Narrow-bandpass filter with gain by use of twin-core rare-earth-doped fiber.

Abstract

We demonstrate both numerically and experimentally that rare-earth-doped twin-core fiber couplers can function as a narrow-bandpass wavelength filter or as a demultiplexer. The experimental bandwidth obtained is 6.5 nm. In addition, the filtered signal experiences a gain of 20 dB instead of attenuation.

Cite this paper

@article{Wu1993NarrowbandpassFW, title={Narrow-bandpass filter with gain by use of twin-core rare-earth-doped fiber.}, author={Baichang Wu and Pak Lim Chu}, journal={Optics letters}, year={1993}, volume={18 22}, pages={1913-5} }