Measurement of the core proximity in polished fiber substrates and couplers.
We report recent developments in a technique to measure the thickness of cladding remaining on polished singlemode fiber substrates. This technique relies on the measurement of the throughput attenuation resulting when a drop of liquid of appropriate refractive index is placed on the substrate. Applications to fiber couplers and other all-fiber devices are described.
Digonnet
M J
MJ
Feth
J R
JR
Stokes
L F
LF
Shaw
H J
HJ