Free-space optical cross-connect switch by use of electroholography
Benny PesachDepartment of Applied Physics and J. Krupnik is with the School of Engineering and Computer Science, The Hebrew University of Jerusalem, Jerusalem 91094, IsraelGuy BartalB. Pesach, G. Bartal, E. Refaeli, and A. J. Agranat ([email protected]) are with the Department of Applied Physics and J. Krupnik is with the School of Engineering and Computer Science, The Hebrew University of Jerusalem, Jerusalem 91094, Israel.D. Sadot is with the Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, IsraelEli RefaeliB. Pesach, G. Bartal, E. Refaeli, and A. J. Agranat ([email protected]) are with the Department of Applied Physics and J. Krupnik is with the School of Engineering and Computer Science, The Hebrew University of Jerusalem, Jerusalem 91094, Israel.D. Sadot is with the Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, IsraelAharon J. AgranatB. Pesach, G. Bartal, E. Refaeli, and A. J. Agranat ([email protected]) are with the Department of Applied Physics and J. Krupnik is with the School of Engineering and Computer Science, The Hebrew University of Jerusalem, Jerusalem 91094, Israel.D. Sadot is with the Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, IsraelJoel KrupnikB. Pesach, G. Bartal, E. Refaeli, and A. J. Agranat ([email protected]) are with the Department of Applied Physics and J. Krupnik is with the School of Engineering and Computer Science, The Hebrew University of Jerusalem, Jerusalem 91094, Israel.D. Sadot is with the Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, IsraelDan SadotB. Pesach, G. Bartal, E. Refaeli, and A. J. Agranat ([email protected]) are with the Department of Applied Physics and J. Krupnik is with the School of Engineering and Computer Science, The Hebrew University of Jerusalem, Jerusalem 91094, Israel.D. Sadot is with the Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
2000en
ABI
Аннотация
An electrically controlled holographic switch is proposed as a building block for a free-space optical interconnection network. The switch is based on the voltage-controlled photorefractive effect in KLTN crystals at the paraelectric phase. It is built of electrically controlled Bragg gratings stored in the volume of the crystal. A compact switch that connects four high-speed fiber-optic communication channels with high efficiency is demonstrated experimentally. The switch performance is investigated and optimized. This switch is extremely attractive for cascaded switching arrays such as those found in multistage interconnect networks.
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