Abstract
We present a convenient post-fabrication tuning method that uses photobleaching to adjust the center wavelength of the polymeric grating-assisted codirectional coupler filter. The passive polymer waveguide is used as a low-loss optical path and the electro-optic (EO) polymer waveguide is used for dropping the optical signal at a given wavelength. Photobleaching reduces the effective index of the EO polymer waveguide, which makes it possible to adjust the center wavelength. We can easily realize the filters with a desired center wavelength by exposing ultraviolet light on them with a proper energy even after finishing the device fabrication. The center wavelength is decreased by 25 nm with a photobleaching energy of 180 J/cm 2 without extra loss.
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.
