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Averaging of phase noise in PSK signals by an opto-electrical feed-forward circuit |
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| Affiliation: | 1. Institute of Photonic Technology IPHT, Albert-Einstein-Str. 9, 07745 Jena, Germany;2. Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074 Aachen, Germany;1. Physics Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran;2. Iranian National Center for Laser Science and Technology, P.O. Box 14665-576, Tehran, Iran;1. Shenzhen Key Laboratory of Laser Engineering, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China;2. College of Information Engineering, Shenzhen University, Shenzhen 518060, China |
| Abstract: | This paper proposes an opto-electrical feed-forward circuit that reduces phase noise in binary PSK signals by averaging the noise. Random and independent phase noise is averaged over several bit slots by externally modulating a phase-fluctuating PSK signal with feed-forward signal obtained from signal processing of the outputs of delay interferometers. The simulation results demonstrate a reduction in the phase noise. |
| Keywords: | Phase-shift keying Noise reduction Phase noise Feed-forward control |
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