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2.5- and 5-Gbps time-delay self-homodyne interference differential phase-shift keying optical receiver for space-to-ground communication link
- Source :
- Optical Engineering. 58:1
- Publication Year :
- 2019
- Publisher :
- SPIE-Intl Soc Optical Eng, 2019.
-
Abstract
- The availability and reliability of the high data rate space-to-ground optical coherent communication links are critically challenged because the wave front of the signal beam is distorted and impaired when propagating through atmospheric turbulence. Based on the free-space interference of two successive data bits delayed by an unequal-arm-length Mach–Zehnder interferometer (MZI), a pupil-matching time-delay self-homodyne interference differential phase-shift keying (DPSK) optical receiver with 2 × 4 90-deg optical hybrid is designed for the high data rate space-to-ground optical communication links due to its immunity from wave front impairment. The delayed optical path difference (OPD) in the unequal-arm-length MZI corresponds to the duration of one bit and can be stabilized to below 1000th of the wavelength by the closed-loop feedback control. The maximum system insertion loss is
- Subjects :
- Physics
business.industry
General Engineering
Optical communication
Physics::Optics
02 engineering and technology
01 natural sciences
Atomic and Molecular Physics, and Optics
010309 optics
Direct-conversion receiver
Interferometry
020210 optoelectronics & photonics
Optics
Interference (communication)
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
business
Adaptive optics
Optical path length
Free-space optical communication
Phase-shift keying
Subjects
Details
- ISSN :
- 00913286
- Volume :
- 58
- Database :
- OpenAIRE
- Journal :
- Optical Engineering
- Accession number :
- edsair.doi...........d0eb229f6b65f181293a433535be8fd2