This paper addresses the design of arrayed waveguide grating (AWG) devices from the viewpoint of –3dB bandwidth and free spectral range. A straightforward numerical method of obtaining the physical dimensions of a real device for given – 3dB bandwidth and free spectral range is presented. The paper assesses also the influence of the –3dB bandwidth of the AWG on the performance of a dense wavele...

A miniature arrayed waveguide grating of 70 60 mm size consisting of Si photonic wire waveguides was designed using complete modelling in the finite-difference time-domain simulation. The device was fabricated onto a silicon-on-insulator substrate and evaluated in the wavelength range around 1.55 mm. The clear demultiplexing characteristics were observed with a channel spacing of 11 nm and a lo...

An arrayed waveguide grating (AWG) demodulation integration microsystem is investigated in this study. The system consists of a C-band on-chip LED, a 2 × 2 silicon nanowire-based coupler, a fiber Bragg grating (FBG) array, a 1 × 8 AWG, and a photoelectric detector array. The coupler and AWG are made from silicon-on-insulator wafers using electron beam exposure and response-coupled plasma techno...

We present an analysis of Fourier-transform arrayed waveguide gratings in the Fresnel diffraction regime. We report a distinct spatial modulation of the interference pattern referred to as the Moiré-Talbot effect. The effect and its influence in a FT AWG device is explained by deriving an original analytical expression for the modulated field, and is also confirmed by numerical simulations usin...

Arrayed waveguide gratings are useful structures for the implementation of wavelength division multiplexing; however, in their current form, they are too large to be made cheaply or to use as an integrated component. This paper discusses the work of the MIT Microphotonics Center, explains the operation of an arrayed waveguide grating, and discusses plans for a Master of Engineering thesis proje...

Array waveguide grating(AWG) is a kind of role scattered light passive device base on the plane wave circuit technology. A broadband laser beam can be divided into multibeam laser light by wavelength. In this paper, the characteristics of AWG are used and based on previous studies. Using an array waveguide grating fiber Bragg grating (FBG) demodulation method, and the mathematical model of FBG ...