Abstract
A compact thermally reconfigurable optical add/drop multiplexer (ROADM) is realized with 500 $\text {nm}\times 220$ nm silicon-on-insulator (SOI) strip waveguides. The demonstrated ROADM has eight channels with a channel spacing of 400 GHz and consists of two identical arrayed-waveguide gratings integrated with eight thermo-optic switches on the same chip. These thermo-optic switches have a broad bandwidth with low loss ( 20 dB) for covering all wavelength channels by utilizing point-symmetric Mach–Zehnder interferometers with bent directional couplers. The ROADM’s footprint is about $770~\mu \text {m}\times 880~\mu \text{m}$ only due to the ultra-strong confinement ability of SOI strip waveguides. The total on-chip loss of the fabricated ROADM is $\sim 15$ and $\sim 7$ dB for the transmitted signals and the added/dropped signals, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
