Photonic Analog-to-Digital Conversion - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Photonic Analog-to-Digital Conversion write by Barry L. Shoop. This book was released on 2012-11-02. Photonic Analog-to-Digital Conversion available in PDF, EPUB and Kindle. Provides a comprehensive look at the application of photonic approaches to the problem of analog-to-digital conversion. It looks into the progress made to date, discusses present research, and presents a glimpse of potential future technologies.
Photonic Analog-to-Digital Conversion Using a Robust Symmetrical Number System
Photonic Analog-to-Digital Conversion Using a Robust Symmetrical Number System - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Photonic Analog-to-Digital Conversion Using a Robust Symmetrical Number System write by . This book was released on 2005. Photonic Analog-to-Digital Conversion Using a Robust Symmetrical Number System available in PDF, EPUB and Kindle. A photonic analog-to-digital converter (ADC) based on a robust symmetrical number system (RSNS) was constructed and tested. The analog signal to be converted is used to amplitude modulate an optical pulse from a laser using three Mach-Zehnder interferometers (MZI). The Mach-Zehnder interferometers fold the input analog signal for a three-channel RSNS encoding. The folding waveforms are then detected and amplitude-analyzed by three separate comparator banks, the outputs of which are used to determine a digital representation of the analog signal. This design uses the RSNS preprocessing to encode the signal with the fewest number of comparators for any selected bit resolution. In addition to the efficiency of its use of comparators, the RSNS encoding has inherent Gray-code properties making it particularly attractive for eliminating any possible encoding errors. The RSNS encoding is combined with an optical infrastructure that offers high bandwidth and low insertion loss characteristics. A full implementation was constructed and tested. The lack of a high-speed data acquisition device limited the results to examining the preprocessing and digital processing separately. With the system integration of a data acquisition device, a wideband direct digital antenna architecture can be demonstrated.
Richtlinien zum Kösener Studium generale
Richtlinien zum Kösener Studium generale - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Richtlinien zum Kösener Studium generale write by . This book was released on 1963. Richtlinien zum Kösener Studium generale available in PDF, EPUB and Kindle.
Integrated Photonic Analog-to-digital Converters
Integrated Photonic Analog-to-digital Converters - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Integrated Photonic Analog-to-digital Converters write by Anatol M. Khilo. This book was released on 2011. Integrated Photonic Analog-to-digital Converters available in PDF, EPUB and Kindle. Accurate conversion of wideband multi-GHz analog signals into the digital domain has long been a target of analog-to-digital converter (ADC) developers, driven by applications in radar systems, software radio, medical imaging, and communication systems. Aperture jitter has been a major bottleneck on the way towards higher speeds and better accuracy. Photonic ADCs, which perform sampling using ultra-stable optical pulse trains generated by mode-locked lasers, have been investigated as a promising approach to overcome the jitter problem and bring ADC performance to new levels. This work demonstrates that the photonic approach can deliver on its promise by digitizing a 41 GHz signal with 7.0 effective bits and 52 dBc spur-free dynamic range (SFDR) using a discrete-component photonic ADC. This corresponds to 15 fs jitter, a 4-5 times improvement over the jitter of the best electronic ADCs, and an order of magnitude improvement over the jitter of electronic ADCs operating above 10 GHz. The feasibility of a practical photonic ADC is demonstrated by creating an integrated ADC with a modulator, filters, and photodetectors fabricated on a single silicon chip and using it to sample a 10 GHz signal with 3.5 effective bits and 39 dBc SFDR. In both experiments, a sample rate of 2.1 GSa/s was obtained by interleaving two 1.05 GSa/s channels; higher sample rates can be achieved by increasing the channel count. A key component of a multi-channel ADC - a dual multi-channel high-performance filter bank - is successfully implemented. A concept for broadband linearization of the silicon modulator, which is another critical component of the photonic ADC, is proposed. Nonlinear phenomena in silicon microring filters and their impact on ADC performance are analyzed, and methods to reduce this impact are proposed. The results presented in the thesis suggest that a practical integrated photonic ADC, which successfully overcomes the electronic jitter bottleneck, is possible today.
Photonic Time-stretched Analog-to-digital Conversion
Photonic Time-stretched Analog-to-digital Conversion - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Photonic Time-stretched Analog-to-digital Conversion write by Yan Han. This book was released on 2004. Photonic Time-stretched Analog-to-digital Conversion available in PDF, EPUB and Kindle.
