||Design and Analysis of Arrayed Waveguide Grating|
Fiber optic communication provides extremely broad bandwidth making transferring large quantities of voice/data possible. Dense Wavelength Division Multiplexing (DWDM) is the most critical technology of the optical communication system. It allows the simultaneous transmission of up to hundreds of channels within a single fiber across a distance of thousands of kilometers. Arrayed waveguide grating (AWG) is the most critical component in the DWDM system. It takes a single input and separates different optical “channels” into different output fibers. It is critical that we develop our own ability to design and fabricate such a device, so that we will not be left behind in the technological realm.
Although there are many commercially available AWG designing software such as the Phaser package of the BPMPRO software, they fail to provide a solution to aide in the final design of the optical mask for the AWG. In this thesis, we present a detailed, step-by-step analysis of an AWG device, as well as a description of how the AWG device works. In the process, we have classified the free parameters from that of depending parameters and have solved the routing problem in the layout of the waveguides.
To summarize the primary result of this thesis, we use five main points, which are:
1) We discuss the function of each block, the subsystems of the AWG.
2) We propose a novel, yet intuitive theory based on geometric optics – how the device is able to perform its de-multiplexing functions.
3) We present an analytic formula showing the linear property of the optical path difference along the source and the receiver arrays.
4) We solved the routing problem of the various waveguide sections of the AWG.
5) We have automated the process of generating optical masks in AutoCAD format from within a Matlab environment.
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