Enhancing the tuning range of a single resonant band long period grating while maintaining the resonant peak depth by using an optimized high index indium tin oxide overlay

Jonathan Lee, Qin Chen, Qiming Zhang, Karl Reichard, Dave Ditto, John Mazurowski, Michael Hackert, Shizhuo Yin

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We report laboratory test results of a long period grating (LPG) that can maintain a constant resonant peak depth over an enhanced tuning range when it is coated with an indium tin oxide (ITO) electrode that has optimized thickness and refractive index. The authors have experimentally demonstrated a LPG coated with ITO that can be tuned in excess of 200 nm with an ambient refractive index change of less than 0.01. To the best of the authors' knowledge, this is the highest sensitivity reported for a LPG to date. In addition to the tuning performance, the resonant peak remains within 1 dB of its maximum depth for at least 100 nm of the tuning range.

Original languageEnglish (US)
Pages (from-to)6984-6989
Number of pages6
JournalApplied optics
Volume46
Issue number28
DOIs
StatePublished - Oct 1 2007

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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