Design and Numerical Studies of Annular Line Defect Photonic Crystal Filter

Qing-bin, 范庆斌 Fan; Chuanqi, 李传起 Li; Xiurong, 张秀容 Zhang; Mengjie, 杨梦婕 Yang

doi:10.3788/lop52.012301

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“…射波导邻近放置，通过调整耦合波导的长度和耦合介质柱的参数来实现 [8] [9][10] 。Kumar 等 [11] 为了提高耦合效率，采用在光子晶体中嵌入环形谐振腔的方法，成功将主波导中的光波完全局域在环形谐振腔中。Djavid 等 [12] 分析了环形谐振腔各参数对光波传输的影响，并采用光子晶体异质…”

Section: -unclassified

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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Section: -unclassified