A Remote High Frequency Microwave Oscillation Source in Optical Millimeter Wave System

Abstract

The invention provides a remote high-frequency microwave oscillating source in an optical millimeter wave system. 90% of laser generated by a DFB (Distributed Feed Back) laser is input into a 40G modulator via a polarization controller, 10Gbit / s NRZ (Non Return to Zero) data is amplified by an SHF803P and then input into the 40G modulator, and data intensity modulation is implemented on the laser to generate high-speed broadband modulated light; the light is amplified by an erbium doped fiber amplifier, then input into an XTM50, and filtered to obtain a multiplex clock spectrum, and the spectrum is combined with 10% DFB laser to obtain a spectrum of the high-frequency microwave oscillating source; and the spectrum of the high-frequency microwave oscillating source is amplified via a KPS erbium doped fiber amplifier, input to a near dispersion flattened fiber set, and transmitted to a remote base station to form the high-frequency microwave oscillating source, and electrical signals after beat frequency can replace an electric local oscillator source in a millimeter wave uplink system. Backward Raman amplification is employed; and an AQ6319 and an E4440A respectively measure the spectral and electrographic characteristics of signals. The method for generating the remote high-frequency microwave oscillating source can be used as significant reference in researching the optical millimeter wave system in a high bit rate, and can be widely applied to the fields including microwave photonics and fiber communication.

Description

Technical field [0001] The invention relates to a remote high-frequency microwave oscillation source in an optical millimeter wave system, which can be applied to the fields of microwave photonics, optical fiber communication, wireless optical fiber access and the like. Background technique [0002] In recent years, various services such as big data, mobile traffic, and broadband streaming media have continued to increase rapidly, and the demand for high-speed and large-capacity wireless communication is increasing. In order to realize wireless broadband communication, it is necessary to increase its operating frequency. However, at present, most of the wireless services at home and abroad are concentrated below 3GHz, and the existing low-band frequency resources are almost all occupied, and the frequency resources above 3GHz (such as 40GHz, 60GHz) are generally seldom used in commercial systems. Mostly used in experimental research. If this frequency band window can be fu...

AI Technical Summary

Problems solved by technology

However, an expensive electric high-frequency local oscillator (such as 40GHz, 60GHz) usually has to be introduced into the optical millimeter wave uplink subsystem. If effective measures can be taken to replace the electric high-frequency local oscillator, it will be a great improvement for the system

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