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

Al-Azzawi, Alabbas A.; Almukhtar, Aya A.; Reddy, P. Harshavardhan; Dutta, Dipak Kumar; Das, Shyamal; Dhar, Anirban; Paul, Mukul Chandra; Zakaria, U.N.; Ahmad, Harith; Harun, Sulaiman Wadi

doi:10.1016/j.ijleo.2018.05.104

Cited by 15 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Manufacturers typically do not provide information on these doped fiber properties. Accordingly, this section gives a more detailed description of all the experimental setups used to obtain the missing physical parameters of the EYDF: (a) Er 3+ and Yb 3+ concentrations, (b) core and inner cladding overlap factor, (c) refractive index profile, and (d) Er 3+ /Yb 3+ absorption and emission spectra and cross-sections [7,8]. The fiber under test is an Er 3+ /Yb 3+ -co-doped double-clad fiber that has a flower-shaped inner cladding, which is discussed further in Section 2.2.…”

Section: Characterization Of the Erbium/ytterbium-co-doped Fiber Para...mentioning

confidence: 99%

Cladding-Pumped Er/Yb-Co-Doped Fiber Amplifier for Multi-Channel Operation

Zakis

Olonkins²,

Udaļcovs

et al. 2022

Photonics

View full text Add to dashboard Cite

Cladding-pumped erbium (Er3+)/ytterbium (Yb3+)-co-doped fiber amplifiers are more advantageous at high output powers. However, this amplification technique also has potential in telecom-related applications. These types of amplifiers have complex properties, especially when considering gain profile and a pump conversion efficiency. Such metrics depend on the doped fiber profile, absorption/emission spectra, and the input signal power. In this context, we design, build and characterize an inhouse prototype of cladding-pumped Er3+/Yb3+-co-doped fiber amplifier (EYDFA). Our goal is to identify the EYDFA configuration (a co-doped fiber length, pump power, input signal power) suitable for signal amplification in a multichannel fiber-optic transmission system with a dense wavelength allocation across the C-band (1530–1565 nm). Our approach involves experimentally determining the Er3+/Yb3+-co-doped fiber’s parameters to be used in a simulation setup to decide on an initial EYDFA configuration before moving to a laboratory setup. An experimental EYDFA prototype is tested under different conditions using a 48-channel dense wavelength division multiplexing (DWDM, 100 GHz) system to evaluate the absolute gain and gain uniformity. The obtained results allow the cladding pump amplifier’s suitability for wideband signal amplification to be assessed. The developed prototype provides >21 dB of gain with a 12 dB ripple within 1534–1565 nm. Furthermore, we show that the gain profile can be partially flattened out by using longer EYDF spans. This enhances signal amplification in the upper C-band in exchange for a weaker amplification in the lower C-band, which can be marginally improved with higher pump powers.

show abstract

Section: Characterization Of the Erbium/ytterbium-co-doped Fiber Para...mentioning

confidence: 99%

Cladding-Pumped Er/Yb-Co-Doped Fiber Amplifier for Multi-Channel Operation

Zakis

Olonkins²,

Udaļcovs

et al. 2022

Photonics

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…Recently, interest has also been obtained for erbiumbismuth co-doped silicate fibers, that can be useful for both amplifier and laser applications [21,22]. For instance, we have previously demonstrated a compact optical amplifier using 50 cm long hafnia-bismuth-erbium co-doped fiber (HB-EDF) as a gain medium [21]. The idea to develop optical fibers with SiO 2 -HfO 2 core-network stemmed from the known fact that HfO 2 is a high refractive-index material, transparent over a wide wavelength range, from 0.3 to 10 µm [23,24].…”

Section: Introductionmentioning

confidence: 99%

“…In this work, to enhance the non-linear optical properties of the fiber, we have increased the doping levels of Bi 2 O 3 as well as Er 2 O 3 through the incorporation of more HfO 2 , Y 2 O 3 and GeO 2 by reducing the doping amount of Al 2 O 3 compared to the earlier demonstrated fiber used as broad-band amplification [21,22] and Q switched fiber laser [25,26]. We have chosen this kind of HfO 2 doped core-glass as potentially promising for high-power laser applications that require a high optical damage threshold [23,24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Q-switched pulse generation by stimulated Brillouin scattering assisted four-wave mixing effect in erbium–bismuth co-doped multi-elements silica glass based optical fiber laser

Ghosh,

Ali,

Arsad

et al. 2023

Laser Phys.

View full text Add to dashboard Cite

We demonstrate Q-switched pulse generation at the 1562.5 nm region by using a 70 cm long erbium–bismuth co-doped alumina–germania–hafnium–yttria silica glass-based fiber as a gain medium in a simple ring resonator configured without saturable absorber and optical isolator devices. The Q-switching was obtained based on a stimulated Brillouin scattering assisted four-wave mixing effect in the gain medium, which induced the intensity modulation mechanism. The laser produced a multi-wavelength output comb centered at 1562.6 nm with a peak-to-peak spacing of about 0.09 nm due to nonlinear effects. Stable Q-switched operation of a hafnia–bismuth–erbium co-doped fiber laser was obtained at a pump power range of 129–319 mW with the repetition rate varying from 45.9 kHz to 89.3 kHz and the pulse width ranging from 8.8 µs to 3.58 µs. A maximum pulse energy of 26.9 nJ at an average output power of 2.4 dBm was achieved. This demonstrates a new passive technique based on a highly nonlinear gain medium for realizing Q-switched all-fiber laser sources.

show abstract

“…These fibres allow high Er 3+ ions concentration that prevents cluster formation [28] and minimise the EDF length to fulfil an ultra‐compact amplifier device [29–31]. Recently, hafnium‐bismuth‐based erbium co‐doped fibres (HB‐EDFs) have received considerable attention for the third transmission window applications [32, 33]. The choice of hafnium (Hf) ions coordinated to more than four oxygen atoms and the creation of non‐bridging oxygens in silica network cause the glass to be able to host other optically active co‐dopants materials in near‐ and mid‐infrared regions (such as erbium (Er), aluminium (Al), ytterbium (Yb), bismuth (Bi) etc.)…”

Section: Introductionmentioning

confidence: 99%