RZ-OOK to NRZ-OOK format conversion based on a single fiber Bragg grating
We propose a return-to-zero on-off keying (RZ-OOK) to non-return-to-zero (NRZ) OOK conversion scheme based on a single custom-designed fiber Bragg grating (FBG). The custom-made FBG is designed and syn-thesized using discrete layer-peeling algorithm. It is shown that such a FBG can replace the combination of interferometer and the cascaded filter that are invariably employed together in the reported schemes for -RZ-OOK to NRZ-OOK format conversion. Simulation results show that the input 20-Gb/s RZ-OOK signals with different duty cycles can be converted into NRZ-OOK signals with high Q-factor.
Xuewen Shu：Wuhan National Laboratory for Optoelectronics and School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Javid Atai：School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Qian Dong：School of Electronics and Information Engineering, Foshan University, Foshan 528000, China
Jun Zuo：School of Electronics and Information Engineering, Foshan University, Foshan 528000, China
GuoJie Chen：School of Electronics and Information Engineering, Foshan University, Foshan 528000, China
Yu Yu：Wuhan National Laboratory for Optoelectronics and School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
备注：This work was supported by the National Natural Science Foundation of China (No. 61178030), the Natural Science Foundation of Guangdong Province, China (No. S201101000122), the Fundamental Research Funds for the Central Universities, China (No. HUST2013TS047), and the Fundamental Research Funds of Foshan University.
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Hui Cao, Xuewen Shu, Javid Atai, Qian Dong, Jun Zuo, GuoJie Chen, Yu Yu, "RZ-OOK to NRZ-OOK format conversion based on a single fiber Bragg grating," Chinese Optics Letters 12(9), 090603 (2014)
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