LEO SPACE PHOTONICS
Integrated coherent receivers
Coherent optical functions on-chip
We develop silicon photonic integrated coherent receiver circuits for high-capacity laser communications. Optical couplers, an MMI hybrid, Ge photodiodes and SiGe BiCMOS electronics are brought together in a compact architecture.
In the ORIONAS programme, LEO Space Photonics and its partners demonstrated more than 100 Gb/s coherent detection of single-polarization QPSK signals.
patented technology
Patented integrated coherent receiver architecture
LEO Space Photonics is the assignee of US Patent 12,598,003 B2, covering a coherent receiver photonic integrated circuit with a single multimode interference (MMI) optical hybrid, non-intersecting optical paths and uniform electrical connections.
optical hybrid
Single MMI coupler
A single MMI coupler acts as the 90-degree optical hybrid for mixing the received signal with a local oscillator.
WAVEGUIDE ROUTING
Non-intersecting paths
Four waveguides route hybrid outputs to four photodetectors without crossings.
ELECTRICAL OUTPUT
Balanced detection
Four on-chip Ge photodetectors form two balanced pairs with uniform electrical paths leading to the TIA circuits.
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ls@leo-sprd.eu
LEO SPACE PHOTONICS
Optical transceivers for high-speed, harsh-environment interconnects
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Contact
ls@leo-sprd.eu
27 Neapoleos Street
Lefkippos Technology Park
Agia Paraskevi, 15341
Athens, Greece