Passive-parallel-modulator-array-based light modulation method and device

Abstract

The invention relates to a passive-parallel-modulator-array-based light modulation method and a passive-parallel-modulator-array-based light modulation device. The method comprises that: N modulation symbols are generated in parallel from light signals transmitted by a light source by a multidimensional light modulation unit, wherein N is a natural number, and the modulation symbols form a complete modulation symbol space or a subset of the complete modulation symbol space; the multidimensional light modulation unit can modulate the light signals from one or more modulation dimensions of the light signals; and data is mapped to the modulation symbols by a modulation symbol selection unit to finish the modulation process of the data to the modulation symbols. By the light modulation method and the light modulation device provided by the invention, a passive-device-based modulator has the advantages of low power consumption, control simplicity and the like, and is easy to integrate and favorable for the miniaturization and integration of a modulation module and a transmitter.

Description

technical field [0001] The invention relates to the technical fields of optical communication, optical interconnection and optical information transmission, in particular to an optical modulation method and device based on a passive parallel modulator array. Background technique [0002] With the continuous advancement of social informatization, the existing optical transmission system cannot meet the increasing demand for interconnection speed, and it is urgent to further increase the system transmission capacity. In an optical transmission system based on optical wavelength division multiplexing, the available bandwidth limitation caused by the fiber loss window and the narrow-band filtering effect caused by the cascade of optical devices in the optical transmission channel require the maximum spectral efficiency of optical transmission. If the binary modulation format is used, the increase in the transmission rate will inevitably lead to an increase in the baseband bandwi...

AI Technical Summary

Problems solved by technology

With the continuous increase of the modulation dimension and modulation rate of the transmitter, the external modulation method based on the serial mode, the power consumption of the modulator switch and the driving part continues to increase, and the power supply and heat dissipation design become increasingly complex, which limits the modulation module and the transmitter. miniaturization and integration of

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