#getConfInfo.name#
ThH1 - Free Space Optical Communications Session Presider: Rafael Rios Muller
8:30-10:00 Poinsettia/ Quince
ThH1.1 -
Optical Ground Terminals Using Multi-Aperture Digital Coherent Combining Invited
08:30-09:00
2017-10-05 08:30 2017-10-05 09:00 America/Denver Optical Ground Terminals Using Multi-Aperture Digital Coherent Combining We discuss an optical ground terminal receiver architecture based on multi-aperture digital coherent combining. Experimental results using four receivers demonstrate lossless coherent combining in the laboratory at power levels below 0.1-photons/bit/receiver, and mitigation of scintillation through a 3.2-km free-space link due to spatial diversity. Hilton Santa Fe Historic Plaza Poinsettia/ Quince

    D. Geisler , MIT Lincoln Laboratory, Lexington, MA, United States, T. Yarnall , MIT Lincoln Laboratory, Lexington, MA, United States C. Schieler , MIT Lincoln Laboratory, Lexington, MA, United States M. Stevens , MIT Lincoln Laboratory, Lexington, MA, United States B. Robinson , MIT Lincoln Laboratory, Lexington, MA, United States S. Hamilton , MIT Lincoln Laboratory, Lexington, MA, United States

    We discuss an optical ground terminal receiver architecture based on multi-aperture digital coherent combining. Experimental results using four receivers demonstrate lossless coherent combining in the laboratory at power levels below 0.1-photons/bit/receiver, and mitigation of scintillation through a 3.2-km free-space link due to spatial diversity.
ThH1.2 -
10 m Free Space 128Gbit/s Transmission via Self-injection Locked Quantum-dash Laser
09:00-09:15
2017-10-05 09:00 2017-10-05 09:15 America/Denver 10 m Free Space 128Gbit/s Transmission via Self-injection Locked Quantum-dash Laser Self-injection Locking is employed on L-band InAs/InP quantum-dash laser to lock a single Fabry-Perot mode with ~9dBm power and >30dB SMSR. Successful 128 Gbit/s DP-QPSK data transmission is demonstrated via this ~1607nm locked mode over a 10m indoor FSO channel exhibiting ~-17.5dBm receiver-sensitivity. Hilton Santa Fe Historic Plaza Poinsettia/ Quince

    M. Khan , ORL, KFUPM, Dhahran, Saudi Arabia, M. Shemis , ORL, KFUPM, Dhahran, Saudi Arabia E. Alkhazraji , Jubail Industrial College, Jubail, Saudi Arabia A. Ragheb , KACST-TIC for the e-Society, Riyadh, Saudi Arabia M. Esmail , KACST-TIC for the e-Society, Riyadh, Saudi Arabia H. Fathallah , King Saud University, King Saud University, Saudi Arabia S. Alshebeili , KACST-TIC for the e-Society, Riyadh, Saudi Arabia

    Self-injection Locking is employed on L-band InAs/InP quantum-dash laser to lock a single Fabry-Perot mode with ~9dBm power and >30dB SMSR. Successful 128 Gbit/s DP-QPSK data transmission is demonstrated via this ~1607nm locked mode over a 10m indoor FSO channel exhibiting ~-17.5dBm receiver-sensitivity.
ThH1.3 -
Physical-Layer Security in Optical Communications Enabled by Bessel Modes
09:15-09:30
2017-10-05 09:15 2017-10-05 09:30 America/Denver Physical-Layer Security in Optical Communications Enabled by Bessel Modes To address one of key problems for optical communication links, physical layer-security (PLS), Bessel modes are employed in proposed-PLS-scheme, significantly outperforming conventional schemes in secrecy capacity. Simulations indicate that atmospheric turbulence effects can help in improving security under beam-splitting attack. Hilton Santa Fe Historic Plaza Poinsettia/ Quince

    I. Djordjevic , ECE Dept, Univ. of Arizona, Tucson, AZ, United States, S. Zhang , NEC Labs, Princeton, NJ, United States

    To address one of key problems for optical communication links, physical layer-security (PLS), Bessel modes are employed in proposed-PLS-scheme, significantly outperforming conventional schemes in secrecy capacity. Simulations indicate that atmospheric turbulence effects can help in improving security under beam-splitting attack.
ThH1.4 -
Optimal Wavelength Selection for Entangled Quantum Key Distribution
09:30-09:45
2017-10-05 09:30 2017-10-05 09:45 America/Denver Optimal Wavelength Selection for Entangled Quantum Key Distribution We study an entangled QKD system using photons at 780nm, 1550nm and 4 um from a SPDC nonlinear crystal, over a 30km maritime channel. An analysis of the channel at each wavelength is performed and the QKD system is simulated for each wavelength. Hilton Santa Fe Historic Plaza Poinsettia/ Quince

    J. Gariano , The University of Arizona, Tucson, AZ, United States, I. Djordjevic , The University of Arizona, Tucson, AZ, United States T. Liu , North China Electric Power, Baoding, China

    We study an entangled QKD system using photons at 780nm, 1550nm and 4 um from a SPDC nonlinear crystal, over a 30km maritime channel. An analysis of the channel at each wavelength is performed and the QKD system is simulated for each wavelength.
ThH1.5 -
Analysis of Free-Space Coupling to Photonic Lanterns in the Presence of Tilt Errors
09:45-10:00
2017-10-05 09:45 2017-10-05 10:00 America/Denver Analysis of Free-Space Coupling to Photonic Lanterns in the Presence of Tilt Errors Free space coupling to photonic lanterns is more tolerant to tilt errors and F-number mismatch than coupling to single-mode fibers. We analyze the coupling efficiency to singlemode fiber, and 3-mode and 6-mode photonic lanterns in the presence of these errors. Hilton Santa Fe Historic Plaza Poinsettia/ Quince

    T. Yarnall , MIT Lincoln Laboratory, Lexington, MA, United States, D. Geisler , MIT Lincoln Laboratory, Lexington, MA, United States C. Schieler , MIT Lincoln Laboratory, Lexington, MA, United States R. Yip , Massachusetts Institue of Tech, Cambridge, MA, United States

    Free space coupling to photonic lanterns is more tolerant to tilt errors and F-number mismatch than coupling to single-mode fibers. We analyze the coupling efficiency to singlemode fiber, and 3-mode and 6-mode photonic lanterns in the presence of these errors.