Polarization-isolated electrical modulation of an etched long-period fiber grating with an outer liquid-crystal cladding

Yoonchan Jeong, Hak Rin Kim, Seungin Baek, Yonghyun Kim, Yong Wook Lee, Sin Doo Lee, Byoungho Lee

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

An etched long-period fiber grating with an outer liquid-crystal cladding capable of polarization-isolated electrical modulation, is described. A 5-dB transmission-dip modulation with 4-dB polarization isolation can be obtained at 225 V. The reduction in fiber diameter by a chemical etching process leads to an improvement in the long-range ordering of liquid-crystal molecules and a reduction in the controlling voltage. In addition, the experimental results are supported by numerical Simulation.

Original languageEnglish
Pages (from-to)964-968
Number of pages5
JournalOptical Engineering
Volume42
Issue number4
DOIs
StatePublished - Apr 2003

Keywords

  • Electro-optics
  • Fiber characteristics
  • Fiber optics
  • Filters
  • Gratings
  • Liquid crystals

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