TY - JOUR
T1 - Photonic integrated filter with widely tunable bandwidth
AU - Orlandi, Piero
AU - Morichetti, Francesco
AU - Strain, Michael John
AU - Sorel, Marc
AU - Bassi, Paolo
AU - Melloni, Andrea
PY - 2014/3/1
Y1 - 2014/3/1
N2 - We present a comprehensive design, fabrication, and characterization analysis of compact silicon-on-insulator bandpass filters with widely tunable bandwidth. The filter architecture is based on an unbalanced Mach-Zehnder interferometer loaded with a pair of ring resonators. A wide bandwidth tunability (from 10% to 90% FSR) can be achieved by controlling the resonant frequency of the rings while preserving a good filter off-band rejection. Design rules are provided that take into account fabrication tolerances as well as losses. Furthermore, the use of tunable couplers allows a more flexible shaping of the spectral response of the filter. The sensitivity with respect to nonlinear effects is carefully investigated. Operation over a wavelength spectrum of 20 nm is demonstrated, making the device suitable for channel subset selection in WDM systems, reconfigurable filters for gridless networking and adaptive filtering of signals.
AB - We present a comprehensive design, fabrication, and characterization analysis of compact silicon-on-insulator bandpass filters with widely tunable bandwidth. The filter architecture is based on an unbalanced Mach-Zehnder interferometer loaded with a pair of ring resonators. A wide bandwidth tunability (from 10% to 90% FSR) can be achieved by controlling the resonant frequency of the rings while preserving a good filter off-band rejection. Design rules are provided that take into account fabrication tolerances as well as losses. Furthermore, the use of tunable couplers allows a more flexible shaping of the spectral response of the filter. The sensitivity with respect to nonlinear effects is carefully investigated. Operation over a wavelength spectrum of 20 nm is demonstrated, making the device suitable for channel subset selection in WDM systems, reconfigurable filters for gridless networking and adaptive filtering of signals.
KW - bandpass filters
KW - integrated optics
KW - optical waveguide components
KW - silicon on insulator technology
UR - http://www.scopus.com/inward/record.url?scp=84893387782&partnerID=8YFLogxK
U2 - 10.1109/JLT.2013.2294345
DO - 10.1109/JLT.2013.2294345
M3 - Article
AN - SCOPUS:84893387782
SN - 0733-8724
VL - 32
SP - 897
EP - 907
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 5
ER -