Light emission from thulium silicates and oxides for optical amplifiers on silicon in the extended optical communications band

Omi, Hiroo; Hagiwara, Akeo; Tawara, Takehiko

doi:10.1063/1.4816717

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B Pl Emission and The Energy Transfer Dynamics1

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2014

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“…PL intensity enhancement of ErYb silicates has been reported, and the sensitization effect and the reduction of the self-quenching have been discussed [30][31][32]. In comparison to the ErYb silicate system, the Er x Yb y Y 2−x−y SiO 5 system can control the two effects separately by changing the contents x and y.…”

Section: B Pl Emission and The Energy Transfer Dynamicsmentioning

confidence: 99%

Rare earth silicates as gain media for silicon photonics [Invited]

Isshiki¹,

Jing²,

Sato³

et al. 2014

Photon. Res.

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Er x Y 2−x SiO 5 and Er x Yb y Y 2−x−y SiO 5 crystalline thin films were investigated to apply to the high-gain media for silicon photonics. In addition to the sol-gel method, the directed self-assembly approach, using layer-by-layer deposition techniques, was also introduced to improve the crystallinity. The relaxation processes in Er ions were discussed to clarify the contribution of the energy transfer and cooperative upconversion. After optimization of the Er content, a Si photonic crystal slot Er x Y 2−x SiO 5 waveguide amplifier was fabricated, and a 30 dB∕cm modal gain was demonstrated. This achievement demonstrates the potential for compact and high optical gain devices on Si chips.

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Section: B Pl Emission and The Energy Transfer Dynamicsmentioning

confidence: 99%