Characterization of broadband amplified spontaneous emission of erbium-doped tellurite fiber with D-shape cladding

Zhang, Junjie; Dai, Shixun; Li, Shunguang; Xu, Shiqing; Wang, Guonian; Hu, Lili

doi:10.1016/j.matlet.2004.05.083

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…In order to cover the above wavelength range, it is crucial to extract optical gain in EDF for the wavelengths shorter than the 1480 nm. Usually, the optical gain ranging from 1450 nm to 1480 nm for fiber lasers can be obtained by photon absorption method through the laser transition between 3 H 4 → 3 F 4 multiplet in thulium-doped fiber [5][6][7], the 4 I 13/2 → 4 I 15/2 multiplet in erbium-doped tellurite fiber [8,9] or by photon inelastic scattering method through the transition between the virtual excited states to ground state in silica Raman fiber [10]. Conventionally, the 4 I 13/2 → 4 I 15/2 multiplet of silica-based EDF at room temperature can only emit fluorescence at the wavelengths longer than 1490 nm [11].…”

Section: Introductionmentioning

confidence: 99%

Towards the short-wavelength limit lasing at 1450 nm over 4I13/2 ? 4I15/2 transition in silica-based erbium-doped fiber

Chen¹,

Hung²,

Chi³

et al. 2007

Opt. Express

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The transition rate of the stimulated emission at the higher energy levels of the excited states in a silica-based erbium-doped fiber can be enhanced by introducing fundamental-mode cutoff filtering mechanism. The electrons excited by optical pumping can more occupy the higher energy levels of the excited states when the transition rate for the lower energy levels (longer wavelengths) of the excited states is substantially suppressed. The achieved lasing wavelength can thus be moving toward the shorter wavelengths of the gain bandwidth. The laser transition between 4I13/2 ? 4I15/2 multiplets of the silica-based erbium-doped fiber is known to emit fluorescence with the shortest wavelength around 1450 nm. We, for the first time, experimentally demonstrate a widely tunable fiber laser at the wavelength very close to 1450 nm by using a standard silica-based C-band erbium-doped fiber. The tuning range covers 1451.9-1548.1 nm, with the best temperature tuning efficiency as high as 57.3 nm/ degrees C, by discretely introducing tunable fundamental-mode cutoff tapered fiber filters along a 16-m-long erbium-doped fiber under a 980 nm pump power around 200 mW. The signal-ASE-ratio can be higher than 45 dB whereas the FWHM of the laser lasing lights can be reduced below 0.2 nm by using an additional Fabry-Perot filter.

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Section: Introductionmentioning

confidence: 99%

Towards the short-wavelength limit lasing at 1450 nm over 4I13/2 ? 4I15/2 transition in silica-based erbium-doped fiber

Chen¹,

Hung²,

Chi³

et al. 2007

Opt. Express

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“…Peak wavelength instability is shown in figure 4(b). This effect may be explained by approaching the lasing threshold due to back reflections from the splice of rare-earth-doped fiber with silica fiber similar to [13]. It may be clearly observed at a fiber length of 34 cm.…”

Section: Resultsmentioning

confidence: 89%

Infrared broadband all-fiber light source based on high-concentration Er³⁺/Yb³⁺composite double-clad fiber

et al. 2017

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We report characteristics of an infrared broadband all-fiber light source based on a highconcentration Er 3+ /Yb 3+ co-doped phosphate core silica cladding fiber as a gain medium. The fiber blank was fabricated by the 'rod-in-tube' technique. The concentrations of rare-earth ions in a phosphate glass for the fiber core were 1.7 × 10 21 cm −3 of Yb 3+ and 1.3 × 10 20 cm −3 of Er 3+ . The source demonstrated a maximum output power about 20 mW with a fiber length of only 50 cm. Maximum bandwidth at the −10 dB level was 16.39 nm at a fiber length of 80 cm. Results from experiment indicate that using composite fiber offers good possibilities in achieving a broadband emission with a gain medium length several times shorter than that of silica fibers.

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“…For multi-channel WDM transmission, it is essential to have a flat-gain broadband spectrum to minimize channel-to-channel crosstalk and gain excursion [8,9,10]. However, the bandwidths of the conventional erbium-doped fiber amplifier (EDFA) for the C-band (1530–1565 nm) and the thulium-doped fiber amplifier (TDFA) for the S-band (1460–1530 nm) are limited [11,12]. A logical approach to achieving broadband gain covering the S + C band is to dope with both Er 3+ and Tm 3+ [13,14,15,16].…”

Section: Introductionmentioning

confidence: 99%

Spectral Properties of Er3+/Tm3+ Co-Doped ZBLAN Glasses and Fibers

et al. 2017

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A series of Er3+/Tm3+ co-doped fluoride (ZBLAN) glasses and fibers was prepared and their fluorescence spectra was measured under excitation at 793 nm and 980 nm. Correlation between the self-absorption effect of rare-earth ions and the shift of the emission peak was investigated. With the increasing length of fiber, the emission peaks red-shift when self-absorption occurs at the upper level of emission transition or blue-shift when that occurs at the lower level. As a result of the strong self-absorption effect, Er3+/Tm3+ co-doped fibers mainly yield 1390–1470, 1850–1980, and 2625–2750 nm emissions when excited at 793 nm, and 1480–1580, 1800–1980, and 2625–2750 nm emissions when excited at 980 nm. Further, a broadband emission in the range of 1410–1580 nm covering the S + C communication band was obtained by the dual-pumping scheme of 793 nm and 980 nm. Results suggest that the dual-pumping scheme would be more effective and important for an Er3+/Tm3+ co-doped fiber amplifier working in the S + C communication band.

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Characterization of broadband amplified spontaneous emission of erbium-doped tellurite fiber with D-shape cladding

Cited by 4 publications

References 14 publications

Towards the short-wavelength limit lasing at 1450 nm over 4I13/2 ? 4I15/2 transition in silica-based erbium-doped fiber

Towards the short-wavelength limit lasing at 1450 nm over 4I13/2 ? 4I15/2 transition in silica-based erbium-doped fiber

Infrared broadband all-fiber light source based on high-concentration Er³⁺/Yb³⁺composite double-clad fiber

Spectral Properties of Er3+/Tm3+ Co-Doped ZBLAN Glasses and Fibers

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Characterization of broadband amplified spontaneous emission of erbium-doped tellurite fiber with D-shape cladding

Cited by 4 publications

References 14 publications

Towards the short-wavelength limit lasing at 1450 nm over 4I13/2 ? 4I15/2 transition in silica-based erbium-doped fiber

Towards the short-wavelength limit lasing at 1450 nm over 4I13/2 ? 4I15/2 transition in silica-based erbium-doped fiber

Infrared broadband all-fiber light source based on high-concentration Er3+/Yb3+composite double-clad fiber

Spectral Properties of Er3+/Tm3+ Co-Doped ZBLAN Glasses and Fibers

Contact Info

Product

Resources

About

Infrared broadband all-fiber light source based on high-concentration Er³⁺/Yb³⁺composite double-clad fiber