Showing 1-25 of 6,557 resultsfor "Index Terms":Optical Transmittance
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Development of an Active Intravascular MR Device With an Optical Transmission System
Magnetic resonance imaging (MRI) is a safe and reliable medical imaging method providing good soft tissue contrast while avoiding harmful ionizing radiation. It is highly desirable to use the MRI technology for interventional procedures. However, due to resonance effects that can result in tissue heating, long conducting cables must be avoided. Motivated by the need for more radio-frequency (RF) s...Show More
Research and Analysis Indicators Optical Telecommunication Networks Based on POM, WDM and DWDM Technology
2020 International Conference on Engineering Management of Communication and Technology (EMCTECH)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
The quality of functioning optical telecommunication systems using distributed fiber-optic communication lines and fiber-optic transmission lines, fiber-optic cables, receiving and transmitting optical modules is analyzed. Based on the study, a method is proposed for calculating the indicators optical telecommunication networks based on PON (Passive Optical Network), WDM (Wavelength Division Multi...Show More
Optical transmission of video signals using pulse time modulated sub-carriers over optical delays carriers
2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS)
Year: 2012 | Conference Paper |
Use of pulse time modulated (PTM) subcarriers in optical links represents an attractive alternative for transmitting analog and digital signals over optical fiber channels. A novel approach for the optical transmission of multiplexed audio and video signals using a pulse width modulated (PWM) electrical subcarrier over optical delays is reported in this paper. The generation optical delays, is ach...Show More
Transmittance of Multi Gaussian Optical Beams for Uplink Applications in Atmospheric Turbulence
On-axis slant path uplink transmittance (used in short as transmittance throughout the text) for multi Gaussian optical beam in Kolmogorov atmospheric turbulent medium is investigated. It is observed that for both the flat-topped and the annular beams, as the propagation distance, wind speed and the zenith angle increase, the transmittance decreases. The transmittance of flat-topped beams increase...Show More
Novel technique for volatile optical memory using solitons
2006 IFIP International Conference on Wireless and Optical Communications Networks
Year: 2006 | Conference Paper |
Recent advances in optics have shown that solitons have a great potential for upgrading the future optical systems which demand fast and reliable data transfer. Along side different architectures have evolved to realize an optical computer. Due to difference in processing speeds of optical and electronic devices and usage of opto-electronic converters the efficiency of the optical computers is aff...Show More
Abnormally high optical transmittance of refractive-index modified ZnO / organic hybrid films
2008 Conference on Optoelectronic and Microelectronic Materials and Devices
Year: 2008 | Conference Paper |
Cited by: Papers (1)
Hybrid films consisting of ZnO nanoparticles and organic matrices were fabricated at particle concentration levels of up to 60 wt%. The correlation between the refractive index and optical transmittance in the visible light region was investigated. The refractive index of the hybrid films was modified in a continuous manner in the range from 1.44 to 1.55. The refractive index increased linearly as...Show More
Character measurement of fiber optic image device using CCD camera
2010 International Conference on Computer Application and System Modeling (ICCASM 2010)
Year: 2010 | Conference Paper |
Cited by: Papers (1)
Aim at the requirement of researching new optical devices (fiber optic taper, fiber optic faceplate and fiber optic inverter) a new method for testing the parameters of fiber optic imaging devices featuring a single integral sphere and a CCD camera is put forward. Compared with the method of two integral spheres with photoelectric detector, this method features simply structure, wealth information...Show More
Quo Vadis, Optical Network Architecture? Towards an Optical-processing-enabled Paradigm
2022 Workshop on Microwave Theory and Techniques in Wireless Communications (MTTW)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Among various aspects in optical network architectures, handling transit traffic at intermediate nodes represents a defining characteristic for classification. In this context, the transition from the first generation of optical-electrical-optical mode to the second generation of optical-bypass marked a paradigm shift in redesigning optical transport networks towards greater network efficiency. Op...Show More
Two-Dimensional Optical Interconnection Based on Two-Layered Optical Printed Circuit Board
Sung Hwan Hwang;Mu Hee Cho;Sae-Kyoung Kang;Tae-Woo Lee;Hyo-Hoon Park;Byung Sup Rho
The demonstration of an optical platform based on an optical printed circuit board (OPCB) was shown for two-dimensional (2-D) chip-to-chip optical interconnection. The optical platform was designed for 96 Gb/s total throughput which was 2 layers times 4 channels times 4 parallel links times 3 Gb/s/ch and using a passive assembly technology. We fabricated three main components for the 2-D optical i...Show More
In this paper, we propose a low loss and cost-effective assembly in optical transceiver for on-board applications by applying graded-index (GI) core polymer waveguides to effectively couple the signal light between light sources/photodetectors and multimode fibers (MMFs). In order to satisfy the requirements for higher bandwidth data transmission, on-board optical interconnects have been anticipat...Show More
Using photonic filters for tuning dispersion-indused microwave transmission windows on radio over fiber schemes
Celso Gutierrez-Martinez;Joel Santos-Aguilar;Jose Alfredo Torres-Fortiz;Adolfo Morales-Diaz
2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference
Year: 2007 | Conference Paper |
Cited by: Papers (2)
In the RF domain, the frequency response of a radio over fiber system using a wide spectrum multi-longitudinal optical source and dispersive optical fiber exhibits band-pass microwave transmission windows. Such a response has been proposed for implementing RF filters and also for multiplexing analog or digital information when microwave camel's can be allocated at successive transmission windows. ...Show More
A 53-Gbit/s VCSEL-Based High Density Optical Assembly for Large Capacity Optical Interconnection
2018 IEEE CPMT Symposium Japan (ICSJ)
Year: 2018 | Conference Paper |
A 53-Gbit/s VCSEL-based compact optical module is proposed. In order to realize 50-Gbit/s-class optical transmission, high-bandwidth optical devices are important. Accordingly, the feasibilities of a high speed optical circuit applying high-bandwidth (>20 GHz) optical devices were studied by simulation. Moreover, an optical module at the receiver (Rx) side was fabricated on the basis of simulation...Show More
Multi-Node All-Optical Interconnect Network Routing for Data-Center Parallel Computers
Shuailong Yang;Liu Yang;Fengguang Luo;Biyu You;Yao Ni;Danhui Chen
A multi-node all-optical interconnect network-routing architecture scheme and implementation technology are designed to improve high-speed and large-capacity data transmission in data centers. In the design of the optical interconnect routing electro-optic printed circuit board (EOPCB), the signal generated by the FPGA is directly modulated by the VCSEL arrays, and through the coupler into the par...Show More
2×25G low power optical IC for Thunderbolt optical cable technology
Jerry Gao;Hui-Chin Wu;Guobin Liu;Edmond Lau;Li Yuan;Christine Krause;Hengju Cheng
2016 IEEE Optical Interconnects Conference (OI)
Year: 2016 | Conference Paper |
This paper presents low power, 2×25.625Gb/s optical transmitter and receiver ICs for Intel Thunderbolt optical cable technology which is designed to connect electronic devices with the intension to become the standardized optical interconnect. Same circuit with four channels (4×25.625Gb/s) can be used in 100G data center optical interconnect. Each transmitter channel consumes 68mW, receiver channe...Show More
Optics in Future Data Center Networks
2010 18th IEEE Symposium on High Performance Interconnects
Year: 2010 | Conference Paper |
Cited by: Papers (23)
Ray Trace Analysis in Optical PCB Systems Using Micro-optic Connectors for 90° Deflection of Light Beams
The 9th International Conference on Advanced Communication Technology
Year: 2007 | Conference Paper |
Cited by: Papers (2)
Optical coupling efficiencies of distance and angular misalignment tolerances were investigated for a polymeric waveguide system and a silica fiber layer system through a ray trace simulation method. The polymeric waveguide system has 45deg-ended mirror connectors and a silica fiber layer system has 90deg-bent fiber connectors in an optical PCB. As misalignment tolerances have larger values, coupl...Show More
Study on optical path modeling and error analysis of stimulated brillouin fiber optic gyroscope
The 2010 IEEE International Conference on Information and Automation
Year: 2010 | Conference Paper |
Cited by: Papers (1)
The optical structure and working principle of brillouin fiber optic gyroscope was analyzed, the optical components Jones matrix model of brillouin fiber optic gyroscope was established by using Jones matrix optics theory, and the optical transfer matrix model was established based on optical transmission mechanism, the output light intensity expressions of brillouin fiber optic gyroscope and the ...Show More
Determination of atmospheric transmission media properties in optical spectrum by analysis of optical beam profile
2010 10th International Conference on Laser and Fiber-Optical Networks Modeling
Year: 2010 | Conference Paper |
Cited by: Papers (1)
This work is focused on the quick determination of characteristics of the atmospheric transmission media in optical band. Optical wireless links are briefly introduced. Two of the most important effects influencing optical signal properties in the atmosphere are shortly described. The goal of the work is in analysis of optical intensity profile. Due to the changes in the intensity profile we are a...Show More
Real-Time QoT Estimation Through SDN Control Plane Monitoring Evaluated in Mininet-Optical
Alan A. Díaz-Montiel;Bob Lantz;Jiakai Yu;Daniel Kilper;Marco Ruffini
IEEE Photonics Technology Letters
Cited by: Papers (8)
Quality of Transmission (QoT) metrics are used to predict and evaluate optical transmission performance, and have received much attention due to recent interest in real-time software defined networking (SDN) control and the challenges posed by open, disaggregated optical systems. In this letter, we address the QoT-estimation (QoT-E) issue, by focusing on real-time operations, where a dynamic contr...Show More
Optical Domain Down-Conversion of Microwave Signals for High Dynamic Range Microwave Fiber Optic Links
2006 International Topical Meeting on Microwave Photonics
Year: 2006 | Conference Paper |
Cited by: Papers (8)
Optical downconversion of microwave signals offers the potential for reduced noise and higher dynamic range over electronic downconversion. A novel downconversion scheme is introduced which allows for remote reception of microwave signals and downconversion to intermediate frequencies or baseband in the optical domain. Experiments show low noise and intermodulation effects. Further extensions of t...Show More
High Capacity 1 Tbps (20 Gbps/ch × 24 ch × 2 layers) multilayer optical printed circuit board with high optical coupling efficiency and low-power transmitter module
Yasunobu Matsuoka;Daichi Kawamura;Koichiro Adachi;Yong Lee;Toshiaki Takai;Saori Hamamura;Tomoaki Shibata;Hiroshi Masuda;Atsushi Takahashi;Norio Chujo;Toshiki Sugawara
2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference
Year: 2011 | Conference Paper |
We developed a high-speed (20 Gbps/channel) and large-capacity (1 Tbps/board) optical printed circuit board with a proposed two-lens optical coupling structure and a low-power (7.1 mW/Gbps) optical module using a CMOS IC, and successfully demonstrated 20-Gbps/ch operation in our optical interconnection.Show More
High Capacity 1 Tbps (20 Gbps/ch × 24 ch × 2 layers) multilayer optical printed circuit board with high optical coupling efficiency and low-power transmitter module
Yasunobu Matsuoka;Daichi Kawamura;Koichiro Adachi;Yong Lee;Toshiaki Takai;Saori Hamamura;Tomoaki Shibata;Hiroshi Masuda;Atsushi Takahashi;Norio Chujo;Toshiki Sugawara
Year: 2011 | Conference Paper |
Advanced Optical Waveform With Single Mode Fiber Optic for Developing Upcoming Networks of Mobile Communications
An advanced optical backbone waveform for the upcoming mobile networks termed optical orthogonal generalized frequency division multiplexing (O-OGFDM) with a single mode fibre (SMF) and intensity modulator/direct detector (IM/DD) converter is presented, investigated, and valued for the first time. The proposed waveform is launched for a single carrier modulation in an optical back-to-back system. ...Show More
Optical Format Conversion and Interconnection Between 1D and 2D Constellations for Flexible Optical Transmission Networks
Jiabin Cui;Huashun Wen;Guo-Wei Lu;Yinfang Chen;Kunpeng Zhai;Ming Li;Ninghua Zhu
Optical format conversion technologies have attracted a lot of attention to bridge the different optical networks employing different formats. In this paper, the advances of optical format conversion technologies are introduced and reviewed. Through analyzing the optical network architecture and modulation technology development, we focus on the format conversions between the signals with one dime...Show More
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