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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 11 of 11 for “"Raman gain"”.
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Calculations and Measurements of Raman Gain Coefficients of Different Fiber Types
Fiber Raman amplification using the transmission line is a promising technology to increase the repeater distance as well as the capacity of the communication systems. Because of the growing importance of fiber Raman amplification, it is desired to predict the magnitude and shape of the Raman gain …
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Raman Spectroscopy Of Glasseswith High And Broad Raman Gain In The Boson Peak Region
This thesis investigates Raman spectra of novel glasses and their correlation with structure for Raman gain applications. Raman gain for all-optical amplification by fibers depends significantly on the cross section for spontaneous Raman scattering allowing to compare signal strength and spectral …
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New Organic/inorganic Hybrid Sol-gel Nanocomposite Materials For Raman Gain In Fiber Optics
… in the chemistry and photonic communities. Raman gain is one method that has been proposed to passively amplify optical data transmission through a distributed process. Amplification is obtained through a nonlinear light scattering process where an optical wave is amplified at the expense of …
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Direct Nonlinear Optics Measurements Of Raman Gain In Bulk Glasses And Estimates Of Fiber Performance
… state-of-the-art. One of the key properties is Raman gain by which a pump beam amplifies a signal beam of longer wavelength. An apparatus capable of directly measuring the spectral dependence and absolute magnitude of the material Raman gain coefficient using nonlinear optics techniques has been …
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Development of "Core-Suction" Technique for Fabrication of Highly Doped Fibers for Optical Amplification and Characterization of Optical Fibers for Raman Amplification
… doped fibers (HDFs) for optical amplification (Raman effect based or Erbium fiber based). The technique involves drawing the molten non-conventional core glass material into the silica cladding tube to form the preform. The developed technique is simple, inexpensive and shows great potential for …
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High Gain / Broadband Oxide Glasses For Next Generation Raman Amplifiers
Interest in Raman amplification has undergone a revival due to the rapidly increasing bandwidth requirements for communications transmission, both for long haul and local area networks, and recent developments in the telecom fiber industry and diode laser technology. In contrast to rare earth doped …
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Characterisation and implementation of synthetic diamond as a Raman laser material
… of diamond and its implementation in Raman lasers, utilising the materials high Raman gain as well as its impressive thermal properties. Diamond's potential as both an extremely compact and robust method for frequency conversion, allowing access to relevant but otherwise hard to reach …
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Measurement of the nonlinear refractive index (n2) and stimulated Raman scattering in optical fibers as a function of germania content, using the photorefractive beam coupling technique
… are the nonlinear refractive index n_2 and the Raman gain coefficient g_R. These parameters are related to the third order nonlinear susceptibility [x^{(3)}]. In this work, the photorefractive beam coupling technique, also called induced grating autocorrelation (IGA), has been used to measure …
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Raman amplification and performance altering effects
… investigation into several applications of the Raman scattering effect in communication optical fibres as well as how some of these applications can be modified to enhance the resulting performance. The majority of the work contained within is based on laboratory results using many commercially …
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Coherent optical nonlinearities in semiconductor microstructures
… used. For co-circular excitation traces of hyper-Raman gain are observed. In the second part of this dissertation, the nonlinear optical response of semiconductor microcavities in the nonperturbative regime is studied in resonant single-beam transmission and pump-probe experiments. In both types …
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Cladding-pumped Raman fibre laser sources
In this thesis, I investigate cladding-pumped Raman fibre lasers and amplifiers. Such devices, offering a novel way to generate Raman gain, combine the advantages of the hugely successful cladding-pumped rare-earth doped fibre lasers with those of stimulated Raman scattering. They not only inherit …