Modeling of arrayed waveguide grating for wavelength interrogation application |
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Authors: | FG Sun GZ Xiao ZY Zhang ZG Lu |
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Institution: | Photonic Systems Group, Institute for Microstructural Sciences, National Research Council, M-50 1200 Montreal Road, Ottawa, Canada K1A 0R6 |
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Abstract: | We have proposed and discussed a design of arrayed waveguide grating (AWG) for the application of wavelength interrogation. The spectral responses of a silica-based 16 channel AWG with channel spacing 1.6 nm have been simulated when different receiver waveguide spacing are used. It was found that the 3-dB bandwidth is reduced about 50% as the receiver waveguide spacing increasing from 20 μm to 30 μm. The effect of bandwidth of the spectral response on wavelength resolution of AWG based interrogator has been estimated and discussed. |
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Keywords: | Arrayed-waveguide grating Fiber Bragg grating sensor Wavelength interrogation Spectral response 3-dB bandwidth Receiver waveguide spacing Beam propagation method |
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