Abstract
A new ultracompact optical gas sensor based on photonic crystal (PhC) nanobeam cavity coupled to tapered fiber is proposed. The nanobeam cavity adopted has seven pairs tapered air holes and ten pairs mirror holes, with Q factor of 2.2×106 when air refractive index (RI) equals 1, mode volume (V) of 0.29(λ/n)3, and the volume of 12×0.5×0.25 μm3. Finite-difference time-domain (FDTD) method is used to calculate the resonance wavelength of nanobeam under different RIs of gas. A change of RI leading to a linear change of resonance wavelength is proved (about 0.19 nm per 10-3 RI change).
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.
