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DTSTART:20230312T070000
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DTSTART:20221106T060000
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UID:69d31e575788e
DTSTART;TZID=America/Toronto:20231019T160000
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URL:https://uwaterloo.ca/institute-for-quantum-computing/events/optical-gro
 und-station-oberpfaffenhofen-next-generation
LOCATION:QNC - Quantum Nano Centre 200 University Avenue West 0101 Waterloo
  ON N2L 3G1 Canada
SUMMARY:Optical Ground Station Oberpfaffenhofen Next Generation: first\nsat
 ellite link tests with 80 cm telescope and AO system
CLASS:PUBLIC
DESCRIPTION:IQC SEMINAR - JOHANNES PRELL\, INSTITUTE OF COMMUNICATION AND\n
 NAVIGATION\, OSL GERMAN AEROSPACE CENTER (DLR) OBERPFAFFENHOFEN\,\nGERMANY
 \n\nQuantum Nano Centre (QNC) Room 0101 200 University Ave West\, Waterloo
 \nOntario\n\nSatellite based laser communication technology both classical
  and QKD\n(Q uantum K ey D istribution is gaining popularity and being\nin
 creasingly commercial i zed . Optical ground stations serve as the\nreceiv
  ing station in satellite to ground scenarios. The DLR institute\nof Commu
 nications and Navigation hosts an experimental optical ground\nstation for
  research and demonstration purpose. Supporting\nincreasingly demanding te
 chnical requirements from current and futu re\nmissions and technology dem
 onstrations\, it was decided to replace the\n40cm Cassegrain telescope an 
 equip the new one with Nasmyth Ports for\ndirect experiments\, a Coudé Pa
 th to the lab and an Adaptive Optics\nSystem . This new 80cm (31.5inch) ma
 in apertur e diameter i nstrument\nis a Nasmyth Design Ritchey Chretien te
 lescope The special feature is\nthe C oudé P ath which is guiding the rec
 eived light onto an optical\ntable in a lab oratory room below the telesco
 pe mount (see figure 1\nThe usage of the Coudé Path is new implemented at
  DLR and offers a\nwide possibility for several different experiments with
  the same setup\nThe optical propaga tion through a custom designed lens s
 ystem inside\nthe coudé path is optimized for wavelength s used for optic
 al\ncommunication\, like 589nm\, 850nm\, 1064nm and 1550nm. It is possible
  to\nuse the setup as a receiving station and also as a transmitting\nfaci
 lity f or beacon lasers . The transmitt ing system ca n be\ninstalled eith
 er beside the telescope as a side installation or even\nlaunched from the 
 optical table through coudé path and telescope\ndirectly\n\nThe optical E
 xperiment table in the lab is equipped with an Adaptive\nOptics ( System i
 ncluding fibe r coupling. This system uses a Shack\nHartmann Wave front se
 nsor\, designed to match a deformable mirror in\nthe “ f ried g eometry
 ”. The system couples the light into a\nsingle mode fibe r \, which can 
 be con nected to a coherent or Quantum\nencrypted communications system. [
  The telescope itself has four\nusable Nasmyth ports The first one is rese
 rved for the coudé pa th\, t\nwo others are equipped with optical benches
  directly on the telescope\,\nand on the last one has a fixed classical la
 ser communication\nreceiving setup including two cameras one visible light
  and one infra\nred and a signal receiving united is installed References\
 n\n[1] Andrew Paul Reeves\, Ilija R. Hristovski\, Alexandru Octavian Duliu
 \,\nStefanie H äu sler\, Hela Friew Kelemu\, Pia Lützen\, Florian Moll\,
 \nEltimir Peev\, Juraj Poliak\, Amita Shrestha\, Joana Sul Torres\; Adapti
 ve\nOptics Corrected Bi Directional Links with a Geo Stationary Satellite\
 nfrom the DLR KN Optical Ground Station Figure 1 OGSOP System Overvi ew
DTSTAMP:20260406T024543Z
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