Optically controlled multi-waveform optical pulse synthesizer

Abstract

The invention discloses an optical-control multi-waveform pulse synthesizer and relates to the field of optical communication and laser. The optical-control multi-waveform pulse synthesizer comprises a mould locking laser device (21), an optical circulator (5), a band-pass filter (8), a high-speed photoelectric detector (9), a tunable laser (22), a semiconductor optical amplifier (6), a phase modulator (7), a radio frequency signal source (10), a high nonlinear optical fiber (11), first, second, third and fourth 1*2 optical couplers (1, 2, 3, 4). The optical-control multi-waveform pulse synthesizer provided by the invention can flexibly synthesize square, triangular and zigzag optical pulses following the difference of the output wavelengths of the tunable laser (22) and the output power of the radio frequency signal source (10).

Description

technical field [0001] The invention relates to the fields of optical communication and laser, in particular to an optically controlled multi-waveform optical pulse synthesizer. Background technique [0002] With the development of science and technology, especially the rapid progress of information technology, ultrashort laser pulses are developing rapidly, and people have produced ultrashort optical pulses of picosecond or even femtosecond level. However, the current traditional ultrashort optical pulse generation scheme based on mode-locking technology can only output Gaussian or hyperbolic secant pulses, which cannot meet the needs of special applications. [0003] The optical pulse waveform synthesis scheme mainly includes: (1) The optical pulse waveform synthesis system based on the spatial 4f Fourier transform: it mainly consists of a pair of diffraction gratings, a lens and a pulse shaping template, wherein the diffraction grating plays the role of transforming each ...

AI Technical Summary

Problems solved by technology

However, once the fiber grating is manufactured and its structural parameters are fixed, the spectral response performance cannot be changed. As a result, in order to obtain multi-waveform optical pulses, multiple fiber gratings that match it need to be scheduled, which has poor adjustment flexibility and high cost.

[0004] In summary, the current optical pulse waveform synthesis system has a complex structure and high cost, which greatly limits the development of laser and optical communication fields.

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