Author Affiliations
Abstract
1 Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
2 School of Microelectronics, Xidian University, Xi'an710071, China
3 School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China
4 Changzhou Campus of Hohai University, Changzhou 213022, China
Driven by continuous scaling of nanoscale semiconductor technologies, the past years have witnessed the progressive advancement of machine learning techniques and applications. Recently, dedicated machine learning accelerators, especially for neural networks, have attracted the research interests of computer architects and VLSI designers. State-of-the-art accelerators increase performance by deploying a huge amount of processing elements, however still face the issue of degraded resource utilization across hybrid and non-standard algorithmic kernels. In this work, we exploit the properties of important neural network kernels for both perception and control to propose a reconfigurable dataflow processor, which adjusts the patterns of data flowing, functionalities of processing elements and on-chip storages according to network kernels. In contrast to state-of-the-art fine-grained data flowing techniques, the proposed coarse-grained dataflow reconfiguration approach enables extensive sharing of computing and storage resources. Three hybrid networks for MobileNet, deep reinforcement learning and sequence classification are constructed and analyzed with customized instruction sets and toolchain. A test chip has been designed and fabricated under UMC 65 nm CMOS technology, with the measured power consumption of 7.51 mW under 100 MHz frequency on a die size of 1.8 × 1.8 mm2.
Journal of Semiconductors
2020, 41(2): 022401
作者单位
摘要
1 华中科技大学 光电子科学与工程学院, 武汉光电国家实验室, 湖北 武汉430074
2 武汉科技学院 电子信息工程学院, 湖北 武汉430073
随机激光辐射源自激活无序介质,通过辐射光在介质中的多次散射提供光学反馈,无需外加谐振腔。借助液晶的温度和电场依赖性,以液晶为无序介质的随机激光辐射能够呈现出有效的温度控制特性和电场控制特性,为随机激光器的实际应用开辟了新的方法和途径,具有巨大的应用前景。系统介绍了液晶随机激光辐射的基本原理、实现方法及实验结果,回顾了目前的研究现状,提出了以后可能的研究方向。
随机激光 液晶 多重散射 相干反馈 非相干反馈 
激光与光电子学进展
2008, 45(9): 16
Author Affiliations
Abstract
State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
Plasma enhanced chemical vapor deposition (PECVD) and electron cyclotron resonance (ECR) etching were used in the development of silica layers for planar waveguide applications. The addition of GeH4 to silica was used to control the refractive index of core layers with core-to-clad index differences in the range of 0.2%-1.3%. Refractive index uniformity variance of +-0.0003 was achieved after annealing for 4-inch Si <100> wafers. The core layers with thickness up to 6 μm were etched by ECR with optimized recipe and mask material. Low-loss silica-on-silicon waveguides whose propagation loss is approximately 0.07 dB/cm at 1550 nm are fabricated.
130.3130 integrated optics materials 230.7380 waveguides channeled 160.6030 silica 
Chinese Optics Letters
2005, 3(5): 05275

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