Double line Neodymium doped GeO2-PbO waveguide amplifier for the second telecom window

Author(s)

Wetter, Niklaus U. ; Da Silva, Diego S. ; Kassab, Luciana Reyes P. ; De Rossi, Wagner ; Jiang, S ; Digonnet, MJF

• Document type: Journal article
• Source: OPTICAL COMPONENTS AND MATERIALS XVII; v. 11276, p. 7-pg., 2020-01-01.

Abstract

We report the production of active double waveguides in germanate glasses, GeO2-PbO doped with Nd3+, by direct femtosecond laser writing. The glasses were produced using the melt-quenching technique and the active waveguides were written using 30 fs laser pulses at 800 nm with different parameters of writing speeds and pulse energies depending on the rare earth elements used for doping. The photo-induced refractive index change was 5.2x10(-3). The Nd doped sample exhibited a relative gain of 3.6 dB/cm for 1.6 mW of 805 nm pump power. The results obtained in present work demonstrate that Nd3+ doped GeO2-PbO glasses are promising materials for the fabrication of integrated amplifiers, lossless components and lasers based on germanate glasses. (AU)

• FAPESP's process: 16/02326-9 - Micromachining with ultrashort laser pulses applied to the production and control of optofluidics circuits
• Grantee: Diego Silvério da Silva
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 13/26113-6 - Micromachining with ultrashort laser pulses applied to the production and control of optofluidic circuits
• Grantee: Wagner de Rossi
• Support Opportunities: Research Projects - Thematic Grants