[HTML][HTML] Luminescence and laser properties of RE-doped silica optical fibers: The role of composition, fabrication processing, and inter-ionic energy transfers

P Vařák, M Kamrádek, J Mrázek, O Podrazký… - Optical Materials: X, 2022 - Elsevier
Silica glass doped with rare-earth ions remains one of the most frequently used materials for
fiber lasers and amplifiers, owing to various advantages such as high thermal resistance …

Erbium–bismuth-doped germanium silicate active optic glass for broad-band optical amplification

J Šmejcký, V Jeřábek, D Mareš, J Voves, P Vařák… - Optical Materials, 2023 - Elsevier
This work deals with research and optimization of the optical Ge–Si glass composition
doped with Er 3+, Yb 3+ ions and bismuth optically active centers (BACs), which are …

Recent developments in rare-earths doped nano-engineered glass based optical fibers for high power fiber lasers

MC Paul, S Bysakh, S Das, A Dhar, M Pal… - Transactions of the …, 2016 - Taylor & Francis
Recent advances of development of rare-earth (RE) doped optical fibers have become
increasingly important due to their applications in various optoelectronic devices such as …

Thermal regenerated grating operation at temperatures up to 1400 C using new class of multimaterial glass-based photosensitive fiber

HZ Yang, XG Qiao, S Das, MC Paul - Optics letters, 2014 - opg.optica.org
The work demonstrates for the first time a thermal regenerated grating (RG) operating at an
ultra-high temperature up to 1400° C. A new class of photosensitive optical fiber based on …

Performance comparison of enhanced Erbium–Zirconia–Yttria–Aluminum co-doped conventional erbium-doped fiber amplifiers

AM Markom, MC Paul, A Dhar, S Das, M Pal… - Optik, 2017 - Elsevier
Abstract A new Erbium–Zirconia–Yttria–Aluminum co-doped fiber amplifier (Zr-EDFA) with
improved gain and noise figure characteristics is successfully demonstrated using a newly …

[HTML][HTML] Wideband and flat gain series erbium doped fiber amplifier using hybrid active fiber with backward pumping distribution technique

AA Al-Azzawi, AA Almukhtar, BA Hamida, S Das… - Results in Physics, 2019 - Elsevier
A modern wideband and flat gain erbium-doped fiber amplifier (EDFA) is suggested and
accomplished, by employing a recently fabricated hafnia-bismuth-erbium doped fiber (HB …

Compact and flat-gain fiber optical amplifier with Hafnia-Bismuth-Erbium co-doped fiber

AA Al-Azzawi, AA Almukhtar, PH Reddy, D Dutta… - Optik, 2018 - Elsevier
For the first time, we demonstrated a compact Erbium-doped fiber amplifier (EDFA) using a
newly developed Hafnia Bismuth Erbium co-doped fiber (HBEDF) as a gain medium. The …

Enhanced erbium–zirconia–yttria–aluminum co-doped fiber amplifier

MC Paul, A Dhar, S Das, M Pal, SK Bhadra… - IEEE Photonics …, 2015 - ieeexplore.ieee.org
An efficient optical amplifier is demonstrated using an improved erbium-zirconia-yttria-
aluminum co-doped fiber (Zr-EDF) as the gain medium. With a combination of both Zr and …

Wideband optical fiber amplifier with short length of enhanced erbium–zirconia–yttria–aluminum co-doped fiber

AA Almukhtar, AA Al-Azzawi, PH Reddy, S Das, A Dhar… - Optik, 2019 - Elsevier
A wideband optical amplifier is demonstrated by using an enhanced Zirconia–Yttria–
Aluminum erbium doped fiber (Zr-EDF) with a total length of 3.5 m as gain media, in double …

Double-pass erbium-doped zirconia fiber amplifier for wide-band and flat-gain operations

SW Harun, MC Paul, NAD Huri, A Hamzah… - Optics & Laser …, 2011 - Elsevier
The double-pass erbium-doped zirconia fiber amplifier (EDZFA) is proposed and
demonstrated to provide a wide-band amplification as well as flat-gain operation in both the …