Optical low-coherence reflectometry characterization of cladding modes excited by long-period fiber gratings.
The group refractive-index difference of cladding modes excited by a long-period fiber grating is characterized by use of the technique of optical low-coherence reflectometry, with a precision of <10(-4) . Very good agreement between theoretical and experimental results is demonstrated.
Varelas
D
D
Iocco
A
A
Limberger
H G
HG
Salathé
R P
RP
Vasiliev
S A
SA
Dianov
E M
EM
Medvedkov
O I
OI
Protopopov
V N
VN