Abstract

We report a photonic crystal (PhC) sensor array consisting of six nanocavities which are side-coupled to a linear PhC waveguide. The design approach to cavities is based on rotating functional holes and changing their radius. Based on traditional linear waveguide, we also design a PhC waveguide with enhanced bandwidth by adjusting the holes on both sides of the central linear defect to weaken the Bragg reflector effect. With 3-D finite-difference time-domain (FDTD) method, the Q value and RI sensitivities for each sensor unit are adjusted from 3.67×105 to 5.41×106 and from 264 nm/RUI to 332 nm/RIU, respectively. Moreover, the free spectral range (FSR) values between every two adjacent sensing units are relatively larger enough compared with structures proposed previously. Accordingly, it provides the possibility to realize the integrated sensing and excellent sensing properties more effectively.

Full Text
Paper version not known

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 call

Disclaimer: 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.