scholarly journals Sub-sampling generation of ultra-high baud rate PAM/QAM signals via high-order partial response narrowing

2021 ◽  
Author(s):  
Yixiao Zhu ◽  
Xiansong Fang ◽  
lei zhang ◽  
Fan Zhang ◽  
Weisheng Hu
Keyword(s):  
Partial Response ◽  
High Order ◽  
Baud Rate

scholarly journals Reduced complexity sequence detection for high-order partial response channels

2001 ◽  
Vol 19 (4) ◽  
pp. 649-661 ◽  
Author(s):  
M. Leung ◽  
B. Nikolic ◽  
Leo Ki-Chun Fu ◽  
Taehyun Jeon
Keyword(s):  
Partial Response ◽  
High Order ◽  
Sequence Detection ◽  
Partial Response Channels ◽  
Reduced Complexity

scholarly journals Experimental Investigation of 400 Gb/s Data Center Interconnect Using Unamplified High-Baud-Rate and High-Order QAM Single-Carrier Signal

2019 ◽  
Vol 9 (12) ◽  
pp. 2455 ◽  
Author(s):  
Yang Yue ◽  
Qiang Wang ◽  
Jon Anderson
Keyword(s):  
Experimental Investigation ◽  
Signal Processing ◽  
Form Factor ◽  
Data Center ◽  
Digital Signal ◽  
Single Mode ◽  
High Order ◽  
Baud Rate ◽  
Single Carrier ◽  
Fiber Link

In this article, we review the latest progress on data center interconnect (DCI). We then discuss different perspectives on the 400G pluggable module, including form factor, architecture, digital signal processing (DSP), and module power consumption, following 400G pluggable optics in DCI applications. Next, we experimentally investigate the capacity-reach matrix for high-baud-rate and high-order quadrature amplitude modulation (QAM) single-carrier signals in the unamplified single-mode optical fiber (SMF) link. We show that the 64 GBd 16-QAM, and 64-QAM signals can potentially enable 400 Gb/s and 600 Gb/s DCI application for 40 km and beyond of unamplified fiber link.

Determination of the Burgers vector of a dislocation in a Fe-Mn alloy by weak-beam image in HVEM

1978 ◽  
Vol 36 (1) ◽  
pp. 330-331
Author(s):  
Y. Ishida ◽  
H. Ishida ◽  
K. Kohra ◽  
H. Ichinose
Keyword(s):  
High Order ◽  
Simulation Technique ◽  
The Other ◽  
Image Simulation ◽  
Diffraction Vector ◽  
Burgers Vector ◽  
Weak Beam ◽  
Beam Image ◽  
Edge Component

IntroductionA simple and accurate technique to determine the Burgers vector of a dislocation has become feasible with the advent of HVEM. The conventional image vanishing technique(1) using Bragg conditions with the diffraction vector perpendicular to the Burgers vector suffers from various drawbacks; The dislocation image appears even when the g.b = 0 criterion is satisfied, if the edge component of the dislocation is large. On the other hand, the image disappears for certain high order diffractions even when g.b ≠ 0. Furthermore, the determination of the magnitude of the Burgers vector is not easy with the criterion. Recent image simulation technique is free from the ambiguities but require too many parameters for the computation. The weak-beam “fringe counting” technique investigated in the present study is immune from the problems. Even the magnitude of the Burgers vector is determined from the number of the terminating thickness fringes at the exit of the dislocation in wedge shaped foil surfaces.

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