Performance Enhancement of Praseodymium Doped Fiber Amplifiers

Alharbi, Abdullah G.; Mirza, Jawad; Raza, Mehak; Ghafoor, Salman

doi:10.32604/cmc.2022.029317

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…The absorption and scattering are the main processes in the atmosphere. For visible and IR wavelengths, molecules of water, carbon dioxide, and ozone are the major contributing factors [14]. The attenuation experienced by the optical signal when it passes through the atmosphere can be quantified in terms of optical depth r which correlates with power at the receiver PR and the transmitted power PT [15] as…”

Section: Absorption and Scattering Lossesmentioning

confidence: 99%

Duplex Baseband Signal Transmission Over Free Space Optical (FSO) Link Employing Carrier Reuse

Zaheer

2023

Preprint

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With increasing IoT and a plethora of multimedia applications being used, there is an ever-increasing demand for bandwidth-intensive applications coupled with cost-effectiveness. Communication networks employing optical fiber had been de facto standard for such communication systems. The Optical Fiber network's high cost and man-hours required for laying demand wireless solutions. Therefore, an optimum and cost-effective duplex optical link for two channels baseband signal data transmission has been designed and validated using a single laser source. The link is designed for high data rate transmission between buildings within 1.5~2 km utilizing modular and low complexity. An optical link for 20 Gb/s duplex data transmission is designed using a single laser source. A transmission distance of 1.5 km has been achieved by providing a cost-efficient design with low complexity by utilizing differential quadrature phase shift keying (DQPSK) and On-Off Keying (OOK) modulation techniques. The design allowed us to reuse the downlink signal for the uplink transmission over free Space, thus eliminating the requirement for a separate laser at the other end. Each channel's transmission data rate was 10Gb/sec. At the former end, the DQPSK technique was employed for data modulation and the data was transmitted into free space. The data was then split at the latter end for downlink reception along with reusing the downlink received signal for uplink transmission to the former end utilizing the OOK modulation technique. The received data was compared with the transmitted one to verify and validate the system's accuracy through signal waveforms and BER (Bit Error Rate). Bit error rate (BER) curves and eye diagrams of the received uplink and downlink signal over a duplex transmission single fiber link are provided.

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Section: Absorption and Scattering Lossesmentioning

confidence: 99%