Journal
PHYSICAL REVIEW LETTERS
Volume 115, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.027403
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [11374092, 61474040, 11204073]
- National Basic Research Program of China [2012CB933703]
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
- Hunan Provincial Science and Technology Department [2014FJ2001, 2014GK3015, 2014TT1004]
Ask authors/readers for more resources
Nanoscale near-infrared optical amplification is important but remains a challenge to achieve. Here we report a unique design of silicon and erbium silicate core-shell nanowires for high gain submicrometer optical amplification in the near-infrared communication band. The high refraction index silicon core is used to tightly confine the optical field within the submicron structures, and the single crystalline erbium-ytterbium silicates shell is used as the highly efficient gain medium. Both theoretical and experimental results show that, by systematically tuning the core diameter and shell thickness, a large portion of the optical power can be selectively confined to the erbium silicate shell gain medium to enable a low loss waveguide and high gain optical amplifier. Experimental results further demonstrate that an optimized core-shell nanowire can exhibit an excellent net gain up to 31 dB mm(-1), which is more than 20 times larger than the previously reported best results on the micron-scale optical amplifiers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available