We report a theoretical analysis of a two-dimensional silicon photonic-bandgap (PBG) structure with ten layers of air-filled circular holes and an air-filled line defect, to function as a Fabry-Perot (FP) resonator. Using a multiple propagation series method, our calculations have shown a group of nine or ten resonant peaks of high-quality-factor Q (>2000) and of equal spacing (>80 nm) between two photonic bandgaps. The resonant peaks have large tunability in wavelength by varying the incident angle of light, which can be continuously tuned from 1.23 to 2.08/μm. The Q values of the resonant peaks increase linearly at small incidence and sharply at large incidence. For a lossy medium, the Q values may decrease significantly at large incidence angles, but resonant frequencies are relatively unchanged. The applications of the proposed PBG FP resonator for wavelength-division-multiplexed, optical communications are discussed.
|Number of pages||8|
|Journal||Journal of the Optical Society of America B: Optical Physics|
|Publication status||Published - 1 Jan 2005|
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics