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Your search keyword '"Li, Yunbo"' showing total 4 results
Start Over Author "Li, Yunbo" Journal optics communications
4 results on '"Li, Yunbo"'

2. Demonstration of an 8×25-Gb/s optical time-division multiplexing system

Author

Wang Lei, Xiangyu Jiang, Caiyun Lou, Li Huo, Dong Wang, Xin Chen, Li Yunbo, and Li Han

Subjects
Physics, Demultiplexer, Pulse (signal processing), business.industry, 02 engineering and technology, Optical performance monitoring, 01 natural sciences, Pulse shaping, Signal, Multiplexing, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, 010309 optics, 020210 optoelectronics & photonics, Optics, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Bit error rate, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, Optical add-drop multiplexer
Abstract

An 8 × 25 -Gb/s optical time-division multiplexing (OTDM) system is demonstrated experimentally. The optical pulse source is based on optical frequency comb (OFC) generation and pulse shaping, which can generate nearly chirp-free 25-GHz 1.6-ps optical Gaussian pulse. The eightfold optical time-division demultiplexer consists of a single-driven dual-parallel Mach–Zehnder modulator (DPMZM) and a Mamyshev reshaper. Error-free demultiplexing of 8 × 25 -Gb/s back-to-back (B2B) signal with a power penalty of 4.1 dB to 4.4 dB at a bit error rate (BER) of 1 0 − 9 is achieved to confirm the performance of the proposed system.

Published
2017

4. Optimization of phase objects in 4f coherent imaging system for nonlinear refraction measurements

Author

Li, Yunbo, Zhang, Xueru, Wang, Yuxiao, Yang, Kun, and Song, Yinglin

Subjects
*PHASE shift (Nuclear physics), *OPTICS, *OPTOELECTRONIC devices, *SCATTERING (Physics)
Abstract

Abstract: We numerically analyze the effects of radius and phase shift of phase objects on the diffraction image of the 4f coherent imaging system, a system used for measuring the third-order nonlinear refractive index. The selection of the aperture radius is discussed. We prove that when the phase object radius is 0.1 time of the aperture radius and the phase change of the phase object is 0.57π, one can get the highest sensitivity for nonlinear refraction measurement. [Copyright &y& Elsevier]

Published
2006
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