Abstract
Si3N4 rib optical waveguides suitable for evanescent-wave photonic biosensors are analyzed to derive the conditions for single-mode propagation. A photonic biosensor structure at a wavelength of 0.63 µm based on two-mode interference is proposed, and the rib width, rib thickness and rib-core thickness for single-mode and two-mode waveguides (corresponding to sensing region) are proposed to be 3 µm, 2 nm, and 150 nm, and 3 µm, 2 nm, and 340 nm, respectively. The optical characteristics and propagation of each guided-wave mode are investigated utilizing the film-mode-matching and eigenmode-expansion methods.
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.
