Aksyuk Vladimir A
Opt Express. 2015 May 4;23(9):11404-11. doi: 10.1364/OE.23.011404.
A 2x2 Mach-Zehnder optical switch design with a footprint of 0.5 μm x 2.5 μm using nanomechanical gap plasmon phase modulators [Nat. Photonics 9(4),267-273(2015)] is presented. The extremely small footprint and modest optical loss are enabled by the strong phase modulation of gap plasmons in a mechanically actuated 17 nm air gap. Frequency-domain finite-element modeling at operating wavelength 780 nm shows that the insertion loss is ≤ 8.5 dB, the extinction ratio is > 25 dB, and crosstalk for all ports is > 24 dB. A design optimization approach and its dependence on geometrical parameters are discussed.
本文提出了一种采用纳米机械间隙等离子体相位调制器的2×2马赫-曾德尔光开关设计，其占地面积为0.5μm×2.5μm[《自然·光子学》9(4)，267 - 273(2015)]。通过在机械驱动的17nm气隙中对间隙等离子体进行强相位调制，实现了极小的占地面积和适度的光损耗。在工作波长780nm处的频域有限元建模表明，插入损耗≤8.5dB，消光比>25dB，所有端口的串扰>24dB。讨论了一种设计优化方法及其对几何参数的依赖性。
