Tunable high-Q photonic-bandgap Fabry-Perot resonator

Jiu Hui Wu, Lay Kee Ang, Ai Qun Liu, Hwee Gee Teo, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)1770-1777
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Issue number8
Publication statusPublished - 1 Jan 2005
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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