Generation of a 640 Gbit/s NRZ OTDM signal using a silicon microring resonator

Ding, Yunhong, Hu, Hao, Galili, Michael, Xu, Jing, Liu, Liu, Pu, Minhao, Mulvad, Hans Christian Hansen, Oxenløwe, Leif Katsuo, Peucheret, Christophe, Jeppesen, Palle, Zhang, Xinliang, Huang, Dexiu and Ou, Haiyan (2011) Generation of a 640 Gbit/s NRZ OTDM signal using a silicon microring resonator. Optics Express, 19 (7), 6471. (doi:10.1364/oe.19.006471).

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 −30dBm 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.

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Contributors

Author: Hans Christian Hansen Mulvad

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