H Haoshuo Chen

Bio: H Haoshuo Chen is an academic researcher. The author has contributed to research in topics: Multi-mode optical fiber & Optical communication. The author has an hindex of 1, co-authored 1 publications receiving 3 citations.

Optical devices and subsystems for few- and multi-mode fiber based networks

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Fundamentals of optical waveguides

Abstract: Preface 1. Wave Theory of Optical Waveguides 2. Planar Optical Waveguides 3. Optical Fibers 4. Couple Mode Theory 5. Nonlinear Optical Effects in Optical Fibers 6. Finite Element Method 7. Beam Propagation Method 8. Staircase Concatention Method 9. Planar Lightwave Circuits 10. Theorems and Formulas Appendix

High-speed multi-mode fiber transmission by using mode-field matched center-launching technique

Abstract: We report that the center-launching technique can be improved to selectively excite the fundamental mode of multimode fiber (MMF). This ldquomode-field matchedrdquo center-launching technique enables us to excite only the fundamental mode in the MMF and, consequently, avoid the inherent limitations imposed by the differential mode delay. We realize this mode-field matched center-launching technique simply by fusion-splicing a single-mode fiber (SMF) pigtailed transmitter to the MMF. The splicing condition is optimized to expand the core of SMF slightly so that it can match the mode field distribution of the fundamental mode of MMF. The results show that, by using this launching technique, we can achieve the transmission characteristics similar to SMF and drastically increase the bandwidth-distance product of MMF. For demonstrations, we have successfully transmitted 10- and 40-Gb/s signals over 12.2 and 3.7 km of MMF, respectively, without using any dispersion compensation techniques. We have also evaluated the robustness of the MMF link implemented by using the proposed launching technique against the mechanical perturbations such as the lateral offset between fiber connectors, fiber bending, and fiber shaking.

New Method For Modeling and Design Optical SDM Transmission System Using Long Haul FMF with PDM/DWDM Techniques Enabling QPSK Modulation Format

Abstract: 1241 New Method For Modeling and Design Optical SDM Transmission System Using Long Haul FMF with PDM/DWDM Techniques Enabling QPSK Modulation Format Ibrahim Abdullah Musaddak Maher Department of electrical engineering, University of Babylon dr.ibrahim_ba@yahoo.com, www.theboss1@yahoo.com Abstract: This paper presents the modeling and design of ultra high capacity Space Division Multiplexing (SDM) transmission system. Polarization Division Multiplexing (PDM) and Dense Wavelength Division Multiplexing (DWDM) techniques are also proposed in this system to increase total system data rate. For the ultra-high capacity need of SDM, Few Mode Fiber (FMF) was proposed as SDM best technology for obtaining ultra-high bit rates with long haul transmission. The description and design of 8-DWDM channels over 7 modes SDM/PDM system was explored as future of ultra-high capacity optical network. A long-haul transmission of 1080 Km recorded for 8-WDM channels-7modes-SDM/PDM system by using QPSK modulation format. The total bit rate achieved by our designed system is 4.48 Tb/s at 40Gb/s. Channel estimation techniques were proposed to enable the transmitter pre-shaping design for the linear effects mitigation by using different DSP algorithms. The presence of linear and nonlinear losses limits the acceptable range of input power that produce the required BER for our proposed system from -4dBm to 4dBm.