title: Two-dimensional guided mode resonance filters fabricated in a uniform low-index material system.
abstract: We demonstrate the fabrication, simulation, and experimental results of a buried, homogeneous narrowband spectral filter with a periodic, hexagonal unit cell of air pockets, encapsulated in a fused silica substrate. The leaky waveguide is formed by depositing SiO(x) on an etched fused silica grating via plasma-enhanced chemical vapor deposition. Design principles of guided mode resonance filters were utilized to achieve a resonance with 60% reflectivity at a wavelength of 1.741 μm. The device demonstrates resonance with FWHM of 6 nm.
authors.affiliation: Micro-Photonics Laboratory, Center for Optoelectronics and Optical Communications, 9201 University City Boulevard, University of North Carolina at Charlotte, Charlotte, North Carolina, 28223, USA.
authors.forename: Aaron J
authors.initials: AJ
authors.lastname: Pung
authors.forename: Menelaos K
authors.initials: MK
authors.lastname: Poutous
authors.forename: Raymond C
authors.initials: RC
authors.lastname: Rumpf
authors.forename: Zachary A
authors.initials: ZA
authors.lastname: Roth
authors.forename: Eric G
authors.initials: EG
authors.lastname: Johnson