Investigation on Two-Dimensional Photonic Crystal Self-Collimation Splitting Sensor

Investigation on Two-Dimensional Photonic Crystal Self-Collimation Splitting Sensor

A self-collimation splitting sensor truncated in a two-dimensional (2D) photonic crystal has been proposed and demonstrated theoretically. Intensity of transmitted light and reflected light, which varies with the width of the splitter, is detected at two output ports. Calculation results validated b...

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Veröffentlicht in:Key engineering materials 2010-01, Vol.428-429, p.367-371
Hauptverfasser: Zhang, Jian Feng, Chen, Xi Yao, Su, Yu Xia, Liang, Xiong, Qiu, Hui Ye, Wang, Yu Fei, Lai, Guo Zhong, Lin, Fu Zhong
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container_end_page 371
container_issue
container_start_page 367
container_title Key engineering materials
container_volume 428-429
creator Zhang, Jian Feng
Chen, Xi Yao
Su, Yu Xia
Liang, Xiong
Qiu, Hui Ye
Wang, Yu Fei
Lai, Guo Zhong
Lin, Fu Zhong
description A self-collimation splitting sensor truncated in a two-dimensional (2D) photonic crystal has been proposed and demonstrated theoretically. Intensity of transmitted light and reflected light, which varies with the width of the splitter, is detected at two output ports. Calculation results validated by the 2D finite-difference time-domain technique show that with the increase of width, the transmittivity decreases while the reflectivity increases and their summation decreases. Considering the trade-off between the sensitivity of the optical detector and the loss of power, including the difficulty of fabrication, the width of 0.4a is meet for the sensor. The simulated relative intensity monotonously increases from 1.63 to 2.94 nonlinearly.
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