High Speed Inter-Satellite Communication System by Incorporating Hybrid Polarization-Wavelength Division Multiplexing Scheme

Chaudhary, Sushank; Chaudhary, Neha; Sharma, Saurabh; Choudhary, B. C

doi:10.1515/joc-2016-0107

Cited by 28 publications

(13 citation statements)

References 9 publications

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“…As Figure 1 shows, some reflected light will be mixed within the received light. We could consider separate the mixed light beams by polarization splitting [11,12]. However, in practice, polarizing splitter cannot separate the two light completely.…”

Section: The Beacon-less Is-owc System Descriptionmentioning

confidence: 99%

Method to Measure Light Spot Position in Beacon-Less Inter-Satellite Communication System

et al. 2019

Applied Sciences

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This article focuses on a beacon-less Inter-satellite optical wireless communication (Is-OWC) system. This system uses the same wavelength for the transmitted and received laser beams and uses part of communication light beam as beacon light instead of an additional high divergent beacon laser. Thus, a part of transmitted light will be reflected in optical path and leaked into acquisition, tracking and targeting (ATP) subsystem. This reflected light will seriously interfere with the spot position measurement of received light. To solve this problem, we propose a new method based on intensity modulation and cyclic cross-correlation (CCR). Experiment results show that even when the reflected and received beams differ in intensity by 91.7 times, we can still accurately detect the received light spot position by using the proposed method, where the maximum error is 0.026 mrad and the root mean square error is as low as 0.012 mrad.

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Section: The Beacon-less Is-owc System Descriptionmentioning

confidence: 99%

Method to Measure Light Spot Position in Beacon-Less Inter-Satellite Communication System

et al. 2019

Applied Sciences

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“…When faced with the requirements of low-orbit satellite networking, space optical communication terminals must be developed towards high communication rates and miniaturization [ 3 ]. In recent years, a kind of Is-OWC communication terminal without independent beacon light has appeared [ 4 , 5 , 6 ]. In such terminals, the ATP system splits part of the light beam from the signal beam as the beacon light to detect the angle of the incidence light.…”

Section: Introductionmentioning

confidence: 99%

TRC-Based High-Precision Spot Position Detection in Inter-Satellite Laser Communication

Guo

et al. 2020

Sensors

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Inter-satellite laser communication (Is-OWC) is one of the main space optical communication technologies currently studied in various countries. In recent years, a kind of Is-OWC communication terminal without independent beacon light has appeared. Such terminals do not have a separate beacon laser with a large divergence angle, but use a narrower communication beam to complete space capture and tracking. Therefore, the energy of the light beam divided by the acquisition, tracking, and aiming (ATP) system is greatly reduced. How to perform high-precision spot position detection under extremely low signal-to-noise ratio (SNR) is a problem that must be faced. Aiming to resolve this problem, this article proposes to use a cosine signal to modulate the intensity of the signal light, so as to convert the problem of detecting a weak light signal into the problem of detecting a line spectrum signal. The authors used the time reversal convolution (TRC) algorithm with a window function to suppress noise and enhance the spectrum line, so as to accurately detect the amplitudes of the weak photocurrents. Finally, by calculating the ratio of the photocurrent amplitude values, the precise spot position is obtained. In the experiment, when the output SNR of the four-quadrant detector (QD) is as low as −17.86 dB, the proposed method can still detect the spot position and the absolute error is limited within 0.0238 mrad.

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“…The results show that by using Manchester coding, the performance of the system is improved due to self synchronization of transmitted bits. In 2016, Chaudhary et al reported the investigation and demonstration of hybrid polarization division multiplexing (PDM)‐WDM architecture in an IsOWC link 6 . The proposed work compares performance of non return‐to‐zero (NRZ) and return‐to‐zero (RZ) modulation schemes.…”

Section: Introductionmentioning

confidence: 99%

A high‐speed single‐channel inter‐satellite optical wireless communication link incorporating spectrum‐efficient orthogonal modulation scheme

Singh

Malhotra

Dhasarathan

2020

Micro & Optical Tech Letters

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The present work reports a novel single-channel highspeed inter-satellite optical wireless communication (IsOWC) transmission link by using a 3-D spectrum-efficient orthogonal modulation scheme incorporating hybrid non-return-to-zero-differential quadrature phase shift keying-polarization shift keying schemes. Three independent 40 Gbps information signals are parallel transported by modulating over distinct optical signal properties viz. amplitude, phase, and polarization of a single wavelength laser. The performance of the proposed system has been investigated by evaluating bit error rate (BER) performance of the IsOWC link vs link distance as performance metrics. Also, the link performance is numerically investigated in the presence of pointing errors. We numerically demonstrate a faithful 120 Gbps transmission at 26 000 km IsOWC link length. Further, the results report a reliable transmission up to 3.5 urad pointing error angle with acceptable BER performance of the link.

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High Speed Inter-Satellite Communication System by Incorporating Hybrid Polarization-Wavelength Division Multiplexing Scheme

Cited by 28 publications

References 9 publications

Method to Measure Light Spot Position in Beacon-Less Inter-Satellite Communication System

Method to Measure Light Spot Position in Beacon-Less Inter-Satellite Communication System

TRC-Based High-Precision Spot Position Detection in Inter-Satellite Laser Communication

A high‐speed single‐channel inter‐satellite optical wireless communication link incorporating spectrum‐efficient orthogonal modulation scheme

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