Stress-induced single-polarization single-transverse mode photonic crystal fiber with low nonlinearity.
We report on the design of a single-polarization single-transverse mode large mode area photonic crystal fiber. By including index-matched stress applying elements in the photonic cladding an ultra-broadband single polarization window is obtained while a large mode field area of ~700 microm(2) is maintained. Based on that design, an Yb-doped double-clad photonic crystal fiber is realized that combines low nonlinearity and single polarization properties. A first result of the high power operation using this fiber is demonstrated.
Schreiber
T
T
Röser
F
F
Schmidt
O
O
Limpert
J
J
Iliew
R
R
Lederer
F
F
Petersson
A
A
Jacobsen
C
C
Hansen
K
K
Broeng
J
J
Tünnermann
A
A