Germania-glass-core silica-glass-cladding modified chemical-vapor deposition optical fibers: optical losses, photorefractivity, and Raman amplification.
Germania-glass-core silica-glass-cladding single-mode fibers (deltan as great as 0.143) with a minimum loss of 20 dB/km at 1.85 microm were fabricated by modified chemical-vapor deposition. The fibers exhibit strong photorefractivity, with type IIa index modulation of 2 x 10(-3). A Raman gain of 300 dB/(kmW) was determined at 1.12 microm. Only 3 m of such fibers is sufficient for constructing the 10-W Raman laser at 1.12 microm with a 13-W pump at 1.07 microm.
Mashinsky
V M
VM
Fiber Optics Research Center at the A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991 Moscow, Russia. vmm@fo.gpi.ru
Neustruev
V B
VB
Dvoyrin
V V
VV
Vasiliev
S A
SA
Medvedkov
O I
OI
Bufetov
I A
IA
Shubin
A V
AV
Dianov
E M
EM
Guryanov
A N
AN
Khopin
V F
VF
Salgansky
M Yu
MY