SESHG S/P Converter

A Surface-Emitted Second-Harmonic Generation (SESHG) Based Demultiplexer for Ultrafast Optical Communications

The Ultrafast Optical Communications Group is developing an optical demultiplexer to be used in a >100 Gb/s optically time-division multiplexed link to recover the original low-data-rate channels from the single high-data-rate bit stream. The mechanism used to perform the demultiplexing operation is surface-emitted second-harmonic generation (SESHG) in AlGaAs waveguides. Once limited by low conversion efficiencies, SESHG has received renewed interest in recent years due to new multilayer and resonant cavity geometries that allow greatly enhanced efficiencies. By making use of these new geometries in combination with optical preamplification, demultiplexing of the individual low-data-rate channels with an acceptable bit-error rate should be possible. Also, this scheme can provide self-timed operation and access to all of the demultiplexed channels with a single device, instead of requiring a separate device for each desired channel.

Publications & Presentations

T. G. Ulmer, M. C. Gross, K. M. Patel, B. R. Washburn, W. S. Astar, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Optical time-division demultiplexing with resonant-cavity-enhanced surface-emitted second-harmonic generation," 1999 Annual Meeting of the Optical Society of America, Santa Clara, CA, Sept. 26-30, 1999.

T. G. Ulmer, M. C. Gross, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, A. J. SpringThorpe, R. P. Kenan, C. M. Verber, and S. E. Ralph, “Ultrafast optical devices for high-speed optical data links,” Materials and Devices for Photonic Circuits, SPIE 44th annual meeting, Denver, CO, July 21-22, 1999.

T. G. Ulmer, R.K. Tan, Z. Zhou, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, "Two-photon absorption-induced self-phase modulation in GaAs-AlGaAs waveguides for surface-emitted second-harmonic generation,” Opt. Lett., vol. 24, no. 11, June 1, 1999.

T. G. Ulmer, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Optical time-division demultiplexing with surface-emitted second-harmonic generation,” proceedings from the1999 Conference on Lasers and Electro-Optics (CLEO), Baltimore, MD, May 23-28, 1999, p. 377.

T. G. Ulmer, R.K. Tan, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, Z. Zhou, S. E. Ralph, C.M. Verber, R. P. Kenan, and A. J. SpringThorpe, “Progress towards a surface-emitted second-harmonic generation-based demultiplexer for optically time-division multiplexed communications,” 1998 Annual Meeting of the Optical Society of America, Baltimore, MD, Oct. 4-9, 1998.

C. M. Verber, Jinkee Kim, Ronson Tan, Yuan-Ning Weng and Zhiping Zhou, "Progress toward the development of a 100 Gb/s optical data link", Proc. SPIE, vol. 2481, pp. 36-45, April 1995.

Ronson K. Tan, C. M. Verber and A. J. Springthorpe, "Integrated-Optical Serial-to-Parallel Converter for 100 Gb/s time demultiplexing", Photonic Tech. Lett., vol. 6, pp. 1228-1231, Oct. 1994.

		T. G. Ulmer, M. C. Gross, K. M. Patel, B. R. Washburn, W. S. Astar, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Optical time-division demultiplexing with resonant-cavity-enhanced surface-emitted second-harmonic generation," 1999 Annual Meeting of the Optical Society of America, Santa Clara, CA, Sept. 26-30, 1999.

		T. G. Ulmer, M. C. Gross, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, A. J. SpringThorpe, R. P. Kenan, C. M. Verber, and S. E. Ralph, “Ultrafast optical devices for high-speed optical data links,” Materials and Devices for Photonic Circuits, SPIE 44th annual meeting, Denver, CO, July 21-22, 1999.

		T. G. Ulmer, R.K. Tan, Z. Zhou, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, "Two-photon absorption-induced self-phase modulation in GaAs-AlGaAs waveguides for surface-emitted second-harmonic generation,” Opt. Lett., vol. 24, no. 11, June 1, 1999.

		T. G. Ulmer, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Optical time-division demultiplexing with surface-emitted second-harmonic generation,” proceedings from the1999 Conference on Lasers and Electro-Optics (CLEO), Baltimore, MD, May 23-28, 1999, p. 377.

		T. G. Ulmer, R.K. Tan, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, Z. Zhou, S. E. Ralph, C.M. Verber, R. P. Kenan, and A. J. SpringThorpe, “Progress towards a surface-emitted second-harmonic generation-based demultiplexer for optically time-division multiplexed communications,” 1998 Annual Meeting of the Optical Society of America, Baltimore, MD, Oct. 4-9, 1998.

		C. M. Verber, Jinkee Kim, Ronson Tan, Yuan-Ning Weng and Zhiping Zhou, "Progress toward the development of a 100 Gb/s optical data link", Proc. SPIE, vol. 2481, pp. 36-45, April 1995.

		Ronson K. Tan, C. M. Verber and A. J. Springthorpe, "Integrated-Optical Serial-to-Parallel Converter for 100 Gb/s time demultiplexing", Photonic Tech. Lett., vol. 6, pp. 1228-1231, Oct. 1994.

For more information, contact Marc Hanna at gt0360c@prism.gatech.edu.

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