Polarization-dependent narrowband spectral filtering by chiral sculptured thin films

Martin W. McCall, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We analyse theoretically transmission through two layers of different thin-film helicoidal bianisotropic mediums (TFHBMs), wherein the pitch of each layer bears a precisely determined relation to the overall thickness of the bi-layer. A spectral hole emerges from the interaction of the circular Bragg regimes of both TFHBM layers. Our results generalize a recently discovered scheme for producing spectral holes in fibre-Bragg gratings, with which comparison is made. The proposed TFHBM bi-layers may be useful for the simultaneous production of oppositely polarized beams with narrow bandwidths and a specific amplitude splitting ratio.

Original languageEnglish (US)
Pages (from-to)743-755
Number of pages13
JournalJournal of Modern Optics
Issue number4
StatePublished - Mar 2000

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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