Infrared glass-based negative-curvature anti-resonant fibers fabricated through extrusion.
Negative curvature fibers have been gaining attention as fibers for high power infrared light. Currently, these fibers have been made of silica glass and infrared glasses solely through stack and draw. Infrared glasses' lower softening point presents the opportunity to perform low-temperature processing methods such as direct extrusion of pre-forms. We demonstrate an infrared-glass based negative curvature fiber fabricated through extrusion. The fiber shows record low losses in 9.75 - 10.5 µm range (which overlaps with the CO2emission bands). We show the fiber's lowest order mode and measure the numerical aperture in the longwave infrared transmission band. The possibility to directly extrude a negative curvature fiber with no penalties in losses is a strong motivation to think beyond the limitations of stack-and-draw to novel shapes for negative curvature fibers.
Rafael R
RR
Gattass
Daniel
D
Rhonehouse
Daniel
D
Gibson
Collin C
CC
McClain
Rajesh
R
Thapa
Vinh Q
VQ
Nguyen
Shyam S
SS
Bayya
R Joseph
RJ
Weiblen
Curtis R
CR
Menyuk
L Brandon
LB
Shaw
Jasbinder S
JS
Sanghera