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《Study on Optical Communications》 2018-03
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The Design and Analysis of Wavelength-Mode Division Multiplexer/Demultiplexer

LIU Lu;CHEN He-ming;School of Optoelectronic Engineering,Nanjing University of Posts and Telecommunications;Baer Institute of Excellence,Nanjing University of Posts and Telecommunications;  
To further improve the communication capacity,a wavelength-mode division multiplexer/demultiplexer based on photonic crystals is proposed.Consisting of four combination resonator,four wavelength selective reflection cavities,and a pair of asymmetric parallel waveguides for mode conversion,the wavelength-mode division multiplexer/demultiplexer is realized by adjusting the radius and refractive index of the cavity as well as the width and the coupling length of the asymmetric parallel waveguide.Finite Difference Time Domain(FDTD)methods are used to simulating the performance of mode division multiplexer/demultiplexer.Numerical simulations show that the designed device has the potential for high-capacity Wavelength Division Multiplexing-Mode Division Multiplexer(WDM-MDM)optical communication systems with a low insertion loss0.11 dB and a low mode crosstalk -16 dB,which can meet the requirements of today's large capacity optical communication system.
【Fund】: 国家自然科学基金资助项目(61077084 61571237);; 江苏省自然科学基金资助项目(BK20151509)
【CateGory Index】: TN929.1
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