title: Generation of a 640 Gbit/s NRZ OTDM signal using a silicon microring resonator.
abstract: A 640 Gbit/s NRZ OTDM signal has been successfully generated for the first time by format conversion of a 640 Gbit/s OTDM signal from RZ to NRZ. First, a coherent 640 Gbit/s OTDM RZ signal is generated by wavelength conversion of the original incoherent OTDM signal utilizing Kerr switching in a highly nonlinear fiber. Second, RZ-to-NRZ format conversion is achieved in a specially designed silicon microring resonator with FSR of 1280 GHz, Q value of 638, high extinction ratio and low coupling loss to optical fiber. A 640 Gbit/s NRZ OTDM signal with very clear eye-diagram and narrower bandwidth than both the original incoherent 640 Gbit/s and the wavelength converted coherent 640 Gbit/s RZ OTDM signals has been obtained. Bit error ratio measurements show error free (<10(-9)) performance at a received power of -30 dBm for all the OTDM channels of the 640 Gbit/s NRZ signal, with very low power penalty (<0.5 dB) and improved dispersion tolerance compared to the wavelength converted RZ case.
authors: Wuhan National Laboratory for Optoelectronics, School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China.
authors: Yunhong
authors: Y
authors: Ding
authors: Hao
authors: H
authors: Hu
authors: Michael
authors: M
authors: Galili
authors: Jing
authors: J
authors: Xu
authors: Liu
authors: L
authors: Liu
authors: Minhao
authors: M
authors: Pu
authors: Hans Christian Hansen
authors: HC
authors: Mulvad
authors: Leif Katsuo
authors: LK
authors: Oxenløwe
authors: Christophe
authors: C
authors: Peucheret
authors: Palle
authors: P
authors: Jeppesen
authors: Xinliang
authors: X
authors: Zhang
authors: Dexiu
authors: D
authors: Huang
authors: Haiyan
authors: H
authors: Ou
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008872:Microwaves; D008904:Miniaturization; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012825:Silicon / Q000737:chemistry*; D014159:Transducers
chemical_list: D012825:Silicon