Polarisation independent tunable WDM filter based on a waveguide Bragg reflector and an optical amplifier

摘要

The authors demonstrate a polarisation insensitive tunable reflective filter, with an integrated in-line optical amplifier providing a net fibre coupled gain for the device. The filter has a spectral width of 10 /spl Aring/ FWHM, with 1 /spl Aring/ deviation between the TE and TM input polarisations. The filter can be tuned over a spectral range of 95 /spl Aring/. Tunable filter-amplifier devices can be useful for low noise WDM receivers, and for channel selection in WDM networks.