Tapered silicon optical fibers.
The tapering of silicon optical fibers is demonstrated using a fusion splicer. The silicon fibers are fabricated using a high pressure chemical deposition technique to deposit an amorphous silicon core inside a silica capillary and the tapering is performed in a separate post-process. Optical and material characterization has revealed a smooth transition region leading to a uniform tapered waist that are both simultaneously crystallized to yield a solid polysilicon core. The strong mode confinement and low taper loss measured in the silicon fibers verifies this tapering approach for the fabrication of structures with nanoscale core dimensions.
Healy
N
N
Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK.
Sparks
J R
JR
Sazio
P J
PJ
Badding
J V
JV
Peacock
A C
AC