Abstract

We propose a scheme to achieve regenerative format conversion from a distorted non-return-to-zero-on–off-keying (NRZ-OOK) signal to a return-to-zero-binary-phase-shift-keying (RZ-BPSK) signal of high quality in an integrated device. This proposal is achieved by employing an interferometer on a silicon chip with a coupled ring resonator optical waveguide embedded in one arm. In this scheme the amplified NRZ-OOK signal is injected into the converter together with a locally generated return-to-zero (RZ) pulse train at a different wavelength. Owing to the linear and nonlinear effects in the silicon waveguides, the RZ pulse train changes to a clean RZ-BPSK signal after it is cross modulated by the NRZ-OOK signal. To verify the feasibility of our scheme, we simulate the conversion at $10\mathrm{Gbits}∕\mathrm{s}$.

© 2008 Optical Society of America

All-optical regenerative NRZ-to-RZ format conversion using coupled ring-resonator optical waveguide

Tong Ye, Cishuo Yan, Yuanyuan Lu, Fangfei Liu, and Yikai Su
Opt. Express 16(20) 15325-15331 (2008)

All-optical modulation format conversion from NRZ-OOK to RZ-QPSK using parallel SOA-MZI OOK/BPSK converters

Ken Mishina, Suresh M. Nissanka, Akihiro Maruta, Shunsuke Mitani, Kazuyuki Ishida, Katsuhiro Shimizu, Tatsuo Hatta, and Ken-ichi Kitayama
Opt. Express 15(12) 7774-7785 (2007)

All-optical format conversions from NRZ to BPSK and QPSK based on nonlinear responses in silicon microring resonators

Yuanyuan Lu, Fangfei Liu, Min Qiu, and Yikai Su
Opt. Express 15(21) 14275-14282 (2007)

Polarization-insensitive, 40 Gb/s wavelength and RZ-OOK-to-RZ-BPSK modulation format conversion by XPM in a highly nonlinear PCF

W. Astar, C.-C. Wei, Y.-J. Chen, J. Chen, and G. M. Carter
Opt. Express 16(16) 12039-12049 (2008)

Simultaneous RZ-OOK to NRZ-OOK and RZ-DPSK to NRZ-DPSK format conversion in a silicon microring resonator

Meng Xiong, Oskars Ozolins, Yunhong Ding, Bo Huang, Yi An, Haiyan Ou, Christophe Peucheret, and Xinliang Zhang
Opt. Express 20(25) 27263-27272 (2012)