Effect of P-to-Rare Earth Atomic Ratio on Energy Transfer in Er-Yb-Doped Optical Fiber

Kobayashi, Yuta; Sekiya, Edson Haruhico; Banno, Mizuki; Nishimura, Ryoichi; Okazaki, Tomoya; Hashimoto, Yosuke; Araki, Takao; Ichii, Kentaro; Saito, Kazuya

doi:10.1109/jlt.2020.2989774

Cited by 11 publications

(2 citation statements)

References 38 publications

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“…The energy bands of erbium ions are compressed, which redshifts the spectrum of the ESA and thus increases the gain level at the long wavelength direction of the L-band where the gain level was suppressed by the ESA [9,13,21]. Additionally, by codoping phosphorous ions, the lifetime of level 4 I11/2 of erbium ions is decreased, which inhibits the back-energy transfer of erbium ions to ytterbium ions [22][23][24]. In the aspect of gain characteristics, the highest gain level is achieved with the dualstage double-pass structure, which covers most of the gain wavelength range, while the lowest gain level is from the single-stage single-pass structure.…”

Section: Resultsmentioning

confidence: 99%

Dual-Stage Double-Pass Extended L-Band Erbium-Doped Fiber Amplifier with Improved Gain Performance

Lao,

Ruan,

Lin

et al. 2023

Photonics

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Extended L-band erbium-doped fiber amplifiers (EDFAs) have attracted much attention in recent years despite their relatively low gain levels. In this paper, a dual-stage extended L-band EDFA with improved gain level is demonstrated by using an Er/Yb/P co-doped fiber-based double-pass structure assisted by a low noise pre-amplifier. High gain levels of up to 48.79 dB at 1566 nm and 20.05 dB at 1621.4 nm are achieved with saturated output power at 1605 nm of 20.58 dBm under a total pump power of only 400 mW. Bandwidths with the gain of more than 20 and 30 dB are reached up to 66 nm (1555.4–1621.4 nm) and 58.4 nm (1557.5–1615.9 nm), respectively. The noise figure benefited by using the low noise pre-amplifier is 5.40 ± 1.55 dB in the 1565–1610 nm range. The wide gain bandwidth, high gain level and relatively low pump power give it great potential for future high-capacity optical fiber communication systems.

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Section: Resultsmentioning

confidence: 99%

Dual-Stage Double-Pass Extended L-Band Erbium-Doped Fiber Amplifier with Improved Gain Performance

Lao,

Ruan,

Lin

et al. 2023

Photonics

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show abstract

“…Additionally, doping high-concentration phosphorus is also necessary for Er 3+ /Yb 3+ codoped silica fiber (EYDF) [10,11]. This has two advantages, namely, an improved dispersion effect of the Er 3+ and Yb 3+ ions [12], and a weak back energy transfer (ET) from the Er 3+ to Yb 3+ ions in the high phonon energy environment [13,14]. The current power record of the single-mode EYDF is 302 W, which has an optical efficiency of 56%.…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of Absorption and Energy Transfer Efficiency of Er3+/Yb3+/P5+ Co-Doped Silica Fiber Core Glasses

et al. 2022

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A high phosphorus Er3+/Yb3+ co-doped silica (EYPS) fiber core glass was prepared using the sol-gel method combined with high-temperature sintering. The absorption spectra, emission spectra, and fluorescence decay curves were measured and compared in temperatures ranging from 300 to 480 K. Compared to 915 and 97x nm, the absorption cross-section at ~940 nm (~0.173 pm2) demonstrates a weaker temperature dependence. Hence, the 940 nm pump mechanism is favorable for achieving a high-power laser output at 1.5 μm. Additionally, the double-exponential fluorescence decay of Yb3+ ions and the emission intensity ratio of I1018nm/I1534nm were measured to evaluate the energy transfer efficiency from Yb3+ ions to Er3+ ions. Through the external heating and active quantum defect heating methods, the emission intensity ratios of I1018nm/I1534nm increase by 30.6% and 709.1%, respectively, from ~300 to ~480 K. The results indicate that the temperature rises significantly reduce the efficiency of the energy transfer from the Yb3+ to the Er3+ ions.

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Effect of Ce co-doping on radiation resistance behavior and laser performance of Er/Yb/Ce co-doped high-phosphorous polarization-maintaining silica fiber

Zhu,

Jiao,

Wang

et al. 2024

Ceramics International

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Effect of P-to-Rare Earth Atomic Ratio on Energy Transfer in Er-Yb-Doped Optical Fiber

Cited by 11 publications

References 38 publications

Dual-Stage Double-Pass Extended L-Band Erbium-Doped Fiber Amplifier with Improved Gain Performance

Dual-Stage Double-Pass Extended L-Band Erbium-Doped Fiber Amplifier with Improved Gain Performance

Temperature Dependence of Absorption and Energy Transfer Efficiency of Er3+/Yb3+/P5+ Co-Doped Silica Fiber Core Glasses

Effect of Ce co-doping on radiation resistance behavior and laser performance of Er/Yb/Ce co-doped high-phosphorous polarization-maintaining silica fiber

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