Acousto-optic and electrooptical device with polarization maintaining optical fibers

Abstract

The invention belongs to the technical field of phoelectron, and particularly relates to an acousto-optic and electrooptical device with polarization maintaining optical fibers. The acousto-optic andelectrooptical device with polarization maintaining optical fibers comprise inputting polarization maintaining optical fibers, a shell and outputting polarization maintaining optical fibers, an inputting end collimator, a polarizer, an electrooptical modulator, a polarization analyzer, an acousto-optic modulator and an outputting end collimator which are successively connected are arranged in theshell; the inputting polarization maintaining optical fibers and the outputting polarization maintaining optical fibers are mounted on the outer surface of the shell; and a signal socket which is fixed on the outer surface of the shell is connected with the electrooptical modulator, a radiofrequency socket and the acousto-optic modulator through leads. The electrooptical modulator is combined to the acousto-optic modulator, high-speed modulation is realized by a modulation function of the electrooptical modulator, and high on-off extinction ratio is realized by the acousto-optic modulator.

Description

technical field [0001] The invention belongs to the technical field of optoelectronics, and relates to optical devices, in particular to optical modulators used in the field of optical fibers, in particular to a polarization-maintaining optical fiber acousto-optic optical device. Background technique [0002] As one of the important advanced manufacturing technologies, laser processing technology has been widely used in many industrial manufacturing fields. When laser direct writing technology is used for material processing, the processing resolution it can achieve has been limited by the diffraction limit of classical optical theory, and it is difficult to process at the nanometer scale. [0003] The emergence of femtosecond pulsed laser not only provides a means for studying the ultrafast process of light-matter interaction, but also provides a rare light source for the development of advanced micro-nano processing technology. In recent years, as one of the latest laser ...

AI Technical Summary

Problems solved by technology

6ns is almost the limit time of polarization-maintaining optical fiber acousto-optic modulator, and it is difficult to make a big breakthrough

[0008] The waveguide electro-optic modulator has low operating voltage (usually less than 5V), fast modulation speed (optical pulse rise / fall time is about 0.01ns), and high modulation frequency (about 40GHz). It is a high-speed modulator commonly used in the field of optical communication. The optical power is very low (usually less than 50mw), which cannot meet the frequency reduction requirements of femtosecond pulsed lasers

[0009] Spatial electro-optic modulators have a fast modulation speed (optical pulse rise / fall time can be less than 1ns), and high optical power, but their on-off extinction ratio is low, and it is difficult to meet the frequency reduction requirements of femtosecond pulsed lasers.

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