Wavelength demultiplexer consisting of Photonic crystal superprism and superlens.
Wavelength demultiplexer consisting of Photonic crystal superprism and superlens.
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DOI：
10.1364/opex.13.010768
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发表时间：
2005-12
期刊：
影响因子：
3.8
通讯作者：
T. Matsumoto;S. Fujita;T. Baba
中科院分区：
文献类型：
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作者：
T. Matsumoto;S. Fujita;T. Baba
我们提出了一种新的紧凑型波长解复用器，其中两个功能所产生的光子晶体的反常色散特性相结合。一种是超棱镜，它表现出大的角色散和光束扩展。另一个是用于聚焦扩展光束的超透镜。理论上，0.4 nm的高分辨率将实现在1.55？m波长范围，器件面积分别为0.2和2.0 mm2，可用带宽为3和35 nm。此外，通过优化光子晶体的输入和输出端，期望小于1dB的低插入损耗。在时域有限差分仿真中清楚地证明了解复用功能。
We propose a novel compact wavelength demultiplexer, for which two functions arising from the anomalous dispersion characteristics of photonic crystals are combined. One is the superprism that exhibits large angular dispersion and expansion of light beam. The other is the superlens used for the focusing of the expanded light beam. Theoretically, a high resolution of 0.4 nm will be realized in the 1.55 ?m wavelength range with device areas of 0.2 and 2.0 mm2, respectively, for available bandwidths of 3 and 35 nm. Also, a low insertion loss of less than 1 dB is expected by the optimization of input and output ends of the photonic crystals. The demultiplexing function is clearly demonstrated in finite-difference timedomain simulation.