To demonstrate (benchtop experiment) a DPSK receiver with a free-space interferometer, showing that fiber-optic coupling, associated adaptive optics, and optical preamplification can be avoided, with potential large cost savings; To rigorously quantify the performance (capacity and photon-budget) tradeoff between conventional (adaptive optics + optical preamplification) systems and our proposed free-space photon-counting-array approach; To develop extensions to orthogonal phase-modulated signaling over multiple symbols and associated photon-counting receiver structures, which enable approaching the photon efficiency of high-order pulse position modulation.More »
Results from a successful bench-top demonstration would enable infusion into near-Earth and terrestrial communication links in development that utilize DPSK modulation (e.g., NASA LCRD, DARPA FOENEX, other DoD applications). Removing requirement for AO would provide a significant reduction in cost of a DPSK system, putting JPL at a competitive advantage in bidding for free-space DPSK. Successful implementation of multiple-symbol phase-shift-keying would represent a breakthrough in practical implementation of low duty-cycle modulations, providing performance and SWAP gains.More »
|Organizations Performing Work||Role||Type||Location|
|Jet Propulsion Laboratory (JPL)||Lead Organization||NASA Center||Pasadena, CA|
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