiber bragg grating reflector (7), a calibrated broadband to-be-communicated signal analyzer (8) and a light absorption load (9). By utilizing the 30GHz-bandwidth optical modulator to realize the calibration of a 60GHz-bandwidth communication signal analyzer, the bandwidth calibration range of the conventional calibration device is greatly improved, and thus well meeting the demands of the current photo-communication test and calibration. In addition, the wavelengths of two optical signals output by the calibration device are associated with the signal frequency output by a microwave signal source, so that the two optical wavelengths output after light modulation have good relevance, and the bandwidth calibration accuracy can be further greatly improved.
Description
technical field [0001] The invention relates to a broadband optical receiving and calibrating device, in particular to an optical bandwidth calibrating device for a broadband communication signal analyzer. Background technique [0002] In recent years, the development of optoelectronic technology in the world has been very rapid, and the transmission rate of optical communication systems has continued to increase. Optical receivers and electro-optic converters are important devices in optical communications, and their bandwidth directly determines the transmission rate of optical communication systems. Broadband communication signal analyzer is an important measurement equipment for optical communication and microwave photonic technology, mainly used to measure important devices such as optical-to-optical converter (O / E) and electro-optical converter (E / O) in optical fiber communication. [0003] There are mainly two types of calibration devices in the past: the first type ...
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IPC IPC(8): H04B10/07H04B10/61H04B10/071
Inventor 孙小续杜庆荣
Owner 中国航天科工集团第二研究院二〇三所