All-optical quantization scheme by slicing the supercontinuum in a chalcogenide horizontal slot waveguide. (August 2015)

• Record Type: Journal Article
• Authors: Kang, Shuai; Yuan, Jinhui; Kang, Zhe; Zhang, Xianting; Kang, Xue; Guo, Zheng; Li, Feng; Yan, Binbin; Wang, Kuiru; Sang, Xinzhu; Yu, Chongxiu
• Is Part Of: Journal of optics. Volume 17:Number 8(2015:Aug.)
• Page Start: 539
• Page End: 550
• Publication Date: 2015-08
• Subjects: Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/8/085502
• Languages: English
• ISSNs: 2040-8978

Abstract

<abstract> <title>Abstract</title> <p>In this paper, we propose an integratable spectral quantization scheme for all-optical analog-to-digital conversion (AOADC) by slicing the supercontinuum, which is generated in a chalcogenide (As₂S₃) horizontal slot waveguide. The numerical simulation results show that a 4-bit quantization resolution is successfully achieved along with a signal-to-noise ratio of 23.96 dB and an effective number of bit (ENOB) of 3.98 bit. The required As₂S₃ waveguide length and input peak power are only 1.5 cm and 900 mW, respectively, owing to the high nonlinear coefficient of 115.8 W⁻¹/m. It is believed that this proposed scheme can find important applications in the photonic integratable AOADC with low power consumption.</p> </abstract>