High‐Gain of Nd^III Complex Doped Optical Waveguide Amplifiers at 1.06 and 1.31 µm Wavelengths Based on Intramolecular Energy Transfer Mechanism (Adv. Mater. 12/2023)

Abstract

Active Polymer Waveguides In article number 2209239, Hui Xu, Dan Zhang, and co‐workers report high gains at 1.06 and 1.31 μm wavelengths in a novel complex Nd (TTA)3(XPO)‐doped polymer waveguide with the excitation by light‐emitting diodes (LEDs) instead of a semiconductor laser as the pump source. The importance of this work is to minimize the commercial cost of waveguide amplifiers in planar photonic integration.

Demonstration of Optical Gain at 1535 nm Based on ErIII Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

“…[20,23,[33][34][35] Although this approach can circumvent the problem caused by the aforementioned dry etching technology, optical leakage and high transmission loss from parts of planar waveguides have become challenges for polymer waveguide amplifiers to achieve stable output signals and net gains. [36] In this study, an evanescent-field waveguide structure was adopted. It comprised a passive SU-8 channel waveguide and an active complex Er(DBTTA) 3 (DBFDPO)-doped PMMA polymer as the upper cladding.…”