Characterizing the effect of femtosecond photo-treatment on the center wavelength of fiber Bragg gratings

Aviran Halstuch, Amiel A. Ishaaya

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Various types of pre- and post-treatments to optical fibers are typically used to improve and/or change the properties of fiber Bragg grating (FBG). Here, we investigate experimentally the effects of NIR femtosecond (fs) laser pulses used for pre- and post-treatment on the refractive index of the fiber, and the resulting center wavelength shift of an fs inscribed FBG. We observe “red”-shift when applying a suitable pre-treatment, and both “blue”- and “red”-shifts when applying post-treatment. We characterize the photo-treatment parameters and compare to an FBG inscribed on a fresh fiber without any treatment. We also show that when the photo-treatment is saturated the result is a phase-shifted grating. Our results give further insight into the process of fs photo-treatments and quantify the effects in the case of fs FBG inscription.

Original languageEnglish
Pages (from-to)18990-18997
Number of pages8
JournalOptics Express
Volume26
Issue number15
DOIs
StatePublished - 23 Jul 2018

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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