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光子学报  2006 

Theoretical Model of Spectral Response Efficiency of Arrayed Waveguide Grating Multi/demultiplexer
阵列波导光栅波分复用/解复用器光谱响应效率的理论模型

Keywords: Guided optics,Arrayed waveguide grating,Interference,Spectral response efficiency,Crosstalk,Diffraction,Coupling
导波光学
,阵列波导光栅,干涉,光谱响应效率,串扰,衍射,耦合,Guided,optics,Arrayed,waveguide,grating,Interference,Spectral,response,efficiency,Crosstalk,Diffraction,Coupling

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Abstract:

Based on the eigen mode field distribution of single mode waveguide, the Rayleigh- Sommerfeld diffraction integral formula and the reciprocal theorem of antenna theory, the coupling characteristic between two non-contact single mode planar waveguides in the coupler are presented. As the optical field superposition theorem of multiple beam interference with equal optical path difference and unequal amplitudes is engaged, the original analytic function expression of spectral response efficiency of arrayed waveguide grating multi/dernultiplexer is deduced. This expression affords the theoretical basis for analyzing the characteristics of arrayed waveguide grating multi/demultiplexer accurately and quickly. An example of computing the spectral responsivity and crosstalk of arrayed waveguide grating multi/demultiplexer is presented.

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