Integrated Optics in a Standard MCM-D Motherboard Technology Demonstrated in O/E Measurement Probes

2003 ◽  
Author(s):  
H. De Pauw ◽  
J. De Baets ◽  
J. Vanfleteren ◽  
A. Van Calster
Keyword(s):  
High Precision ◽  
Optical Fibers ◽  
Data Transmission ◽  
Wet Etching ◽  
Minimal Distance ◽  
Optical Interconnections ◽  
Rf Amplifier ◽  
Passive Alignment ◽  
Transmission Speed ◽  
Low Refractive Index

An ongoing trend in packaging technology is the introduction of optical interconnections to cope with the problems of increased data transmission speed and the raised interconnection density. Hence, improving packaging and interconnection technologies is only viable if the aspects of optical interfaces and opto-electronic (O/E) components are considered. In this paper, we will demonstrate an MCM-D technology with O/E features. We achieved to integrate high-precision V-grooves for alignment and fixation of the optical fibers into a standard MCM-D technology. The V-groove shape of the fiber fixation structures is a result of the anisotropic etching of (100) silicon by means aqueous KOH. The technology aspects of this aggressive wet etching step are discussed as well as the optimisation results of a suitable KOH masking layer: a low refractive index PECVD nitride. The extension of an MCM-D technology with V-grooves generates the possibility to integrate side-emitting O/E components and fibers with the electronics on the same MCM-Si motherboard. This implies a more dense and compact motherboard with the potential of obtaining higher bandwidths due to the minimal distance between optics and electronics. Additionally, low coupling losses between O/E components and fibers are obtained by means of passive alignment as the accuracy of the V-grooves in silicon allow us to place the fibers with high precision. The feasibility of this optics-extended MCM-D technology will be shown in the example of O/E measurement probes. In the fabrication process of such O/E measurement probes, we will focus on the multilayer MCM-D motherboard extended with V-grooves, on the FC mounting of both RF-amplifier chip and laserdiode, and on the alignment of the fiber.

Design of multi-indicator integrated testing system for tobacco intelligent silk production line

2021 ◽  
pp. 1-13
Author(s):  
Dayong Guo ◽  
Qing Hu
Keyword(s):  
Response Time ◽  
Data Transmission ◽  
Production Line ◽  
Network Architecture ◽  
Production Management ◽  
Detection System ◽  
System Response ◽  
Testing System ◽  
Ring Network ◽  
Transmission Speed

Aiming at the problems of low precision, slow data transmission speed and long response time of silk quality and temperature control in tobacco intelligent production line, a multi-index testing system is designed. According to the characteristics of PROFIBUS fieldbus technology, combined with PROFIBUS transmission technology, a factory level information network is formed with PROFIBUS-DP as the exchange mode. Based on the PROFIBUS technology, the dual redundancy structure of control ring network and management information ring network is adopted, and the whole network architecture is constructed by logic layering. From the point of view of building enterprise MES system, it locates real-time production monitoring, production task receiving and production line related data collection, integrates equipment control layer, centralized monitoring layer and production management layer, and designs system function structure. The functional structure of the system, and the establishment of a number of data tables, to achieve a tobacco intelligent production line silk quality detection system design. Experimental results show that this method can effectively speed up the data transmission speed and shorten the system response time.

Analysis of data transmission technique based on pulsed laser

2012 ◽  
Vol 20 (1) ◽  
Author(s):  
T. Drozd ◽  
M. Zygmunt ◽  
P. Knysak ◽  
J. Wojtanowski
Keyword(s):  
Data Transmission ◽  
Continuous Wave ◽  
Pulsed Laser ◽  
Pulsed Lasers ◽  
Transmission Method ◽  
Transmission Systems ◽  
Laser Technology ◽  
Light Pulses ◽  
Transmission Technique ◽  
Transmission Speed

AbstractPulsed lasers are used mainly in lidar systems as sources of short and highly energetic light pulses. In data transmission systems continuous wave lasers are typically applied, however it is also possible to use pulsed lasers in such systems. Such approach seems to be especially reasonable for devices where a pulsed laser is applied anyway and executes another function (rangefinding). The article discusses a data transmission concept based on a pulsed laser technology. Advantages and limits of such a transmission method are described. Influence of individual transmission elements on the effective data transmission speed is analysed.

scholarly journals Development of a new seismic-data acquisition station based on system-on-a-programmable-chip technology

2013 ◽  
Vol 56 (3) ◽  
Author(s):  
Zhang Qi-sheng ◽  
Deng Ming ◽  
Guo Jian ◽  
Luo Wei-bing ◽  
Wang Qi ◽  
...  
Keyword(s):  
Power Consumption ◽  
Data Acquisition ◽  
Digital Filter ◽  
Data Transmission ◽  
Seismic Data ◽  
Low Noise ◽  
High Definition ◽  
Control Data ◽  
Seismic Data Acquisition ◽  
Transmission Speed

<p>There has been considerable development of seismic detectors over the last 80 years. However, there is still a need to further develop new earthquake exploration and data acquisition systems with high precision. In particular, for China to keep up with the latest technology of these systems, it is important to be involved in the research and development, instead of importing systems that soon fall behind the latest technology. In this study, the features of system-on-a-programmable-chip (SoPC) technology are analyzed and used to design a new digital seismic-data acquisition station. The hardware circuit of the station was developed, and the analog board and the main control data-transmission board were designed according to the needs of digital seismic-data acquisition stations. High-definition analog-to-digital converter sequential digital filter technology of the station (cascade integrator comb filter, finite impulse response digital filter) were incorporated to provide advantages to the acquisition station, such as high definition, large dynamic scope, and low noise. A specific data-transmission protocol was designed for the station, which ensured a transmission speed of 16 Mbps along a 55-m wire with low power consumption. Synchronic acquisition was researched and developed, so as to achieve accuracy better than 200 ns. The key technologies were integrated into the SoPC of the main control data-transmission board, so as to ensure high-resolution acquisition of the station, while improving the accuracy of the synchronic acquisition and data-transmission speed, lowering the power consumption, and preparing for the follow-up efforts to tape out.</p>

scholarly journals ANALISIS KOMPENSASI DISPERSI MENGGUNAKAN PENGUAT RAMAN PADA JARINGAN WDM (WAVELENGTH DIVISION MULTIPLEXING) DALAM KOMUNIKASI SERAT OPTIK

2018 ◽  
Vol 15 (2) ◽  
pp. 88
Author(s):  
Roby Ikhsan ◽  
Romi Fadli Syahputra ◽  
Saktioto Saktioto
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Data Transmission ◽  
Dispersion Compensation ◽  
Optical Fiber Communication ◽  
Fiber Communication ◽  
Wavelength Division ◽  
Fiber Raman Amplifier ◽  
Wdm Network ◽  
Transmission Speed

The discovery of optical fiber cause widespread revolution of communication system. Optical fiber communication has excellency on data transmission speed, security, flexibility, and broadly bandwidth. The applying of WDM network can broaden the bandwidth so that the transmission performance becomes more splendid. Although some factors such as dispersion, attenuation, and scattering can hinder the performance of fiber optic on sending data. Moreover dispersion can wreck data and spread pulse as it travels alongs fiber so that causing interference. There is some methods  of dispersion compensation. In this paper, Fiber Raman Amplifier is used on WDM network to strengthen signal which is sent to detector. This research utilize simulation approachment  with various bandwidth and length fiber. The results show lowest BER value and highest Q-factor at bandwidth frequency of 30 GHz and fiber length of 20 km.

Smart Structure Based on Continuous Optical Fiber Sensing Technique (Review)

2011 ◽  
Vol 71-78 ◽  
pp. 4138-4141
Author(s):  
Wen Cheng Jin ◽  
Juan Wan ◽  
Qing Rong Ding ◽  
Chang Dong Zhou
Keyword(s):  
Optical Fiber ◽  
High Precision ◽  
Optical Fibers ◽  
Electromagnetic Interference ◽  
Signal Analysis ◽  
Continuous Measurement ◽  
Smart Structure ◽  
Fiber Sensing ◽  
Key Technologies ◽  
Optical Fiber Sensing

Continuous optical fiber sensing technique has the advantages of continuous measurement, corrosion preventing, anti-electromagnetic interference and high precision. This paper integrates continuous optical fiber into smart structure system. It combines the advantages of continuous optical fibers with self-adapting function of smart structures. It may have wide uses in engineering. But it is developing. It has some key technologies to be solved, such as the manufacture and embedment technique of special optical fibers, optimized arrangements of fibers, smart identification of the signal, analysis processing for enormous data and realization of self-adapting function.

scholarly journals MATHEMATICAL MODELING OF DATA TRANSMISSION SYSTEM IN COMMUNICATION NETWORKS/DUOMENŲ PERDAVIMO RYŠIO TINKLAIS MATEMATINIS MODELIAVIMAS

Aviation ◽  
2008 ◽  
Vol 12 (1) ◽  
pp. 18-21
Author(s):  
Wu Zijuan
Keyword(s):  
Mathematical Modeling ◽  
Communication Networks ◽  
Frequency Band ◽  
Data Transmission ◽  
Error Probability ◽  
Transmission System ◽  
Fixed Frequency ◽  
Data Transmission System ◽  
Transmission Speed ◽  
Band Number

Probability failure in operation as well as error probability at fixed frequency band, number of users, and data transmission speed have been analyzed. Santrauka Išnagrinėta aptarnavimo atmetimo tikimybė bei klaidų tikimybė fiksuotų dažnių juostose, abonentų skaičiaus ir informacijos perdavimo greičio nustatyme.

Passive Alignment of Optical Fiber in a V-Groove With Low Viscosity Epoxy Flow

2003 ◽  
Author(s):  
Jeffery C. C. Lo ◽  
C. S. Yung ◽  
S. W. Ricky Lee ◽  
Steve H. K. Lee ◽  
J. S. Wu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Processing Time ◽  
Cover Plate ◽  
Manufacturing Cost ◽  
Optoelectronic Packaging ◽  
Low Viscosity ◽  
Epoxy Dispensing ◽  
A New Technique ◽  
Passive Alignment

The alignment of optical fibers is very critical in optoelectronic packaging. A slight offset in any direction may severely affect the performance of the photonic device. Recently, passive alignment of optical fibers has attracted substantial attention due to its lower manufacturing cost and faster processing time when compared with active alignment. For conventional passive alignment, the position of each optical fiber is defined by the geometry of a V-groove. The epoxy is dispensed from the top of the V-groove and another cover plate is usually required to press the fiber against the walls of the V-groove. In the present study, a new technique for epoxy dispensing is developed. Instead of being applied from the top of the V-groove, some low viscosity epoxy is dispensed in a “canal” first. The epoxy fills an adjacent “reservoir” and then flows into the V-groove. Subsequently the epoxy flow runs through the gap between the optical fiber and the V-groove walls. It is observed that the flow of epoxy can align the optical fiber by the surface tension. Once the optical fiber is aligned and the epoxy is cured, more epoxy is applied in a glob-top manner to mechanical enhancement. In this paper, the configuration of the V-groove and associated features, the epoxy dispensing process, and the results of alignment are presented in details.

Real-Time Video Processing Technology of Multi-Core DSP Based on TIM Theory

2014 ◽  
Vol 556-562 ◽  
pp. 4986-4989
Author(s):  
Qiu Ping Gao
Keyword(s):  
Video Processing ◽  
Data Transmission ◽  
Optimization Design ◽  
Innovation Management ◽  
Channel Number ◽  
Teaching Management ◽  
Teaching Innovation ◽  
Management Platform ◽  
Nuclear Number ◽  
Transmission Speed

This paper designs multi-core and multi-channel physical education (PE) teaching innovation management platform and introduces TIM theory, so as to collect the transmission speed of video signal for different number of nuclei and the number of channels' teaching management platform. It has found from the calculating that, when the nuclear number is 1, and the channel number is 2, the speed of data transmission signal is the lowest, and the theoretical value is 5.6, the measured value is 5.5, namely the theoretical value is consistent with the measured value. When the nuclear number is 4, and the channel number is 8, the speed of data transmission signal is the highest, and the theoretical value is 9.6, the measured value is 9.7, namely the theoretical value also consistent with the measured value. So in the design of PE teaching innovation management platform, it needs to synthetically consider the nuclear number of DSP and the channels number, so as to achieve the effects of optimization design for the teaching management platform.

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