Frequency multiplication of microwave photonic signal based on biased Mach-Zehnder modulator

Long Jie; Li Zhengyong; Ye Zhuxiong; Yang Chengwu; Li Xiaomeng; Liu Jia; Wu Chongqing

High -speed photonic signal source is absolute necessity for modern optical communications, which attracts more and more attention at present. By using a biased Mach-Zehnder modulator (MZM), a simple scheme based on frequency multiplication was presented and experimentally investigated for generation of high-speed microwave photonic signal. The phase difference of two beams in the MZM was adjusted by a DC bias applied on the MZM, which caused pulse splitting and frequency multiplication. In the experiment, a 5 -GHz RF signal source successfully generated double -frequency microwave optical signal (10-GHz) with great quality. It was also observed that different biased voltage would produce different pulse train, while the optimal bias was required for high -quality frequency multiplication. This scheme is available to generate high-frequency optical pulses over 40 GHz, which is promising to be widely used in microwave photonic communication.

1. Key Laboratory of Luminescence and Optical Information of Ministry of Education,Beijing Jiaotong University,Beijing 100044,China

Received Date: 2014-04-21

Rev Recd Date: 2014-05-23

Publish Date: 2014-12-25

Key words:

Abstract: High -speed photonic signal source is absolute necessity for modern optical communications, which attracts more and more attention at present. By using a biased Mach-Zehnder modulator (MZM), a simple scheme based on frequency multiplication was presented and experimentally investigated for generation of high-speed microwave photonic signal. The phase difference of two beams in the MZM was adjusted by a DC bias applied on the MZM, which caused pulse splitting and frequency multiplication. In the experiment, a 5 -GHz RF signal source successfully generated double -frequency microwave optical signal (10-GHz) with great quality. It was also observed that different biased voltage would produce different pulse train, while the optimal bias was required for high -quality frequency multiplication. This scheme is available to generate high-frequency optical pulses over 40 GHz, which is promising to be widely used in microwave photonic communication.

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Reference (27)

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Frequency multiplication of microwave photonic signal based on biased Mach-Zehnder modulator

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