Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)1093-1097
Journal / PublicationJournal of Alloys and Compounds
Online published13 Nov 2014
Publication statusPublished - 15 Feb 2015


Effective near-infrared emission covering the fifth optical telecommunication window (1380-1525 nm) has been observed in Pr3+-doped phosphate (NMAP) glasses. Judd-Ofelt parameters Ω2 (6.38 × 10-20 cm2), Ω4 (20.30 × 10-20 cm2) and Ω6 (0.40 × 10-20 cm2) indicate a high inversion asymmetrical and strong covalent environment in the optical glasses. The effective bandwidth (Δλeff) of the corresponding 1D21G4 transition emission is obtained to be 124 nm, and the maximum stimulated emission cross-section (σem-max) at 1468 nm is derived to be 1.14 × 10-20 cm2. Channel waveguide was fabricated successfully by K+-Na+ ion-exchange method with mode field diameter of 8.8 μm in the horizontal direction and 6.7 μm in the vertical direction. Broad effective bandwidth, large emission cross-section and perfect thermal ion-exchangeability indicate that Pr3+-doped NMAP phosphate glasses are promising in developing integrated broadband waveguide amplifier, especially operating at E- and S-bands which belong to the fifth optical telecommunication window.

Research Area(s)

  • Broadband signal amplifier, Fifth optical telecommunication window, Phosphate glass waveguide, Praseodymium ion doping