期刊
OPTICS COMMUNICATIONS
卷 284, 期 9, 页码 2292-2297出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2011.01.008
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资金
- National Natural Science Foundation of China [60625404, 10974261]
We propose a cross-connection and a T-connection in periodic dielectric waveguides (PDWs) with ultrasmall size and high transmission efficiency at lambda = 1.55 mu m. The cross-connection was formed by introducing a 3 x 3 square dielectric resonant cavity at the cross-junction with a crosstalk of less than 0.8% (about -21 dB) and a transmission of larger than 93% at the desired output port. The T-connection was formed by introducing a 3 x 5 dielectric resonant cavity with modifications at the T-junction. The total transmission is up to 95%. In addition, different power splitting ratios were also achieved by moving the input waveguide of the T-connection with different displacements. (C) 2011 Elsevier B.V. All rights reserved.
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