Short Polarization Splitter Based on Dual-Core Photonic Crystal Fiber with Ultra-high Extinction Ratio

Xuyou, 李绪友 Li; Zhenlong, 许振龙 Xu; Pan, 刘攀 Liu; Weiwei, 凌卫伟 Ling; Zhiyong, 张志永 Zhang

doi:10.3788/cjl201542.0605006

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“…光子晶体是 20 世纪末兴起的一种新型人工材料，它的介电常数和折射率等在空间中具有一定的周期性，由此产生布拉格散射，使光子晶体具有光子带隙的特性 [1][2] 。由光子晶体制成的各种光通信器件，包括全光开关 [3] 、光调制器 [4] 、光分束器 [5] 、波分复用/解波分复用器 [6][7] 等，具有尺寸小、损耗低、便于集成等优点。…”

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Investigation of Four-Channel Photonic Crystal Wavelength Division Demultiplexer

Xiaowei¹,

Pinpin²,

Wenkai³

2016

激光与光电子学进展

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The resonance rule and coupled characteristics of two dimensional triangle lattice photonic crystal ring resonator and micro-cavity are studied. A novel efficient four-channel wavelength division demultiplexer is proposed, which is based on the structure composed by a ring resonator and two micro-cavities. The device realizes the wavelength division demultiplexing with wavelengths of 1471, 1511, 1551, 1591 nm, and the size of the device is reduced significantly. The impact of the ring resonator center rods number and radius on the transmission spectrum is investigated using the finite difference time domain method. The results show that the ring resonator has multimode characteristic and it can adjust the resonance wavelength of the ring resonator by changing its center column radius. By using the micro-cavity frequency selective effect, the transmission rate of each channel reaches more than 90% and the channel isolations are over 20 dB. At the same time, it is simple and efficient, which has potential application value in the field of all optical communication integration.

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