AI Article Synopsis
- Researchers propose a new method for free-space optical communication that uses few-mode pre-amplified receivers to counteract the effects of turbulence.
- The technique involves breaking down distorted light waves into simpler modes, which allows for improved signal clarity.
- Experimental results show that these few-mode receivers offer better sensitivity and reliability compared to traditional single-mode systems, even without advanced adaptive optics.
Article Abstract
Leveraging recent advances in space-division multiplexing, we propose and demonstrate turbulence-resistant free-space optical communication using few-mode (FM) pre-amplified receivers. The rationale for this approach is that a distorted wavefront can be decomposed into a superposition of the fundamental Gaussian mode and high-order modes of a few-mode fiber. We present the noise statistics and the sensitivity of the FM pre-amplified receiver, followed by experimental and numerical comparisons between FM pre-amplified receivers and single-mode (SM) pre-amplified receivers with or without adaptive optics. FM pre-amplified receivers for FSO can achieve high sensitivity, simplicity and reliability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6838458 | PMC |
| http://dx.doi.org/10.1038/s41598-019-52698-1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The low noise figure of phase-sensitive amplifiers (PSAs) is attractive for optically pre-amplified measurement and communication systems. However, a major practical implementation difficulty pertains to the requirement of phase-locked signal, idler, and pump waves. Previously, injection locking to a co-propagating weak pump pilot or tapping portions of the received signal (lossy) for carrier re-generation have been used.
View Article and Find Full Text PDFWe experimentally demonstrate the real-time 100/200/400 Gb/s/λ coherent passive optical networks (PONs) based on silicon photonic integrated transceiver. We investigate different configuration schemes of coherent PONs including: (1) using a Erbium doped optical fiber amplifier (EDFA) as a booster at the transmitter side; (2) using a semiconductor optical amplifier (SOA) as a booster at the transmitter side; (3) using EDFA at the transmitter side and a pre-amplified SOA at receiver side; (4) using an SOA at the transmitter side and an SOA at the receiver side. The performance of these schemes for different data rates of downstream transmission is evaluated, and the appropriate choices under different circumstances are analyzed.
View Article and Find Full Text PDFOne photon-per-bit receiver using near-noiseless phase-sensitive amplification.
Light Sci Appl
September 2020
Photonics Laboratory, Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, 412-96 Gothenburg, Sweden.
Space communication for deep-space missions, inter-satellite data transfer and Earth monitoring requires high-speed data connectivity. The reach is fundamentally dictated by the available transmission power, the aperture size, and the receiver sensitivity. A transition from radio-frequency links to optical links is now seriously being considered, as this greatly reduces the channel loss caused by diffraction.
View Article and Find Full Text PDFTurbulence-Resistant FSO Communication Using a Few-Mode Pre-Amplified Receiver.
Sci Rep
November 2019
CREOL, The College of Optics & Photonics, University of Central Florida, Orlando, FL, 32816, USA.
Article Synopsis
- Researchers propose a new method for free-space optical communication that uses few-mode pre-amplified receivers to counteract the effects of turbulence.
- The technique involves breaking down distorted light waves into simpler modes, which allows for improved signal clarity.
- Experimental results show that these few-mode receivers offer better sensitivity and reliability compared to traditional single-mode systems, even without advanced adaptive optics.
We report InAs/InGaAs quantum dot (QD) waveguide photodetectors (PD) monolithically grown on silicon substrates. A high-crystalline quality GaAs-on-Si template was achieved by aspect ratio trapping together with the combined effects of cyclic thermal annealing and strain-balancing layer stacks. An ultra-low dark current of 0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!