Narrow Tunable Polysilane Optical Waveguide Bragg Grating Filters

Add-Drop Demultiplexer Operating in an Optical Michelson Interferometer Based in Fiber Bragg Gratings for Time Division Multiple Access Systems

“…It has recently been shown [3,7,8] that the numeric solution of an MI constructed with a directional coupler followed by Bragg gratings in the two output arms constitutes an all-optical interferometer applied to telecommunications systems [7,9]. Based on those characteristics, the objective here it to study MIs working as a multiplexer add-drop filter.…”

“…The analysis of this device requests the solution of the transfer matrix, and it is complicated by the fact that the coupling and reflections exist simultaneously in a certain region of the device. The analysis of the MI is easier, since the regions of the coupling are separate from the Bragg grating, as shown in Figure 1, [8][9][10]. It is shown that this picture can be applied to the device as a coupler followed by a Bragg grating, and the analysis is considerably simple.…”

A performance study of a nonlinear all Fibre Michelson interferometer, add-drop multiplexer, based in Fibre Bragg grating mirrors

“…The Add-Drop Multiplexer (ADM) is one of the key components for dense wavelengthdivision multiplexing (DWDM) systems (Murakami 2005;Kobayashi et al 2007;Baumann et al 1996). In the emerging next-generation transport networks, called intelligent optical networks, WDM-based optical components such as add-drop multiplexers (ADMs) and optical cross-connects (OXCs) will have full knowledge of the wavelengths in the network, status, and traffic-carrying capacity of each wavelength (Ilyas and Mouftah 2003).…”

Low cost polymer sampled waveguide Bragg grating fabricated by using contact lithography

“…While for WBG working at around 1550 nm, the period of the 1st order Bragg grating is submicron and cannot be realized by the conventional contact lithography. So polymer WBGs have been proposed and fabricated by much more complex and relative costly methods such as the phase mask method [1], the two beam interference method [2,3], the solvent assisted microcontact molding (SAMIM) method [4] and the nanoimprinting method [5][6][7][8][9][10][11][12]. As known, by sacrificing some coupling strength in the WBG using the 3rd order grating structure, the grating period can be increased to about 1.6 μm, which can be achieved by the conventional contact lithography and the device cost can be greatly reduced.…”

“…Recently we have successfully fabricated the 3 λ order polymer WBG array [13] and the 3rd order polymer chirped WBG [14] using the simple contact lithography method. Until now, various types of WBGs which including the uniform WBG [3][4][5][6][7][8][9][10]13], tunable WBG [1,2,11,12], chirped WBG [14][15][16], waveguide Bragg grating Fabry-Perot cavity [17] have been proposed and fabricated using the polymer. Sampled waveguide Bragg grating (SWBG), an important derivative of WBG, is constructed by multiplying a sampling function to a uniform grating.…”