All-Optical NRZ-to-RZ Data Format Conversion with Picosecond Duration-Tunable and Pedestal Suppressed Operations
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概要
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We demonstrate an all-optical picosecond pulse duration-tunable nonreturn-to-zero (NRZ)-to-return-to-zero (RZ) data format conversion using a Raman amplifier-based compressor and a fiber-based four-wave mixing (FWM) switch. A NRZ data signal is injected into the fiber-based FWM switch (AND gate) with a compressed RZ clock by the Raman amplifier-based compressor, and convert to RZ data signal by the fiber-based FWM switch. The compressed RZ clock train acts as a pump signal in the fiber-based FWM switch to perform the NRZ-to-RZ data format conversion. By changing the Raman pump power of the Raman amplifier-based compressor, it is possible to tune the pulse duration of the converted RZ data signal from 15ps to 2ps. In all the tuning range, the receiver sensitivity at bit error rate (BER) of 10-9 for the converted RZ data signal was about 1.3∼1.7dB better than the receiver sensitivity of the input NRZ data signal. Moreover, the pulse pedestal of the converted RZ data signals is well suppressed owing to the FWM process in the fiber-based FWM switch.
- 2011-07-01
著者
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Kishi Naoto
Department Of Electronic Engineering The University Of Electro-communications
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Hung Nguyen
Department Of Communication Engineering And Informatics University Of Electro-communications
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QUANG NGUYEN-THE
Department of Communication Engineering and Informatics, University of Electro-Communications
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MATSUURA Motoharu
The Center for Frontier Science and Engineering, University of Electro-Communications
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Matsuura Motoharu
The Center For Frontier Science And Engineering University Of Electro-communications
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Quang Nguyen-the
Department Of Communication Engineering And Informatics University Of Electro-communications
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Kishi Naoto
Department Of Communication Engineering And Informatics University Of Electro-communications
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