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A variety of photonic device functionalities has now been demonstrated using both graphene and more-or-less reduced versions of the closely related compound material, graphene oxide (GO). Graphene oxide can readily be produced with a range of degrees of oxidation — and it is then generically called reduced graphene oxide (rGO). It is also important, from various points-of-view, that rGO typically...
Graphene has already become an established medium for novel photonic devices and their applications. In some cases, e.g. the use of graphene as a non-linear medium with saturable absorption properties, it is experimentally convenient to use the readily available form that is known as graphene oxide. Moreover, technological and scientific developments that are advancing control of the properties of...
Nonlinearity and dispersion parameters of a piece of photonic crystal fiber (PCF) are investigated using a four-wave mixing process between two continuous pump waves. A theoretical analysis simulates the experimental conditions and is exploited to determine the nonlinear Kerr coefficient, chromatic dispersion.
An efficient Bismuth-based erbium-doped fiber amplifier (EDFA) is demonstrated using a double-pass configuration. The amplifier utilizes the double-propagation of the signal provided using an optical circulator at the output end of the erbium-doped fiber (EDF) and has obtained improved gain characteristics as compared to an amplifier of single-pass configuration. This amplifier provides again as high...
<para> In this paper, a bismuth-based erbium-doped fiber amplifier (Bi-EDFA) that operates in both the C- and L-band wavelength regions is demonstrated. The system employs two pieces of bismuth-based erbium-doped fiber (Bi-EDF) as the gain medium with a midway broadband fiber Bragg grating (FBG). The FBG functions to prevent the gain saturation at the C-band region, flatten the overall gain...
A single-frequency Brillouin erbium fiber laser (BEFL) is demonstrated operating at the 1560-nm region using a simple ring resonator with a very short piece of bismuth-based erbium-doped fiber (Bi-EDF) for the first time. A 49-cm-long Bi-EDF is used to provide both nonlinear gain and linear gain to generate a stimulated Brillouin scattering (SBS) and to amplify the generated SBS, respectively. The...
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