All-Fiber Bandpass Filter Based on Helicoidal Long-Period Grating Pair and Null Core Hollow Optical Fiber With Flexible Transmission Control

W. Shin, B. A. Yu, Y. Lee, T. J. Eom, Y. C. Noh, D. K. Ko, J. Lee, K. Oh

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report an all-fiber bandpass filter (BPF) based on a null core hollow optical fiber serially concatenated between a pair of helicoidal long-period fiber gratings (HLPFGs) with flex-ible transmission control capability. With novel spectral function-ality of HLPFGs that can be varied by the torsional stress to the helix, and core mode blocking in a hollow core fiber, the proposed device showed unique BPF characteristics whose transmission can be flexible and altered along with a low polarization-dependent loss and low thermal variation, which have not observed in prior pho-torefractive grating devices.

Original languageEnglish
Pages (from-to)153-155
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20
Issue number2
DOIs
Publication statusPublished - 2008 Jan 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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