🔬 Exciting News in the World of Optics!
We’re thrilled to unveil our latest paper, “A High Power Holmium-Doped Fiber Laser for Bidirectional Transmission Between Two HAPS,” published in Optical and Quantum Electronics! Our innovative laser, emitting in the 2000–2200 nm range, enables bidirectional data transfer at 25 Gb/s over 200 km. This breakthrough advances optical wireless communication, shaping the future of high-altitude platform networks. 🌟
📄 Paper Details:
📝 Title: A High Power Holmium-Doped Fiber Laser for Bidirectional Transmission Between Two HAPS
📅 Published: October 30, 2023 (online)
👩🔬 Authors: Jawad Mirza, Ahmad Atieh, Salman AlQahtani, Salman Ghafoor
👩🔬 Abstract:
The optical transmission window around 2000 nm is getting significant attention for terrestrial and deep-space communication due to lowest absorption. Moreover, it is also being considered as an alternate optical window for spectral expansion beyond C-, L-, and U-bands to resolve the capacity related issues of future optical networks. Holmium-doped gain materials have the capacity to emit light in the 2000–2200 nm wavelength range where Thulium-doped gain materials are comparatively inefficient. In this paper, the design of high power and repetition rate tunable actively mode-locked Holmium-doped fiber laser (AML-HDFL) is demonstrated through numerical simulations. The design is based on a single ring cavity for bidirectional transmission of data over optical wireless channel (OWC) at the rate of 25 Gb/s between two high-altitude platform stations (HAPS). A wide wavelength tuning range from 2000–2150 nm at a side-mode suppression ratio (SMSR) of 35 dB is observed. Train of mode-locked pulses having peak power of 21 W, full-width at half maximum (FWHM) of 7.4 ps, pulse energy of 0.148 nJ and signal to noise ratio (SNR) of 40.6 dB is generated. Moreover, the performance of tunable AML-HDFL using 1950 nm pumping is compared with 1840 nm pumping. Performance of the downlink (DL) and uplink (UL) channels are observed using Gamma-Gamma channel model for medium and strong turbulence where forward error correction (FEC) limit of 3.8×10−3 is achieved between two HAPS that are separated by a distance of 200 km.
Explore the full paper in the latest issue of Optical and Quantum Electronics for in-depth insights into our cutting-edge research. Thank you for your support! 🚀✨
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