Optical fiber acoustic-optic device with high-performance stability

Abstract

The invention relates to an optical device, in particular to an acoustic-optic device for the optical fiber field, belongs to the technical field of the photoelectron, and specifically relates to an optical fiber acoustic-optic device with high-performance stability. The optical fiber acoustic-optic device comprises an input optical fiber, a metal box, and an output optical fiber; the input optical fiber and the output optical fiber are connected at two ends of the metal box; a mounting plate is fixed in the metal box; an input end collimator, an acoustic-optic crystal and an output end collimator are orderly fixed on the mounting plate; the input optical fiber is connected the input end collimator, and the output end collimator is connected with the output optical fiber. By adopting the arrangement of the mounting plate, the deformation influence of the metal box can be effectively eliminated, and the problem that the performance of the optical fiber acoustic-optic device is reduced after being used for a certain time is solved.

Description

technical field [0001] The invention relates to an optical device, in particular to an acousto-optic device used in the optical fiber field, and belongs to the field of optoelectronic technology, in particular to an optical fiber acousto-optic device with high performance and stability. Background technique [0002] Fiber-optic acousto-optic device is the abbreviation of fiber-coupled acousto-optic device, which is a new type of optoelectronic device that integrates optical fiber and acousto-optic device. Optical fiber acousto-optic devices mainly include single-mode (multi-mode / polarization-maintaining) fiber-optic acousto-optic frequency shifter, single-mode (multi-mode / polarization-maintaining) fiber-optic acousto-optic modulator, single-mode (multi-mode / polarization-maintaining) fiber-optic acousto-optic switch , single-mode (multimode / polarization maintaining) fiber optic acousto-optic Q switch, single-mode (multimode / polarization maintaining) fiber optic acousto-optic ...

AI Technical Summary

Problems solved by technology

These methods can reduce but cannot fundamentally eliminate the deformation effect of the metal box shell, because the metal box also has a heat dissipation function (transfer the heat of the acousto-optic crystal to the whole machine shell through the metal box), and the metal box must be screwed The box is firmly mounted on the housing of the complete machine

Screw installation may cause deformation of the metal box, and the deformation of the whole machine shell with the ambient temperature (or deformation caused by other external forces) may also cause deformation of the metal box. The deformation of the metal box will reduce the performance of the optical fiber acousto-optic device (usually the insertion loss Increase)

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