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Optoelectronic oscillator based optical pulse generation device

A technology of photoelectric oscillator and generating device, which is applied in the field of microwave photonics and optical signal processing, and can solve the problems of four-wave mixing efficiency reduction, phase distortion, and optical pulse width, etc.

Inactive Publication Date: 2014-03-19
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the methods reported in the literature all use two phase-unrelated independent lasers to enter highly nonlinear optical fibers or semiconductor optical amplifiers, the resulting four-wave mixing efficiency will be reduced, and their phases cannot be completely locked, so The width of the generated optical pulse will be wider, and there will be a certain phase distortion

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  • Optoelectronic oscillator based optical pulse generation device
  • Optoelectronic oscillator based optical pulse generation device
  • Optoelectronic oscillator based optical pulse generation device

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Embodiment Construction

[0020] see figure 1 As shown, the present invention provides a kind of optical pulse generator based on photoelectric oscillator, comprising:

[0021] A laser 10 with an output power up to 200 milliwatts;

[0022] A modulator 11, the input end of which is connected to the output end of the laser 10, the modulator 11 is an intensity modulator, or is composed of a polarization modulator, a polarization controller and a polarizer to realize intensity modulation; the bandwidth of the modulator 40GHz.

[0023] A semiconductor optical amplifier 12, the input end of which is connected to the output end of the modulator 11, said semiconductor optical amplifier 12 has a nonlinear effect to generate four-wave mixing mode numbers to generate narrow optical pulses;

[0024] A coupler 13, its input end is connected with the output end of semiconductor optical amplifier 12, and its first output end is connected with an optical sampling oscilloscope 14;

[0025] A photodetector 15, the in...

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Abstract

An optoelectronic oscillator based optical pulse generation device comprises a laser, a modulator, a semiconductor optical amplifier, a coupler, a photoelectric detector, an electric filter and an electric amplifier. The input end of the modulator is connected with the output end of the laser. The input end of the semiconductor optical amplifier is connected with the output end of the modulator. The input end of the coupler is connected with the output end of the semiconductor optical amplifier, and the first output end is connected with a light sampling oscilloscope or an auto-correlator. The input end of the photoelectric detector is connected with the second output end of the coupler. The input end of the electric filter is connected with the output end of the photoelectric detector. The input end of the electric amplifier is connected with the output end of the electric filter, and the output end is connected with a radio frequency modulation port of the modulator. By means of the device, the produced optical pulse width can be changed, and the optical pulse repetition rate can be changed by tuning central frequencies of the filter.

Description

technical field [0001] The invention relates to the fields of microwave photonics and optical signal processing, in particular to an optical pulse generating device based on a photoelectric oscillator. Background technique [0002] High repetition rate optical pulses are widely used in various fields, such as high-speed data transmission, high-speed optical signal processing sampler, all-optical shaping and other optical communication systems. Because of the wide application of optical pulses, many researchers have used many different devices to generate optical pulses, such as electro-absorption modulators, highly nonlinear optical fibers, ultra-long semiconductor optical amplifiers, and cascaded electro-optic modulators. [0003] Optical pulses can be obtained through Q-switching technology, mode-locking technology, etc. The pulse width generated by the Q-switching technology is on the order of ns, while the pulse width generated by the mode-locking technology can reach t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/11
Inventor 李明黄宁博邓晔祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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