A Photonic-Assisted Triangular-Shaped Pulses Generator Based on Optical Carrier Brillouin Processing

LIU Xinkai; PAN Wei; ZOU Xihua; YAN Lianshan; LUO Bin

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A Photonic-Assisted Triangular-Shaped Pulses Generator Based on Optical Carrier Brillouin Processing

LIU Xinkai #,PAN Wei,ZOU Xihua *,YAN Lianshan,LUO Bin

School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031

*Correspondence author

#Submitted by

Subject:

Funding: Specialized Research Fund for the Doctoral Program of Higher Education of China （No.20100184120007, 20110184130003）

Opened online:14 February 2014

Accepted by: none

Citation: LIU Xinkai,PAN Wei,ZOU Xihua.A Photonic-Assisted Triangular-Shaped Pulses Generator Based on Optical Carrier Brillouin Processing[OL]. [14 February 2014] http://en.paper.edu.cn/en_releasepaper/content/4584118

A photonic approach for generation of triangular-shaped pulses based on optical carrier Brillouin processing is proposed and experimentally demonstrated. In the proposed approach, A Mach-Zehnder modulator (MZM) biased at the minimum-transmission-point (MITP) is used to generate an optical modulated signal with only the odd-order sidebands. And then the amplification gain provided by stimulated Brillouin scatter (SBS) is adopted to recover the suppressed carrier. Meanwhile, the negative-order sidebands of the optical modulated signal are removed by an optical bandpass filter (OBPF). By appropriately setting the modulation index, the amplitude of the 1st-order harmonic can equal to 9 times of that of the 3rd-order harmonic. In this way, triangular-shaped pulses can be obtained. In the experiment, a triangular-shaped pulse with a tunable repetition rate of 8 GHz is generated.

Keywords:Microwave photonics; Stimulated Brillouin scatter (SBS); triangular-shaped pulse.

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