Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62415
Title: On-chip integratable all-optical quantizer using strong cross-phase modulation in a silicon-organic hybrid slot waveguide
Authors: Kang, Z
Yuan, J
Zhang, X
Sang, X
Wang, K
Wu, Q
Yan, B
Li, F
Zhou, X
Zhong, K
Zhou, G
Yu, C
Farrell, G
Lu, C 
Tam, HY 
Wai, PKA 
Issue Date: 2016
Publisher: Nature Publishing Group
Source: Scientific reports, 2016, v. 6, 19528 How to cite?
Journal: Scientific reports 
Abstract: High performance all-optical quantizer based on silicon waveguide is believed to have significant applications in photonic integratable optical communication links, optical interconnection networks, and real-time signal processing systems. In this paper, we propose an integratable all-optical quantizer for on-chip and low power consumption all-optical analog-to-digital converters. The quantization is realized by the strong cross-phase modulation and interference in a silicon-organic hybrid (SOH) slot waveguide based Mach-Zehnder interferometer. By carefully designing the dimension of the SOH waveguide, large nonlinear coefficients up to 16,000 and 18,069 W-1/m for the pump and probe signals can be obtained respectively, along with a low pulse walk-off parameter of 66.7 fs/mm, and all-normal dispersion in the wavelength regime considered. Simulation results show that the phase shift of the probe signal can reach 8p at a low pump pulse peak power of 206 mW and propagation length of 5 mm such that a 4-bit all-optical quantizer can be realized. The corresponding signal-to-noise ratio is 23.42 dB and effective number of bit is 3.89-bit.
URI: http://hdl.handle.net/10397/62415
EISSN: 2045-2322
DOI: 10.1038/srep19528
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