A high‐speed long‐haul wavelength division multiplexing–based inter‐satellite optical wireless communication link using spectral‐efficient 2‐D orthogonal modulation scheme

Abstract

Summary In this work, we propose a novel multi‐bit/symbol spectral‐efficient optical orthogonal modulation scheme based on simultaneously modulating differential quadrature phase shift keying (DQPSK)‐polarization shift keying (PolSK) in a 16‐channel wavelength division multiplexing (WDM)‐based inter‐satellite optical wireless communication (IsOWC) system. Through numerical simulations, we demonstrate a reliable transportation of 16 × 100 Gbps information over 25 000 km of transmission range with acceptable bit error rate (BER) using the proposed system. Further, the impact of space turbulences (ie, pointing error losses) on the BER performance of the proposed IsOWC link has been evaluated using numerical simulations. The simulation results report a successful transportation of information up to 2.7 μrad receiver pointing error angle with acceptable performance.

Machine learning‐based predictive modeling for failure management of optical spatial mode division multiplexing system

“…It is therefore becoming necessary to remove such points from the model to bring significant change in model statistics and make a model much more efficient than the later one. In the process of linear regression analysis, outliers or the extreme values are likely to create issues in estimation 40–42 . Some of these high leverage values often tend to create aberrations in the residuals along with bias in the estimator.…”

“…In the process of linear regression analysis, outliers or the extreme values are likely to create issues in estimation. [40][41][42] Some of these high leverage values often tend to create aberrations in the residuals along with bias in the estimator. So, it is very much necessary to recognize such influential points in a given data.…”

Reach Enhanced Is-OWC System using Double Sideband Suppressed (DSS) DP-QPSK

“…Wavelength division multiplexing of 16 channels at a data rate of 20 Gbps is employed using polarization diversity and MDRZ modulation and analysis in terms of BER and Q factor is observed, polarization diversity is introduced to reduce interference and observe using eye diagram [4]. Wavelength division multiplexing of 16 channels at a data rate of 100 Gbps using modulation scheme DQPSK is introduced and a link distance of 25000 km is successfully achieved at an acceptable BER [7]. Performance analysis of Is-OWC system at a distance of 5000km between 2 satellites in low earth orbit for 16 transceiver system is observed [8].…”

AlGaInP optical source integrated with fiber links and silicon avalanche photo detectors in fiber optic systems

“…At the receiver end, the optical signals are detected and converted back into electrical signals by a light sensitive device known as a light detector or a photodetector (PD) like avalanche photodetector (APD) [16]- [23] The optical transmitter unit is a transducer. It is composed of optical source and the driver circuit [24]- [27]. It converts the electrical input signals into corresponding light signals and launches them into the optical fiber.…”