Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Optical Receiver"”.
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Design of energy-efficient optical receiver
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Optical receiver techniques for integrated photonic links
… fabric of many-core computer systems. The optical technology uses wavelength-division-multiplexing and a high degree of integration in order to surpass electrical I/O in both throughput and energy by more than an order of magnitude. However, integrated photonic systems need to be properly …
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Analysis of variation in on-chip waveguide distribution schemes and optical receiver circuits
Recently, optical interconnect has emerged as a possible alternative to electrical interconnect at chip-to-chip and on-chip length scales because of its potential to overcome power, delay, and bandwidth limitations of traditional electrical interconnect. This thesis examines the issues of variation …
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Ground Station Mixed-Signal PCB and SFP Ethernet-to-Optical Connector for the Deployable Optical Receiver Aperture (DORA) CubeSat
The Deployable Optical Receiver Aperture (DORA) project at the Jet Propulsion Laboratory (JPL) in collaboration with Arizona State University (ASU) aims to demonstrate 1 Gbps data rate for crosslink communications among small spacecraft. There are numerous applications for this technology, …
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Receivers for energy efficient optical interconnects
… are connected with high bandwidth interconnects. Optical interconnects are increasingly deployed within the data centers to meet the growing bandwidth requirements. Both intensity modulation direct detection (IM-DD) optical links and coherent optical links are employed. The development of the …
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A modulation-doped field-effect transistor-based optoelectronic integrated circuit receiver for optical interconnects
The success of optical interconnects for computer communications depends critically on the development of a viable monolithic optoelectronic integrated circuit (OEIC) technology. A key component of any lightwave communication system is the optical receiver/preamplifier which converts the low-level …
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Importance sampling simulation of free-space optical APD pulse position modulation receivers
Free-space optical communication technology has many advantages over RF/microwave in satellite and other spacecraft applications where reductions in size, weight and prime power requirements are combined with increased data transfer capability over long distances. Ultimately, the design and …
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Next generation optical receivers : integration and new materials platform
Future growth of optical communication into new application and market space is highly dependent on the ability of optical receivers to increase functionality while reducing price and physical size. Current hybrid receiver technology is inadequate in meeting the cost and performance demands of …
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DESIGN OF AN OPTICAL GROUND STATION FOR SPACE-BASED QUANTUM KEY DISTRIBUTION
… loss. Meanwhile, on the ground, a network of optical ground station (OGS) is necessary to support quantum satellite missions. The optical receivers are required to maximise the collection of photons that are sent down to generate secret keys for encryption. Hence, there is great value in …
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Transimpedance Amplifier (TIA) Design for 400 Gb/s Optical Fiber Communications
Analogcircuit/IC design for high speed optical fiber communication is a fairly new research area in Dr. Ha's group. In the first project sponsored by ETRI (Electronics and Telecommunication Research Institute) we started to design the building blocks of receiver for next generation 400 Gb/s optical …
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Statistical Methods of Bit Error Rate Estimation in Optical Communication Systems
… the BER and electrical characteristics of an optical receiver circuit. Low correlation is found between the receiver performance and the electrical characteristics. This may be caused by a high variability in the quality of the optical portion of the receiver as compared to the electrical …
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Dynamic pixel selection in free-space photon-counting optical communication systems for the exploitation of excess channel capacity
Atmospheric turbulence in free-space optical communications turns signal demodulation and decoding into a multimode problem as wavefronts of the transmitting laser beams are warped spatially past the desired form of a diffraction-limited spot at the receiver end of a free-space optical receiver. …
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An optical data receiver for integrated photonic interconnects
… of transmission. This work presents a novel optical data receiver for integrated optical links. Both the optical receiver and the photodiode are monolithically-integrated in the same CMOS substrate. The highly-digital receiver senses the photodiode current using a regenerative cross-coupled …
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Development of an optical nor gate transistor laser integrated circuit
… device, making it uniquely suited for electro-optical integration. Furthermore, with the addition of waveguide structures, a transistor laser integrated circuit is well suited for monolithic logic processing using on-chip optical interconnects. Although there are still many challenges to …
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CMOS Receiver Design for Optical Communications over the Data-Rate of 20 Gb/s
Circuits to extend operation data-rate of a optical receiver is investigated in the dissertation. A new input-stage topology for a transimpedance amplifier (TIA) is designed to achieve 50% higher data-rate is presented, and a new architecture for clock recovery is proposed for 50% higher clock …
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Development of a monolithic very large scale optoelectronic integrated circuit technology
Optical interconnects have been proposed for use in high-speed digital systems as a means of overcoming the performance limitations of electrical interconnects at length scales ranging from one millimeter to one hundred meters. To achieve this goal, an optoelectronic very large scale integration …
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Applications of Machine Learning in the Design and Optimization of Analog Integrated Circuits and Systems
… the optimization of a 64 Gbaud PAM-4 ADC-based optical receiver behavioural model, in which the previously proposed T-coil-enhanced ESD circuit optimization scheme is embedded. The third application uses reinforcement learning (RL) techniques to optimize critical analog IC blocks, such as …
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Detection Statistics Of Multiple-Pulse Optical Signals Through Atmospheric Turbulence
<p>Statistics are studied for signal detection in optical communication systems operating through the atmosphere. Optical communication systems with which this study is concerned are those that employ intensity modulation and direct detection. Atmospheric turbulence, which is fluctuations in the …
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Improvements in Inductively Coupled Wireless Power Transfer Through Non-Sinusoidal Excitation and Closed-Loop Operation Using Optical Feedback
… second technique is closed-loop operation with optical feedback. An infrared LED is introduced as both the rectifier and the signal source in the receiver in an inductively coupled WPT system. This LED is directly driven by the rectified current passing to the load. So, the intensity of the …
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Noise Suppression in OCDMA Networks using Nonlinear Optical Devices
Optical code division multiple access (OCDMA) is a multiplexing technique that has a number of inherent advantages that make it suitable for use in passive optical networks, such as allowing subscribers to transmit information in an asynchronous fashion over a single optical fibre. This form of …
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