Light pulse shaper based on double-array fiber grating and working method thereof

A fiber grating, optical pulse technology, applied in the coupling of optical waveguides, optics, instruments, etc., can solve the problems of dynamic changes, the shaper is not dynamic, etc., to achieve the effect of bandwidth upgrade, simple structure, and easy bandwidth
CN102707437AInactive Publication Date: 2012-10-03TIANJIN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIVERSITY OF TECHNOLOGY
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a light pulse shaper based on a double-array fiber grating, comprises an optical frequency comb source, an optoisolator and an amplitude controller, wherein the output end of the optical frequency comb source is connected with the input end of the optoisolator, the output end of the optoisolator is connected with the input end of the amplitude controller, and the output end of the amplitude controller outputs even function waveform light pulses. A working method of the light pulse shaper based on the double-array fiber grating comprises the following steps of: (1) inputting; (2) controlling amplitudes: splitting light, adjusting phases, and interfering; and (3) outputting. In the invention, the size of light spectrum amplitudes can be continuously accurately changed by only using a fiber stretcher, thereby realizing the dynamic adjustment of the light spectrum amplitudes; simple structure, little loss and easy coupling with other optical devices are achieved; random waveform light pulses of even function waveforms can be output; and shaping bandwidth can be increased by increasing the wavelength interval of adjacent gratings or increasing the number of gratings, thereby enabling the bandwidth of the device to be easy to upgrade.
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Description

(1) Technical field:

[0001] The invention relates to an ultra-short optical pulse shaper and its working method, in particular to a line-by-line shaping of an input light pulse in the frequency domain by using the phase control and interference effect of a double-array fiber Bragg grating to control the amplitude of each spectral line , an optical pulse shaper for realizing arbitrary even function waveform and its working method. (two) background technology:

[0002] In the past two decades, due to the development of ultrashort optical pulse technology and the widespread use of femtosecond laser systems, and many applications require ultrafast optical pulses, optical pulses of arbitrary shape, pulse shaping systems have achieved rapid It has a great impact on ultrafast laser spectroscopy, nonlinear fiber optics, high energy physics and other fields. Arbitrary waveform optical pulse generation (O-AWG) technology has many applications in the field of optical fiber communicati...

Claims

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