Simultaneous multichannel carrier-suppressed return-to-zero to non-return-to-zero format conversion using a fiber Bragg grating

Cao, Hui; Atai, Javid; Zuo, Jun; Yu, Yu; Gbadebo, Adenowo; Xiong, Bangyun; Hou, Jie; Liang, Peiying; Gao, Peiying and Shu, Xuewen (2015). Simultaneous multichannel carrier-suppressed return-to-zero to non-return-to-zero format conversion using a fiber Bragg grating. Applied Optics, 54 (20), pp. 6344-6350.

Abstract

A novel multichannel carrier-suppressed return-to-zero (CSRZ) to non-return-to-zero (NRZ) format conversion scheme based on a single custom-designed fiber Bragg grating (FBG) with comb spectra is proposed. The spectral response of each channel is designed according to the algebraic difference between the CSRZ and NRZ spectra outlines. The tailored group delays are introduced to minimize the maximum refractive index modulation. Numerical results show that four-channel 200-GHz-spaced CSRZ signals at 40 Gbits/s can be converted into NRZ signals with high Q-factor and wide-range robustness. It is shown that our proposed FBG is robust to deviations of bandwidth and central wavelength detuning. Another important merit of this scheme is that the pattern effects are efficiently reduced owing to the well-designed spectra response.

Publication DOI: https://doi.org/10.1364/AO.54.006344
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
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Uncontrolled Keywords: all-optical devices,fiber Bragg gratings,frequency filtering,Atomic and Molecular Physics, and Optics
Published Date: 2015-07-09

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