Over 70nm wideband tuning of fiber Bragg gratings using a compressive bending technique

摘要

We demonstrate, for the first time, a silica-based fiber Bragg grating (FBG) with a wavelength tuning range over 70 nm, using compressive bending given by a simple tuning package. The wide tuning range of the device (from 1614 nm to 1544 nm), covers the entire L-band and a half of the C-band. Its polarization-mode dispersion (PMD) and polarization-dependent loss (PDL) remain low over the full operating regime.