Non-phase-matched tunable band rejection in an all-solid photonic bandgap fiber with high-index rods on graded-index pedestals

Woosung Ha, Yoonseob Jeong, Jiyoung Park, Kyunghwan Oh, Jens Kobelke, Kay Schuster, Anka Schwuchow

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A new type of an all-solid photonic bandgap fiber for a nonphase- matched tunable band-rejection filter was proposed and fabricated by introducing a hexagonal array of high-index rods surrounded by gradedindex pedestals in silica cladding. Due to the graded index and subsequent weak confinement of light, the proposed fiber showed two contrasting transmission spectra: flat transmission for a long fiber segment of ∼ 1 m in contrast to typical bandgap transmission in a short fiber segment of ∼ 10 cm. For the 120-cm-long fiber, we observed unique band-rejection transmission without any requirement of phase-matching conditions, whose rejection strength was tunable by mechanical perturbations such as bending and twisting. Detailed device principles, fiber design, fabrication, and transmission characteristics are discussed in both theory and experiment.

Original languageEnglish
Pages (from-to)19070-19075
Number of pages6
JournalOptics Express
Volume18
Issue number18
DOIs
Publication statusPublished - 2010 Aug 30

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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