Search for dissertations about: "optical fibers"
Showing result 21 - 25 of 121 swedish dissertations containing the words optical fibers.
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21. Phase-sensitive amplifiers for nonlinearity impairment mitigation in optical fiber transmission links
Abstract : The fundamental limitations in fiber-optic communication are caused by optical amplifier noise and the nonlinear response of the optical fibers. The quantum-limited noise figure of erbium-doped fiber amplifiers (EDFAs) or any phase-insensitive amplifier is 3 dB. READ MORE
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22. On Nonlinear Compensation Techniques for Coherent Fiber-Optical Channel
Abstract : Fiber-optical communication systems form the backbone of the internet, enabling global broadband data services. Over the past decades, the demand for high-speed communications has grown exponentially. One of the key techniques for the efficient use of existing bandwidth is the use of higher order modulation formats along with coherent detection. READ MORE
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23. All-Fiber System for Photonic States Carrying Orbital Angular Momentum : A Platform for Classical and Quantum Information Processing
Abstract : The protection of confidential data is a fundamental need in the society in which we live. This task becomes more relevant when observing that every day, data traffic increases exponentially, as well as the number of attacks on the telecommunication infra-structure. READ MORE
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24. Error Correction Coding for Optical CDMA
Abstract : The optical fiber is a very attractive communication mediumsince it offers a large bandwidth and low attenuation and cantherefore facilitate demanding services such as high-qualityvideo transmission. As the reach of optical fiber is beingextended to the access network it is economically attractive toshare fibers between different users without adding activecomponents in the network. READ MORE
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25. Morphometry of the Optic Nerve Head as a Diagnostic Tool for Glaucoma
Abstract : Glaucoma is a chronic optic nerve head (ONH) disease. Gradual retinal ganglion cell and nerve fiber loss lead to morphological ONH change and visual field defects. Initial loss is often focal. Rate of progression and life expectancy guide treatment. READ MORE