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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 24 — Nov. 22, 2010
  • pp: 25225–25231

Submilliwatt, ultrafast and broadband electro-optic silicon switches

Po Dong, Shirong Liao, Hong Liang, Roshanak Shafiiha, Dazeng Feng, Guoliang Li, Xuezhe Zheng, Ashok V. Krishnamoorthy, and Mehdi Asghari  »View Author Affiliations

Optics Express, Vol. 18, Issue 24, pp. 25225-25231 (2010)

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We present a broadband 2x2 electro-optic silicon switch with an ultralow switching power and fast switching time based on a Mach-Zehnder interferometer (MZI). Forward-biased p-i-n junctions are employed to tune the phase of silicon waveguides in the MZI, to achieve a π-phase switching power of 0.6 mW with a drive voltage 0.83 V with a MZI arm length of 4 mm. The 10%-90% switching time is demonstrated to be 6 ns. Optical crosstalk levels lower than −17 dB are obtained for an optical bandwidth of 60 nm. The free carrier induced silicon refractive index change is extracted from the experimental results for the concentration range from 1016 to 1017 cm−3. We find that at the concentration of 1016 cm−3, the index change is about twice that calculated by the commonly used index change equation.

© 2010 OSA

OCIS Codes
(200.4650) Optics in computing : Optical interconnects
(230.3120) Optical devices : Integrated optics devices
(130.4815) Integrated optics : Optical switching devices
(250.6715) Optoelectronics : Switching

ToC Category:
Integrated Optics

Original Manuscript: September 21, 2010
Revised Manuscript: November 9, 2010
Manuscript Accepted: November 10, 2010
Published: November 17, 2010

Po Dong, Shirong Liao, Hong Liang, Roshanak Shafiiha, Dazeng Feng, Guoliang Li, Xuezhe Zheng, Ashok V. Krishnamoorthy, and Mehdi Asghari, "Submilliwatt, ultrafast and broadband electro-optic silicon switches," Opt. Express 18, 25225-25231 (2010)

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  1. R. A. Soref, “The past, present and future of silicon photonics,” IEEE J. Sel. Top. Quant. Electron. 12(6), 1678–1687 (2006). [CrossRef]
  2. L. C. Kimerling and ., “Electronic–photonic integrated circuits on the CMOS platform,” Proc. SPIE 6125, 6–15 (2006).
  3. B. Jalali, M. Paniccia, and G. Reed, “Silicon photonics,” IEEE Microw. Mag. 7(3), 58–68 (2006). [CrossRef]
  4. D. A. B. Miller, “Device requirements for optical interconnects to silicon chips,” Proc. IEEE 97, 1166–1185 (2009). [CrossRef]
  5. A. V. Krishnamoorthy, R. Ho, X. Zheng, H. Schwetman, J. Lexau, P. Koka, G. Li, I. Shubin, and J. E. Cunningham, “Computer systems based on silicon photonic interconnects,” Proc. IEEE 97, 1337–1361 (2009). [CrossRef]
  6. A. Shacham, K. Bergman, and L. P. Carloni, “Photonic networks-on-chip for future generations of chip multiprocessors,” IEEE Trans. Comput. 57(9), 1246–1260 (2008). [CrossRef]
  7. J. Ahn, M. Fiorentino, R. G. Beausoleil, N. Binkert, A. Davis, D. Fattal, N. P. Jouppi, M. McLaren, C. M. Santori, R. S. Schreiber, S. M. Spillane, D. Vantrease, and Q. Xu, “Devices and architectures for photonic chip-scale integration,” Appl. Phys., A Mater. Sci. Process. 95(4), 989–997 (2009). [CrossRef]
  8. C. Batten, A. Joshi, J. Orcutt, A. Khilo, B. Moss, C. W. Holzwarth, M. A. Popovic, H. Li, H. I. Smith, J. L. Hoyt, F. X. Kartner, R. J. Ram, V. Stojanovic, and K. Asanovic, “Building Many-Core Processor-to-DRAM Networks with Monolithic CMOS Silicon Photonics,” IEEE Micro 29(4), 8–21 (2009). [CrossRef]
  9. P. Dong, S. F. Preble, and M. Lipson, “All-optical compact silicon comb switch,” Opt. Express 15(15), 9600–9605 (2007). [CrossRef] [PubMed]
  10. B. G. Lee, A. Biberman, P. Dong, M. Lipson, and K. Bergman, “All-optical comb switch for multiwavelength message routing in silicon photonic networks,” IEEE Photon. Technol. Lett. 20(10), 767–769 (2008). [CrossRef]
  11. Y. Vlasov, W. M. J. Green, and F. Xia, “High-throughput silicon nanophotonic wavelength-insensitive switch for on-chip optical networks,” Nat. Photonics 2(4), 242–246 (2008). [CrossRef]
  12. P. Sun and R. M. Reano, “Submilliwatt thermo-optic switches using free-standing silicon-on-insulator strip waveguides,” Opt. Express 18(8), 8406–8411 (2010). [CrossRef] [PubMed]
  13. Y. Shoji, K. Kintaka, S. Suda, H. Kawashima, T. Hasama, and H. Ishikawa, “Low-crosstalk 2 x 2 thermo-optic switch with silicon wire waveguides,” Opt. Express 18(9), 9071–9075 (2010). [CrossRef] [PubMed]
  14. J. Van Campenhout, W. M. Green, S. Assefa, and Y. A. Vlasov, “Low-power, 2 x 2 silicon electro-optic switch with 110-nm bandwidth for broadband reconfigurable optical networks,” Opt. Express 17(26), 24020–24029 (2009). [CrossRef]
  15. B. G. Lee, J. Van Campenhout, A. V. Rylyakov, C. L. Schow, W. M. J. Green, S. Assefa, M. Yang, F. E. Doany, C. V. Jahnes, R. A. John, J. A. Kash, and Y. A. Vlasov, “Broadband silicon photonic switch integrated with CMOS drive electronics,” in Proceedings of Conference on Quantum electronics and Laser Science Conference (CLEO/QELS 2010), paper CThJ1.
  16. P. Dong, S. Liao, D. Feng, H. Liang, D. Zheng, R. Shafiiha, C.-C. Kung, W. Qian, G. Li, X. Zheng, A. V. Krishnamoorthy, and M. Asghari, “Low Vpp, ultralow-energy, compact, high-speed silicon electro-optic modulator,” Opt. Express 17(25), 22484–22490 (2009). [CrossRef]
  17. R. A. Soref and B. R. Bennett, “Electrooptical effects in silicon,” IEEE J. Quantum Electron. 23(1), 123–129 (1987). [CrossRef]
  18. L. S. Yu, Q. Z. Liu, Z. F. Guan, and S. S. Lau, “Direct measurement of the refractive index change of silicon with optically injected carriers,” Appl. Phys. Lett. 68(11), 1546 (1996). [CrossRef]

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