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Optical Amplification in Eu ^{3+} -Doped DNA-Based Biopolymer

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3 Author(s)
K. C. Tsang ; Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong ; C. -Y. Wong ; E. Y. B. Pun

Europium (Eu3+) -doped deoxyribonucleic acid-cetyltrimethylammonium (DNA-CTMA) biopolymers have been prepared and characterized optically. Quartz capillary tube encapsulated Eu3+-doped biopolymeric 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 24 dB has been obtained for a 15-mm-long device.

Published in:

IEEE Photonics Technology Letters  (Volume:23 ,  Issue: 16 )