共查询到20条相似文献,搜索用时 15 毫秒
1.
M. Y. Frankel 《Optical and Quantum Electronics》1996,28(7):783-800
Recent advances in state-of-the-art optoelectronic techniques are presented for small-signal electronic device network analysis. The impetus for optoelectronic approaches is given by the severely inadequate bandwidth coverage of existing measurement techniques. Based on a comparison of the trade-offs offered by various optoelectronic techniques, external electrooptic sampling was chosen. Then, the three basic building blocks of an electrooptic characterization system are discussed, which cover the areas of wide-band signal measurement, generation and transmission. The building blocks are subsequently integrated into a complete electrooptic network analyser system capable of active device characterization over a 100 GHz bandwidth. These capabilities are demonstrated on a heterojunction field-effect transistor with a directly-measured maximum frequency of oscillation of 94 GHz. Then, the performance of the electrooptic network analyser is optimized by minimizing transmission line losses, and by improving signal generation and measurement geometries. The resulting system exhibits an unprecedented single-measurement bandwidth of 700 GHz on passive structures. The system performance is verified by comparing measured results with simple models of the measured passive structures. 相似文献
2.
A. Gholami Z. Toffano A. Destrez M. Pez F. Quentel 《Optical and Quantum Electronics》2006,38(4-6):479-493
High-speed Optoelectronic Modules using Vertical Cavity Surface Emitting Lasers (VCSEL) coupled to Multi Mode Fibers (MMF)
are a performing and low-cost solution for 10 Gigabit Ethernet (10 GbE) in short-distance optical links. A complete model
of the spatiotemporal behavior of multimode VCSELs, through static and dynamic response, noise, thermal effects, and its coupling
to MMF has been investigated. Relative Intensity Noise shows modal dependence and can be affected by spatial filtering due
to coupling and fiber propagation. Simulations permit to evaluate critical parameters, such as modulation formats, launching
conditions, and operating temperature for global bandwidth and eye diagram optimization up to 10 Gb/s. Simulation results
are compared to measurements on prototype optoelectronic modules. 相似文献
3.
人工神经网络的光学实现 总被引:3,自引:0,他引:3
本文讨论了光学神经网络的优势及其所面临的主要问题,简述了它近十年来的发展.光互连是光学实现神经网络最具吸引力的技术,光电混合集成的灵巧象素器件又融合了电子器件灵活、可编程、易控制的特点.二者的结合是当前光学神经网络发展的主要趋势,它们为神经网络的进一步发展和应用,为超大规模神经网络的实现和应用提供了一种很有前途的方案. 相似文献
4.
An optical implementation of CMOS/SEED optoelectronic integrated crossbar interconnection network is reported. The CMOS/SEED smart pixel arrays with O/E light windows are used as logical controlling switch nodes. High/lower modulating ratio of the output light density is about 1.4. The light beam is supplied by a 0.85 μm semiconductor laser diode. 8×2 spot arrays formed by a computer-generated phase grating are used as the pumping light beams for CMOS/SEED light modulators. High-precision 2-D optical fiber bundle arrays are used as the I/O access devices. 16×16 optical crossbar interconnection network is realized using our experimental setup. It is easy to couple with CMOS/SEED smart pixel arrays by using 2-D optical fiber bundle arrays as the I/O access devices. Compact in comparison with other optical interconnection systems. 相似文献
5.
1 Introduction As“wireinterconnection”ofelectroniccomputerhassomeshortagessuchasbottleneck,clockskew,RCconstant,limitedtimespaceproduct,crosstalk,itisdifficulttofurtherimprovetheperformanceofelectronicinterconnectionnetwork.Aslightwavehasthefeature… 相似文献
6.
可见光通信作为新一代信息技术,除了为移动通信拓展频谱资源外,还具备高速、大容量、安全、节能的技术特点。现有射频通信的5G、6G技术方案能耗很高,而照明、显示用的LED已经无处不在,所以可见光通信将来可用于实现普适的万物光互连。商用照明的荧光型 LED器件的带宽有限,通过均衡技术已经把可见光通信系统的3 dB带宽拓展到了600 MHz,单路二进制开关键控实时通信速率达到了1.39 Gbps。如果采用高阶调制和波分复用技术,多色LED光源的非实时通信总速率已经超过15 Gbps。灯光上网、灯光定位和智能家居系统等创新应用证明了可见光通信与照明或显示融合不是梦,预示看得见的光无线通信将引起更大的技术变革。 相似文献
7.
Sung-June Kim Dae-Keun Kim Dong-Won Shin Chang-Oh Jeong 《Optical and Quantum Electronics》1995,27(5):511-518
As the level of integration and the power of computation increase, methods of interconnecting computational elements attract more attention and the total system performance is bottlenecked by the problems associated with electrical interconnections. Optical interconnections have advantages of practically unlimited bandwidth and absence of crosstalk. To utilize such merits of optical interconnections, a large number of low-cost high-performance optoelectronic integrated circuits (OEICs) are needed. This paper focuses on monolithically integrated receiver OEICs that consist of InP/InGaAs p-i-n photodiodes and fully ion-implanted InP junction field-effect transistors (JFETs). In the formation of shallow InP p-n junctions we use a co-implantation technique in which we implant a group V element together with Be, a dopant, and take advantage of damage and stoichiometry effects. We fabricate a p-i-n/JFET amplifier receiver front-end circuit and a receiver 2×2 crosspoint switch circuit using this technique. We also develop bandwidth enhancement designs using inductive peaking and cascoding. Finally, we demonstrate a single-channel, free-space optical interconnection system with a bandwidth of 1.5 GHz and an interconnection length of 50 cm. 相似文献
8.
Osamu Wada 《Optical and Quantum Electronics》1988,20(6):441-474
Optoelectronic integrated circuits (OEICs) in which both optoelectronic and electronic devices are monolithically integrated can exhibit various advantages in improving performance, functionality and reliability. This review concerns the development of OEICs based on GaAs systems. The requirements of integration include the development of devices having high performance and structures suitable for integration, and fabrication techniques for planar, process-compatible integrated structures. Superior devices such as low-threshold-current quantum-well (QW) lasers, planar-structure metal-semiconductor-metal (MSM) photodiodes and the planar integration process have been developed, and these have been used to fabricate multichannel transmit- and receive-OEICs operating at gigabit rates. The applications of such OEICs have been demonstrated in high-speed optical links and 4×4 optical switches. The technological areas expected to be developed further are discussed in view of the future widespread applications of OEICs to communication and signal-processing systems. 相似文献
9.
Alignment-free optical modules using solder-bump-bonding technique for free-space optical interconnections 总被引:1,自引:0,他引:1
We propose alignment-free optical modules using a solder-bump-bonding technique for constructing free-space optical interconnection
systems without a special alignment procedure. Bonding pads for mounting an optoelectronic device chip are fabricated by exposing
a photosensitive resin film to light traveling through the optical system of the module so that the image positions of the
bonding pads on both image planes of the optical interconnection system are aligned with each other. A device chip is mounted
by solder-bump bonding and is set at a proper position by the surface tension of molten solder. The effectiveness of the technique
is verified by constructing alignment-free optical modules. 相似文献
10.
全混洗交换Omega互连网络的光学实现 总被引:10,自引:6,他引:4
本文提出了一种由左、右全混洗和空间光开关列阵组成的等效Omega网络;成功地设计了一种实现全混洗互连的低损耗,等程的光学组合棱镜.由两块光学组合棱镜和空间光开关列阵组合成的光学系统实现了全混洗交换光学互连网络,该光学互连网络已在实验中得到了证实. 相似文献
11.
Reversible logic is emerging as a promising alternative for applications in low-power design and quantum computation in recent years due to its ability to reduce power dissipation, which is an important research area in low power VLSI and ULSI designs. Many important contributions have been made in the literatures towards the reversible implementations of arithmetic and logical structures; however, there have not been many efforts directed towards efficient approaches for designing reversible Arithmetic Logic Unit (ALU). In this study, three efficient approaches are presented and their implementations in the design of reversible ALUs are demonstrated. Three new designs of reversible one-digit arithmetic logic unit for quantum arithmetic has been presented in this article. This paper provides explicit construction of reversible ALU effecting basic arithmetic operations with respect to the minimization of cost metrics. The architectures of the designs have been proposed in which each block is realized using elementary quantum logic gates. Then, reversible implementations of the proposed designs are analyzed and evaluated. The results demonstrate that the proposed designs are cost-effective compared with the existing counterparts. All the scales are in the NANO-metric area. 相似文献
12.
光电探测器是一类用于接收光波并转变为电信号的专门器件,文章描述了PIN光电二极`管雪崩光电二极管、MSM(金属-半导体-金属)光电二极管的器件结构和工作原理,并对它们的响应度、噪声、带宽等特性进行了讨论,这类器件已在光通信、光信息处理等许多系统中得到广泛的应用。 相似文献
13.
We propose a novel scheme for interconnection of multiple high-speed (2.5 10 Gbit s) asynchronous transfer mode (ATM) streams through an optical wavelength division multiplexing (WDM) network with a total network capacity of up to 4 Tbit/s. The proposed architecture is based on placing the optical WDM portion of the network in a physically small area, i.e., one central office or in a single rack. This helps to avoid technological obstacles such as power budget, dispersion, and synchronization limitations as well as optical output buffering. The interconnection is an ATM packet switched network and provides optical contention resolution. We show that the implementation of such a network is possible using currently available optoelectronic technology. An optional extension of the network is proposed by a combination of WDM and space division multiplexing (SDM) technology. Simulation results are presented, indicating network throughput of up to 100 %. 相似文献
14.
We propose a novel scheme for interconnection of multiple high-speed (2.5 10 Gbit s) asynchronous transfer mode (ATM) streams through an optical wavelength division multiplexing (WDM) network with a total network capacity of up to 4 Tbit/s. The proposed architecture is based on placing the optical WDM portion of the network in a physically small area, i.e., one central office or in a single rack. This helps to avoid technological obstacles such as power budget, dispersion, and synchronization limitations as well as optical output buffering. The interconnection is an ATM packet switched network and provides optical contention resolution. We show that the implementation of such a network is possible using currently available optoelectronic technology. An optional extension of the network is proposed by a combination of WDM and space division multiplexing (SDM) technology. Simulation results are presented, indicating network throughput of up to 100 %. 相似文献
15.
Alfredo Martin-Minguez Author Vitae Paloma R. Horche Author Vitae 《Optics Communications》2011,284(21):5055-5061
In this paper a design for an equalized holographic ROADM (Reconfigurable Optical Add-Drop Multiplexer) is done. This device can address several wavelengths at the input to different output fibers, according to the holograms stored in a SLM (Spatial Light Modulator), where all the outputs are equalized in power. All combinations of the input wavelengths are possible at the different output fibers.These type of ROADMs are designed for application in CWDM (Coarse Wavelength Division Multiplexing) networks, where the distance between the different wavelength allow the use of DML (Direct Modulation Lasers) without cooling, reducing the cost and the tolerances of the network components. Application in METRO networks and its interconnection with some PON (Passive Optical Network), as a part of the access to the subscriber, is reviewed. 相似文献
16.
As the feature size of the CMOS integrated circuit continues to shrink, the more and more serious scattering effect has a serious impact on interconnection performance, such as delay and bandwidth. Based on the impact of the scattering effect on latency and bandwidth, this paper first presents the quality-factor model which optimises latency and bandwidth effectively with the consideration of the scattering effect. Then we obtain the analytical model of line width and spacing with application of curve-fitting method. The proposed model has been verified and compared based on the nano-scale CMOS technology. This optimisation model algorithm is simple and can be applied to the interconnection system optimal design of nano-scale integrated circuits. 相似文献
17.
Optoelectronic components and subsystems such as optically controlled phased array antennas, distributed radar networks, interferometric optical fiber hydrophones, and high-speed optoelectronic chips demand highaccuracy optical time delay measurement with large measurement range and the capability for single-end and wavelength-dependent measurement. In this paper, the recent advances in the optical time delay measurement of a fiber link with high accuracy are reviewed. The general models of the typical time delay measurement technologies are established with the operational principle analyzed. The performance of these techniques is also discussed. 相似文献
18.
With the need of the internet of things,big data,and artificial intelligence,creating new computing architecture is greatly desired for handling data-intensive tasks.Human brain can simultaneously process and store information,which would reduce the power consumption while improve the efficiency of computing.Therefore,the development of brainlike intelligent device and the construction of brain-like computation are important breakthroughs in the field of artificial intelligence.Memristor,as the fourth fundamental circuit element,is an ideal synaptic simulator due to its integration of storage and processing characteristics,and very similar activities and the working mechanism to synapses among neurons which are the most numerous components of the brains.In particular,memristive synaptic devices with optoelectronic responding capability have the benefits of storing and processing transmitted optical signals with wide bandwidth,ultrafast data operation speed,low power consumption,and low cross-talk,which is important for building efficient brain-like computing networks.Herein,we review recent progresses in optoelectronic memristor for neuromorphic computing,including the optoelectronic memristive materials,working principles,applications,as well as the current challenges and the future development of the optoelectronic memristor. 相似文献
19.