title: Simultaneous multichannel carrier-suppressed return-to-zero to non-return-to-zero format conversion using a fiber Bragg grating.
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.
authors.forename: Hui
authors.initials: H
authors.lastname: Cao
authors.forename: Javid
authors.initials: J
authors.lastname: Atai
authors.forename: Jun
authors.initials: J
authors.lastname: Zuo
authors.forename: Yu
authors.initials: Y
authors.lastname: Yu
authors.forename: Adenowo
authors.initials: A
authors.lastname: Gbadebo
authors.forename: Bangyun
authors.initials: B
authors.lastname: Xiong
authors.forename: Jie
authors.initials: J
authors.lastname: Hou
authors.forename: Peiying
authors.initials: P
authors.lastname: Liang
authors.forename: Yao
authors.initials: Y
authors.lastname: Gao
authors.forename: Xuewen
authors.initials: X
authors.lastname: Shu