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Multi-channel parallel acousto-optic modulation device

An acousto-optic modulation and acousto-optic modulator technology, applied in the field of laser applications, can solve the problems of intermodulation and crosstalk of diffracted beams, and achieve the effects of large capacity, simple expansion and high signal utilization rate

Pending Publication Date: 2020-12-29
FUJIAN CASTECH CRYSTALS
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Problems solved by technology

This scheme has serious crosstalk problems, and the generated diffracted beams are very likely to intermodulate and generate additional parasitic beams

Method used

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  • Multi-channel parallel acousto-optic modulation device

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Embodiment Construction

[0011] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0012] Such as figure 1 As shown, a multi-channel parallel signal modulation device includes a laser light source (1), a fiber coupler (2), a fiber collimator (31, 32, 33), an acousto-optic modulation system (41, 42, 43, 51, 52, 53). The acousto-optic modulation system includes an acousto-optic modulator (51, 52, 53) and a radio frequency driver (41, 42, 43).

[0013] The implementation process of the present invention is: after the optical signal generated by the laser light source (1) is split by the 1*N optical fiber coupler (2), the optical signal of N equal divisions is obtained, N>8, and the outgoing beam passes through the optical fiber collimator After (31, 32, 33), N parallel collimated optical signals are generated. Under the control of the radio frequency drive (41, 42, 43), the N optical signals are realized through the acousto-optic modul...

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Abstract

The invention discloses a multi-channel parallel signal modulation device, and mainly relates to the technical field of laser application. The device comprises a laser light source, an optical fiber coupler, an optical fiber collimator and an acousto-optic modulation system. The acousto-optic modulation system comprises an acousto-optic modulator and a radio frequency driver. A laser source signalis equally divided into N paths of optical signals after passing through the optical fiber coupler, optical path shaping and collimation are carried out through collimators on all channels, finally,the optical path shaping and collimation are controlled by an acoustic optical modulator, and N paths of parallel modulation signal output can be obtained. Each acousto-optic modulator is driven and controlled by respective radio frequency, the channels are mutually independent and free of crosstalk, the number of the modulated channels can be determined according to user requirements, only one laser source is adopted, the structure is simple, no crosstalk exists, and the modulation speed is high.

Description

technical field [0001] The patent of the present invention belongs to the field of laser application technology, and specifically refers to a multi-channel parallel signal modulation device. Background technique [0002] Since the 1960s, the rapid development of laser technology has promoted the related research of acousto-optic interaction. Using the acousto-optic diffraction effect can control the characteristic parameters of laser deflection direction, intensity, frequency and phase. The perfect transmission and conversion between signal and optical signal can realize the functions of beam splitting, scanning and frequency selection. The wide application of laser in the fields of laser communication, laser marking machine, spectrometer, laser imaging and display has driven the development of acousto-optic device products, such as acousto-optic modulators, Q switches, tunable filters and deflectors. [0003] Acousto-optic devices mainly achieve the purpose of controlling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/125
CPCG02F1/125
Inventor 吴季李锟影许智宏王城强陈伟陈秋华
Owner FUJIAN CASTECH CRYSTALS
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