Wide, tunable band rejection filter based on micro-optical waveguide on microactuating platform covering O, E, S, C, L, and U bands

Honggu Choi, Yoonseob Jeong, Kyunghwan Oh

Research output: Contribution to journalArticle

6 Citations (Scopus)


An ultrawide, tunable band rejection filter was experimentally demonstrated operating from 1060 to 1670 nm seamlessly covering all communication bands (O, E, S, C, L, and U bands). The device consists of a micro-optical waveguide made from fused taper fiber coupler mounted over a microactuating platform that systematically applies a highly localized torsional stress over the coupling region. High-band rejection efficiency of 20-30 dB and very low insertion loss of 0:2 dB were experimentally achieved over the whole operating spectral range.

Original languageEnglish
Pages (from-to)484-486
Number of pages3
JournalOptics Letters
Issue number4
Publication statusPublished - 2011 Feb 15


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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