All-optical single side band (SSB) up conversion generator based on silicon-based micro ring resonator

Abstract

The invention discloses an all-optical single side band (SSB) up conversion generator based on a silicon-based micro ring resonator, comprising a central station and a base station, wherein the central station is composed of a pumping signal optical generating system, a tri-frequency component detection signal optical generating system, a silicon-based micro ring resonator system, a first opticalamplifier, an adjustable narrow-band filter and an uplink data receiver; and the base station is composed of an optical fiber bragg grating, a photoelectric detector, a first Mach-Zehnder modulator and an uplink data source. The invention injects pumping light in a silicon-based micro ring to generate a free carrier, and the silicon-based micro ring resonance peak is subjected to blue shift due to the dispersion effect of the free carrier, so as to modulate signals on detection light to realize the all-optical single side band (SSB) up conversion. The used device has small volume and is easy to integrate; and the used SSB modulation is influenced small by optical fiber dispersion, the system cost is reduced and the system structure is simplified due to the characteristics of quad-frequency technology and needless of an uplink light source of the base station.

Description

technical field [0001] The invention relates to a device in the technical field of optical fiber communication, in particular to an all-optical single-sideband up-conversion generating device based on a silicon-based microring resonator cavity. Background technique [0002] Radio over Fiber is an emerging wireless broadband access technology. It mainly combines the two technologies of optical fiber and wireless communication, and uses the characteristics of low loss, large bandwidth and anti-electromagnetic interference of optical fiber to transmit radio frequency signals. The bandwidth and flexibility of the wireless access network are improved. In wireless communication systems over optical, all-optical up-conversion technology plays a very important role. All-optical up-conversion technology is to optically generate coherent light with a certain frequency interval at the central station. The frequency interval is the required microwave / millimeter wave frequency, and then...

AI Technical Summary

Problems solved by technology

The silicon-based microring resonator in this device is small in size and easy to integrate, but the signal generated is double-sideband modulation, which limits the transmission distance. At the same time, the obtained high-frequency carrier is twice the frequency of the central station oscillator. RF signal, a high-frequency oscillator is required in the central station, which leads to an increase in system cost

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