Search for dissertations about: "wavelength-division multiplexing"
Showing result 1 - 5 of 32 swedish dissertations containing the words wavelength-division multiplexing.
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1. Fiber-Optic Systems with Coherent Detection and Four-Dimensional Modulation
Abstract : To increase the data rates of fiber-optic communication systems, modulation formats withhigher spectral efficiency and/or higher power efficiency than binary formats are of greatinterest. These formats require coherent detection and this thesis has been dedicated toinvestigating both novel modulation formats and two different types of coherent systems. READ MORE
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2. Design and Characterization of SiN-based integrated optical components for Wavelength Division Multiplexing
Abstract : To follow the trend of the data traffic and to limit the size of the hyperscale data centers, communication solutions offering small footprint, low cost and low power consumption are needed. Optical interconnects used in data centers are mostly short reach (approximately 100 m) based on GaAs-based 850 nm vertical-cavity surface emitting lasers (VCSELs) and OM4 multimode fibers (MMF). READ MORE
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3. Fiber optic parametric amplifiers in single and multi wavelength applications
Abstract : This thesis describes fiber optical parametricamplifiers (FOPAs) used in single- and multi-wavelength channel applications.The FOPA was operated as a pulse source in optical transmission systems at bit rates of 10-160 Gb/s. It was evaluated in terms of bit error rate after transmission with link lengths up to 650 km. READ MORE
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4. Reliability versus Cost in Next Generation Optical Access Networks
Abstract : The ever increasing demands of Internet users caused by the introduction of new high bandwidth applications and online services as well as the growing number of users and devices connected to the Internet, bring many challenges for the operators, especially in the last mile section of the network. Next generation access architectures are expected to offer high sustainable bandwidth per user. READ MORE
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5. VCSEL and Integration Techniques for Wavelength-Multiplexed Optical Interconnects
Abstract : GaAs-based vertical-cavity surface-emitting lasers (VCSELs) are dominating short-reach optical interconnects (OIs) due to their high modulation speed, low power consumption, circular output beam and low fabrication cost. Such OIs provide the high bandwidth connectivity needed for interconnecting servers and switches in data centers. READ MORE