Frequency shift keying (FSK) optical modulation signal generator based on silicon-based micro ring resonator

Abstract

The invention provides a frequency shift keying (FSK) optical modulation signal generator based on a silicon-based micro ring resonator, comprising an adjustable laser, a radio frequency signal generator, a Mach-Zehnder modulator, a data source and a silicon-based micro ring resonator system, wherein the adjustable laser is connected with the input end of the Mach-Zehnder modulator to transmit optical carrier signals, the radio frequency signal generator is connected with the radio frequency interface of the Mach-Zehnder modulator to transmit high frequency electric signals, the output end of the Mach-Zehnder modulator is connected with the silicon-based micro ring resonator system to transmit carrier suppression optical signals, and the data source is connected with the silicon-based micro ring resonator system to transmit electric signals with adjustable amplitude. The silicon-based micro ring resonator used in the invention has simple structure and small volume, easy integration, simple modulation, convenient control and high modulation velocity which is up to a plurality of Gbit/s, and the radius of the micro ring is only a plurality of microns to dozens of microns.

Description

technical field [0001] The invention relates to a device in the technical field of optical fiber communication, in particular to a device for generating a frequency shift keying optical modulation signal based on a silicon-based microring resonator cavity. Background technique [0002] Frequency shift keying (FSK) optical modulation signal is to carry signals by controlling the difference of optical carrier frequency, and has important application value in optical fiber communication. Compared with differential phase shift keying and amplitude shift keying optical modulation signals, frequency shift keying optical modulation signals are the least sensitive to fiber nonlinear damage, and have a constant envelope and can perform amplitude remodulation, so this code pattern is in There are good applications in passive optical networks and optical packet switching networks. The frequency shift keying optical modulation signal can be demodulated by a balanced receiver, the recei...

AI Technical Summary

Problems solved by technology

The modulator structure of this technology is complex, and at the same time, the phase relationship between the radio frequency signals needs to be strictly controlled, which increases the difficulty of modulation

Images