High-gain optical amplification in Eu(3+)-doped polymer
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Updated: Jun 16, 2026
Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
Published on: June 2, 2017
Kwok Chu Tsang1, Chun-Yuen Wong, Edwin Yue Bun Pun
1Department of Electronic Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
Abstract:
Europium (Eu(3+))-doped epoxy-based resin Norland optical adhesive (NOA) polymers have been prepared and characterized optically. Quartz capillary tube encapsulated Eu(3+)-doped NOA polymeric waveguides have been fabricated via a simple withdrawal molding technique. Optical amplification at 612 nm wavelength has been demonstrated in these waveguide devices, and the signal enhancements for different lengths of the devices have been measured. A maximum signal enhancement of ~30 dB has been obtained for a 16 mm long device.
