[1] Y. Chen, S. T. Ho, V. Krishnamurthy. All-optical switching in a symmetric three-waveguide coupler with phase-mismatched central waveguide. Appl. Opt., 52, 8845-8853(2013).

[2] http://optics.synopsys.com/rsoft/rsoft-passive-device-beamprop.html. http://optics.synopsys.com/rsoft/rsoft-passive-device-beamprop.html

[3] R. A. Soref, L. Friedman. Electrooptical modulation in Si1-xGex/Si and related heterostructures. Int. J. Optoelectron., 9, 205-210(1994).

[4] M. Nedeljkovic, R. Soref, G. Z. Mashanovich. Free-carrier electrorefraction and electroabsorption modulation predictions for silicon over the 1–14  μm infrared wavelength range. IEEE Photon. J., 3, 1171-1180(2011).

[5] M. Nedeljkovic, R. Soref, G. Z. Mashanovich. Predictions of free-carrier electroabsorption and electrorefraction in Germanium.

[6] R. A. Soref, D. L. McDaniel, B. R. Bennett. Guided-wave intensity modulators using amplitude and phase perturbations. IEEE J. Lightwave Technol., LT-6, 437-443(1988).

[7] X. Yang, F. Cheng, R. Soref. Single-mode GeSn mid-infrared waveguides on group-IV substrates. Conference on Lasers and Electro-Optics, JTh2A(2014).

[8] O. D. Herrera, R. Himmelhuber, K. J. Kim, R. A. Norwood, N. N. Peyghambarian. Silicon/electro-optic polymer hybrid directional coupler switch. SPIE Photonics West, Opto Conferences, 8991-24(2014).

[9] X. Zhang, A. Hosseini, J. Luo, A. Jen, R. T. Chen. Hybrid silicon-electro-optic-polymer integrated high-performance optical modulator. SPIE Photonics West, Opto Conferences, 8991-22(2014).

[10] L. Pavesi, R. A. Soref, L. Vivien. Electro-refraction effects. Handbook of Silicon Photonics(2013).

[11] I. Avrutsky, R. Soref, W. Buchwald. Sub-wavelength plasmonic modes in a conductor-gap-dielectric system with a nanoscale gap. Opt. Express, 18, 348-363(2010).

[12] C. Ye, Z. Li, R. Soref, V. J. Sorger. A compact plasmonic MOS-based electro-optic switch. IEEE Microwave Photonics Conference, WP-29(2013).

[13] V. J. Sorger, Z. Li, C. Ye, C. Huang, R. Soref. Ultra-compact plasmonic MOS-based electro-optic switches and modulators. SPIE Photonics West OPTO Conference, 8984-6(2014).

[14] J. Hendrickson, R. Soref, J. Sweet, W. Buchwald. Ultrasensitive silicon photonic-crystal nanobeam electro-optical modulator: design and simulation. Opt. Express, 22, 3271-3283(2014).