Simple fiber-optic low-temperature sensor that uses microbending loss.
A simple fiber-optic temperature sensor is constructed that uses the temperature dependence of microbending loss. The sensor is tested and shows high sensitivity and a strict linear scale over a wide range from 20 to 180 K. It is shown that a proper choice of signal wavelength can be used either to make the sensor more sensitive or to make it independent of changes in laser wavelength.
O
O
Lumholt
A
A
Bjarklev
S
S
Dahl-Petersen
C C
CC
Larsen
J H
JH
Povlsen
T
T
Rasmussen
K
K
Rottwitt