Wavelength-selective filter based on a hollow optical waveguide

Hua Kung Chiu, Chung Hsing Chang, Chia Hung Hou, Chii Chang Chen, Chien Chieh Lee

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


In this paper, we describe a theoretical and experimental study of a wavelength-selective filter derived from hollow optical waveguides composed of Bragg reflectors with defect layers on a silicon substrate. The defect states of the transmission filter at wavelengths of 1519 and 1571 nm were realized using onedimensional photonic crystals (1D PCs) formed from a-Si and SiO2. The transmission spectra of the filter waveguides and the band structure of the defect 1D PCs were calculated using the two-dimensional finite-difference time-domain and transfer matrix methods, respectively. The device exhibited the narrow bandwidths of 0.5 and 1:1 nm for wavelengths of 1571 and 1519 nm, respectively.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalApplied Optics
Issue number2
StatePublished - 10 Jan 2011


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