A compact wavelength division de-multiplexer based on directional coupling of one-dimensional photonic crystal waveguides |
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| Authors: | Bing Chen Chunliang LiuGuizhong Liu |
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| Affiliation: | a Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
b Institute of Information and Communication Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China |
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| Abstract: | A fundamental dual-channel wavelength division de-multiplexer (WDDM) based on directional coupling of one-dimensional photonic crystal waveguides is presented, and its transmission characteristics of the WDDM are investigated by using finite-difference time-domain method. Calculated results indicate that for this WDDM, without any structural optimization, a high transmittance of more than 95% is observed at output ports. Combining the fundamental dual-channel WDDM with flexible bends of one-dimensional photonic crystal waveguides, we construct a simple and compact four-channel WDDM. Those WDDMs are expected to be applied to highly dense photonic integrated circuits. |
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| Keywords: | One-dimensional photonic crystal waveguides Wavelength division de-multiplexers Omnidirectional reflection bands Photonic integrated circuits |
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