direct detection
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2022 ◽  
Vol 105 (2) ◽  
Author(s):  
Roberta Calabrese ◽  
Marco Chianese ◽  
Damiano F. G. Fiorillo ◽  
Ninetta Saviano

2022 ◽  
Author(s):  
Haide Wang ◽  
Ji Zhou ◽  
Jinlong Wei ◽  
Wenxuan Mo ◽  
Yuanhua Feng ◽  
...  

<div>We experimentally demonstrate a C band 100Gbit/s intensity modulation and direct detection entropy-loaded multi-rate Nyquist-subcarrier modulation signal over 100km dispersion-uncompensated link. A record capacity-reach of 10Tbit/s×km is achieved.</div>


2022 ◽  
Vol 128 (1) ◽  
Author(s):  
P. Adhikari ◽  
R. Ajaj ◽  
M. Alpízar-Venegas ◽  
D. J. Auty ◽  
H. Benmansour ◽  
...  

2022 ◽  
Author(s):  
Haide Wang ◽  
Ji Zhou ◽  
Jinlong Wei ◽  
Wenxuan Mo ◽  
Yuanhua Feng ◽  
...  

<div>We experimentally demonstrate a C band 100Gbit/s intensity modulation and direct detection entropy-loaded multi-rate Nyquist-subcarrier modulation signal over 100km dispersion-uncompensated link. A record capacity-reach of 10Tbit/s×km is achieved.</div>


Photonics ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 32
Author(s):  
Kehinde O. Odeyemi ◽  
Pius A. Owolawi

In this paper, the secrecy performance of a mixed free space optical (FSO)/radio frequency (RF) integrated satellite-high altitude platform (HAP) relaying networks for terrestrial multiusers with the existence of an eavesdropper is investigated. In this network, FSO is adopted to establish the link between the satellite and HAP for which it experiences Gamma-Gamma distributions under different detection schemes (i.e., heterodyne and intensity modulation direct detection). The transmission between the amplify-and-forward (AF) relaying HAP and terrestrial multiusers is through the RF and is modeled as shadowed-Rician fading distribution. Owning to broadcasting nature of RF link, it is assumed that an eavesdropper attempts to intercept the users’ confidential message, and the eavesdropper link is subjected to Rician distributions. Specifically, the closed-form expression for the system equivalent end-to-end cumulative distribution function is derived by exploiting the Meijer’s G and Fox’s H functions. Based on this expression, the exact closed-form expressions of the system connection outage probability, secrecy outage probability, and strictly positive secrecy capacity are obtained under the different detection schemes at HAP. Moreover, the asymptotic analyze of the system secrecy outage probability is provided to obtain more physical insights. Furthermore, the accuracy of all the derived analytical closed-form expressions is verified through the Monte-Carlo simulations. In addition, the impact of atmospheric turbulence, pointing errors, shadowing severity parameters, and Rician factor are thoroughly evaluated. Under the same system conditions, the results depict that heterodyne detection outperforms the intensity modulation direct detection.


2022 ◽  
pp. 127906
Author(s):  
Dongxu Lu ◽  
Bismark Boateng ◽  
Xian Zhou ◽  
Jiahao Huo ◽  
Fei Liu ◽  
...  
Keyword(s):  

2022 ◽  
pp. 1-1
Author(s):  
Xiaoyu Zhang ◽  
Thien Van Luong ◽  
Periklis Petropoulos ◽  
Lajos Hanzo

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