Broadband single-polarization photonic crystal fiber.
We demonstrate a single-mode photonic crystal fiber that supports only one polarization state in a 220-nm-broad spectral region centered at 727 nm. The fiber has a mode-field diameter of 15.5 microm and background losses of < 15 dB/km in the single-polarization region. To our knowledge, these are the broadest bandwidth and the largest mode size yet reported for a single-polarization fiber.
Folkenberg
J R
JR
Crystal-Fibre A/S, Blokken 84, DK-3460 Birkerød, Denmark. jrf@crystal-fibre.com
Nielsen
M D
MD
Jakobsen
C
C