AI2O3:Er3+ as a gain platform for integrated optics

Bradley, Jonathan D. B.

doi:10.3990/1.9789036528771

Cited by 4 publications

(6 citation statements)

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“…The simulated pump and signal mode fields had an overlap of ~95% and ~85% with the doped region, respectively. The refractive indices employed in the simulations were taken from previous measurements [27]. The waveguide cross-section and the mode-field distribution at the signal wavelength of 1532 nm are displayed in Fig.…”

Section: Amplifier Design and Fabricationmentioning

confidence: 99%

Erbium-doped spiral amplifiers with 20 dB of net gain on silicon

et al. 2014

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Spiral-waveguide amplifiers in erbium-doped aluminum oxide on a silicon wafer are fabricated and characterized. Spirals of several lengths and four different erbium concentrations are studied experimentally and theoretically. A maximum internal net gain of 20 dB in the small-signal-gain regime is measured at the peak emission wavelength of 1532 nm for two sample configurations with waveguide lengths of 12.9 cm and 24.4 cm and concentrations of 1.92 × 10(20) cm(-3) and 0.95 × 10(20) cm(-3), respectively. The noise figures of these samples are reported. Gain saturation as a result of increasing signal power and the temperature dependence of gain are studied.

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Section: Amplifier Design and Fabricationmentioning

confidence: 99%

Erbium-doped spiral amplifiers with 20 dB of net gain on silicon

et al. 2014

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“…A longer cavity not only imposes a tighter constraint on the coupling constant of the grating to keep the device lasing in a single longitudinal mode, but it also experiences an upper bound set by the absorption length of the pump light. When viewed as a function of length, the loss of pump power along the cavity of an extremely long laser will eventually cause a region of the device to become highly absorbing and thus prevent laser action from occurring [15]. Optimized devices reaching 20 mm in length were fabricated, but the resolvable width differences in their sidewall gratings (and thus their realizable coupling constants) prevented them from fulfilling the required resonance condition for lasing.…”

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confidence: 99%

Arrayed narrow linewidth erbium-doped waveguide-distributed feedback lasers on an ultra-low-loss silicon-nitride platform

et al. 2013

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We demonstrate an array of erbium-doped waveguide-distributed feedback lasers on an ultra-low-loss Si(3)N(4) platform. Sidewall gratings providing the lasing feedback are defined in the silicon-nitride layer using 248 nm stepper lithography, while the gain is provided by a reactive co-sputtered erbium-doped aluminum-oxide layer. We observe lasing output over a 12 nm wavelength range (1531-1543 nm) from the array of five separate lasers. Output powers of 8 μW and lasing linewidths of 501 kHz are obtained. Single-mode operation is confirmed, with side-mode suppression ratios over 35 dB for all designs.

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“…Despite the fact that silicate glasses have relatively low solubility of RE, it is feasible to shift the limit of solubility simply by adding of P 2 O 5 , Al 2 O 3, or just by ZnO, which make it possible to increase the resulting intensity of the luminescence of silicate glasses in the near infrared region [3][4][5]. This fact that the presence of zinc oxide (in comparison with calcium or magnesium oxides) positively influences the intensity of luminescence can be ascribed to the decreasing of basicity of silicate glass and to the basicity close to the value of phosphate glasses [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Silicate glasses doped with erbium have been used as a suitable material for photonics because of their strong luminescence in the near infrared region, their optical and mechanical properties, chemical stability and compatibility with the silica optical fibres used. Trivalent erbium is an ideal luminescent centre in visible and mid-and infrared spectra thanks to its well-described transitions { 2 4 I 11/2 → 4 I 13/2 (2900 nm)} and to the fact that it can be pumped easily in the visible as well as near-infrared ranges of the spectra Trivalent ytterbium is one of the best co-dopants for significantly increasing absorption and pumping efficiency around 980 nm. This element can subsequently help to increase luminescence intensity as a result of the excitation of the energy level 4 I 11/2 of Er 3+ thanks to the energy transfer between the mentioned energy level of Er 3+ and the energy level of Yb 3+ ( 2 F 5/2 ).…”

Section: Introductionmentioning

confidence: 99%